- 最新动态
- 功能总览
- 服务公告
- 产品介绍
- 计费说明
- 快速入门
-
管理指南
- GaussDB(DWS)使用流程
- 准备工作
- 创建GaussDB(DWS)集群
- 连接GaussDB(DWS)集群
- 创建GaussDB(DWS)数据库和用户
- 迁移业务数据至GaussDB(DWS)集群
- GaussDB(DWS)集群数据安全与加密
- GaussDB(DWS)集群管理
-
GaussDB(DWS)集群运维
- 在监控面板(DMS)查看GaussDB(DWS)集群监控
- 在Cloud Eye查看GaussDB(DWS)集群监控
- 监控并诊断GaussDB(DWS)集群TopSQL
-
查看GaussDB(DWS)集群告警
- 告警管理简介
- 告警规则
- 订阅告警通知
-
告警处理
- DWS_2000000001 DWS集群节点CPU使用率超阈值
- DWS_2000000006 DWS集群节点数据盘使用率超阈值
- DWS_2000000009 DWS集群节点数据盘I/O利用率超阈值
- DWS_2000000012 DWS集群节点数据盘时延超阈值
- DWS_2000000016 DWS集群查询语句触发下盘量超阈值
- DWS_2000000017 DWS集群查询语句堆积数量超阈值
- DWS_2000000018 DWS集群默认资源池队列阻塞
- DWS_2000000020 DWS集群的SQL探针耗时超阈值
- DWS_2000000023 DWS集群中存在持有锁过长的vacuum full操作
- DWS_2000000027 DWS集群节点实例内存使用率超阈值
- DWS_2000000028 DWS集群节点动态内存使用率超阈值
- DWS_2000000029 DWS集群资源池磁盘使用率超阈值
- DWS_2000000030 DWS集群会话数量使用率超阈值
- DWS_2000000031 DWS集群活跃会话数量使用率超阈值
- DWS_2000000032 DWS集群数据库死锁数量超阈值
- DWS_2000000033 DWS集群数据库会话使用率超阈值
- 查看并订阅GaussDB(DWS)集群事件
- GaussDB(DWS)常用运维命令集
- 备份与恢复GaussDB(DWS)集群
- GaussDB(DWS)集群节点扩缩容
- GaussDB(DWS)集群规格变更
- GaussDB(DWS)集群容灾管理
- GaussDB(DWS)集群升级
- GaussDB(DWS)集群日志管理
- GaussDB(DWS)集群状态异常操作
- Vacuum回收GaussDB(DWS)空间
- 授权GaussDB(DWS)集群运维账号
-
最佳实践
- 导入导出
- 数据迁移
- 数据分析
- 存算分离
- 数据开发
- 数据库管理
- 性能调优
- 集群管理
- 数据迁移与同步
-
开发指南
-
标准数仓开发指南(9.1.0.x)
- 使用前必读
- GaussDB(DWS)开发设计建议
- 创建和管理GaussDB(DWS)数据库对象
- Oracle、Teradata和MySQL语法兼容性差异
- GaussDB(DWS)数据库安全管理
- 查询GaussDB(DWS)数据
- GaussDB(DWS)排序规则
- GaussDB(DWS)用户自定义函数
- GaussDB(DWS)存储过程
- 使用PostGIS Extension
- 使用JDBC或ODBC进行GaussDB(DWS)二次开发
- GaussDB(DWS)资源监控
- GaussDB(DWS)性能调优
-
GaussDB(DWS)系统表和系统视图
- 系统表和系统视图概述
-
系统表
- GS_BLOCKLIST_QUERY
- GS_BLOCKLIST_SQL
- GS_OBSSCANINFO
- GS_RESPOOL_RESOURCE_HISTORY
- GS_WLM_INSTANCE_HISTORY
- GS_WLM_OPERATOR_INFO
- GS_WLM_SESSION_INFO
- GS_WLM_USER_RESOURCE_HISTORY
- PG_AGGREGATE
- PG_AM
- PG_AMOP
- PG_AMPROC
- PG_ATTRDEF
- PG_ATTRIBUTE
- PG_AUTHID
- PG_AUTH_HISTORY
- PG_AUTH_MEMBERS
- PG_BLOCKLISTS
- PG_CAST
- PG_CLASS
- PG_COLLATION
- PG_CONSTRAINT
- PG_CONVERSION
- PG_DATABASE
- PG_DB_ROLE_SETTING
- PG_DEFAULT_ACL
- PG_DEPEND
- PG_DESCRIPTION
- PG_ENUM
- PG_EXCEPT_RULE
- PG_EXTERNAL_NAMESPACE
- PG_EXTENSION
- PG_EXTENSION_DATA_SOURCE
- PG_FINE_DR_INFO
- PG_FOREIGN_DATA_WRAPPER
- PG_FOREIGN_SERVER
- PG_FOREIGN_TABLE
- PG_INDEX
- PG_INHERITS
- PG_JOB_INFO
- PG_JOBS
- PG_LANGUAGE
- PG_LARGEOBJECT
- PG_LARGEOBJECT_METADATA
- PG_MATVIEW
- PG_NAMESPACE
- PG_OBJECT
- PG_OBSSCANINFO
- PG_OPCLASS
- PG_OPERATOR
- PG_OPFAMILY
- PG_PARTITION
- PG_PLTEMPLATE
- PG_PROC
- PG_PUBLICATION
- PG_PUBLICATION_NAMESPACE
- PG_PUBLICATION_REL
- PG_RANGE
- PG_REDACTION_COLUMN
- PG_REDACTION_POLICY
- PG_RELFILENODE_SIZE
- PG_RLSPOLICY
- PG_RESOURCE_POOL
- PG_REWRITE
- PG_SECLABEL
- PG_SHDEPEND
- PG_SHDESCRIPTION
- PG_SHSECLABEL
- PG_STATISTIC
- PG_STATISTIC_EXT
- PG_STAT_OBJECT
- PG_SUBSCRIPTION
- PG_SYNONYM
- PG_TABLESPACE
- PG_TRIGGER
- PG_TS_CONFIG
- PG_TS_CONFIG_MAP
- PG_TS_DICT
- PG_TS_PARSER
- PG_TS_TEMPLATE
- PG_TYPE
- PG_USER_MAPPING
- PG_USER_STATUS
- PG_WORKLOAD_ACTION
- PGXC_CLASS
- PGXC_GROUP
- PGXC_NODE
- PLAN_TABLE_DATA
- SNAPSHOT
- TABLES_SNAP_TIMESTAMP
- 性能视图快照系统表
-
系统视图
- ALL_ALL_TABLES
- ALL_CONSTRAINTS
- ALL_CONS_COLUMNS
- ALL_COL_COMMENTS
- ALL_DEPENDENCIES
- ALL_IND_COLUMNS
- ALL_IND_EXPRESSIONS
- ALL_INDEXES
- ALL_OBJECTS
- ALL_PROCEDURES
- ALL_SEQUENCES
- ALL_SOURCE
- ALL_SYNONYMS
- ALL_TAB_COLUMNS
- ALL_TAB_COMMENTS
- ALL_TABLES
- ALL_USERS
- ALL_VIEWS
- DBA_DATA_FILES
- DBA_USERS
- DBA_COL_COMMENTS
- DBA_CONSTRAINTS
- DBA_CONS_COLUMNS
- DBA_IND_COLUMNS
- DBA_IND_EXPRESSIONS
- DBA_IND_PARTITIONS
- DBA_INDEXES
- DBA_OBJECTS
- DBA_PART_INDEXES
- DBA_PART_TABLES
- DBA_PROCEDURES
- DBA_SEQUENCES
- DBA_SOURCE
- DBA_SYNONYMS
- DBA_TAB_COLUMNS
- DBA_TAB_COMMENTS
- DBA_TAB_PARTITIONS
- DBA_TABLES
- DBA_TABLESPACES
- DBA_TRIGGERS
- DBA_VIEWS
- DUAL
- GET_ALL_TSC_INFO
- GET_TSC_INFO
- GLOBAL_COLUMN_TABLE_IO_STAT
- GLOBAL_REDO_STAT
- GLOBAL_REL_IOSTAT
- GLOBAL_ROW_TABLE_IO_STAT
- GLOBAL_STAT_DATABASE
- GLOBAL_TABLE_CHANGE_STAT
- GLOBAL_TABLE_STAT
- GLOBAL_WORKLOAD_SQL_COUNT
- GLOBAL_WORKLOAD_SQL_ELAPSE_TIME
- GLOBAL_WORKLOAD_TRANSACTION
- GS_ALL_CONTROL_GROUP_INFO
- GS_BLOCKLIST_QUERY
- GS_BLOCKLIST_SQL
- GS_CLUSTER_RESOURCE_INFO
- GS_COLUMN_TABLE_IO_STAT
- GS_OBS_READ_TRAFFIC
- GS_OBS_WRITE_TRAFFIC
- GS_INSTR_UNIQUE_SQL
- GS_NODE_STAT_RESET_TIME
- GS_OBS_LATENCY
- GS_QUERY_MONITOR
- GS_QUERY_RESOURCE_INFO
- GS_REL_IOSTAT
- GS_RESPOOL_RUNTIME_INFO
- GS_RESPOOL_RESOURCE_INFO
- GS_RESPOOL_MONITOR
- GS_ROW_TABLE_IO_STAT
- GS_SESSION_CPU_STATISTICS
- GS_SESSION_MEMORY_STATISTICS
- GS_SQL_COUNT
- GS_STAT_DB_CU
- GS_STAT_SESSION_CU
- GS_TABLE_CHANGE_STAT
- GS_TABLE_STAT
- GS_TOTAL_NODEGROUP_MEMORY_DETAIL
- GS_USER_MONITOR
- GS_USER_TRANSACTION
- GS_VIEW_DEPENDENCY
- GS_VIEW_DEPENDENCY_PATH
- GS_VIEW_INVALID
- GS_WAIT_EVENTS
- GS_WLM_OPERATOR_INFO
- GS_WLM_OPERATOR_HISTORY
- GS_WLM_OPERATOR_STATISTICS
- GS_WLM_SESSION_INFO
- GS_WLM_SESSION_HISTORY
- GS_WLM_SESSION_STATISTICS
- GS_WLM_SQL_ALLOW
- GS_WORKLOAD_SQL_COUNT
- GS_WORKLOAD_SQL_ELAPSE_TIME
- GS_WORKLOAD_TRANSACTION
- MPP_TABLES
- PG_AVAILABLE_EXTENSION_VERSIONS
- PG_AVAILABLE_EXTENSIONS
- PG_BULKLOAD_STATISTICS
- PG_COMM_CLIENT_INFO
- PG_COMM_DELAY
- PG_COMM_STATUS
- PG_COMM_RECV_STREAM
- PG_COMM_SEND_STREAM
- PG_COMM_QUERY_SPEED
- PG_CONTROL_GROUP_CONFIG
- PG_CURSORS
- PG_EXT_STATS
- PG_GET_INVALID_BACKENDS
- PG_GET_SENDERS_CATCHUP_TIME
- PG_GLOBAL_TEMP_ATTACHED_PIDS
- PG_GROUP
- PG_INDEXES
- PG_JOB
- PG_JOB_PROC
- PG_JOB_SINGLE
- PG_LIFECYCLE_DATA_DISTRIBUTE
- PG_LOCKS
- PG_LWLOCKS
- PG_NODE_ENV
- PG_OS_THREADS
- PG_POOLER_STATUS
- PG_PREPARED_STATEMENTS
- PG_PREPARED_XACTS
- PG_PUBLICATION_TABLES
- PG_QUERYBAND_ACTION
- PG_REPLICATION_SLOTS
- PG_ROLES
- PG_RULES
- PG_RUNNING_XACTS
- PG_SECLABELS
- PG_SEQUENCES
- PG_SESSION_WLMSTAT
- PG_SESSION_IOSTAT
- PG_SETTINGS
- PG_SHADOW
- PG_SHARED_MEMORY_DETAIL
- PG_STATS
- PG_STAT_ACTIVITY
- PG_STAT_ALL_INDEXES
- PG_STAT_ALL_TABLES
- PG_STAT_BAD_BLOCK
- PG_STAT_BGWRITER
- PG_STAT_DATABASE
- PG_STAT_DATABASE_CONFLICTS
- PG_STAT_GET_MEM_MBYTES_RESERVED
- PG_STAT_USER_FUNCTIONS
- PG_STAT_USER_INDEXES
- PG_STAT_USER_TABLES
- PG_STAT_REPLICATION
- PG_STAT_SYS_INDEXES
- PG_STAT_SYS_TABLES
- PG_STAT_XACT_ALL_TABLES
- PG_STAT_XACT_SYS_TABLES
- PG_STAT_XACT_USER_FUNCTIONS
- PG_STAT_XACT_USER_TABLES
- PG_STATIO_ALL_INDEXES
- PG_STATIO_ALL_SEQUENCES
- PG_STATIO_ALL_TABLES
- PG_STATIO_SYS_INDEXES
- PG_STATIO_SYS_SEQUENCES
- PG_STATIO_SYS_TABLES
- PG_STATIO_USER_INDEXES
- PG_STATIO_USER_SEQUENCES
- PG_STATIO_USER_TABLES
- PG_THREAD_WAIT_STATUS
- PG_TABLES
- PG_TDE_INFO
- PG_TIMEZONE_ABBREVS
- PG_TIMEZONE_NAMES
- PG_TOTAL_MEMORY_DETAIL
- PG_TOTAL_SCHEMA_INFO
- PG_TOTAL_USER_RESOURCE_INFO
- PG_USER
- PG_USER_MAPPINGS
- PG_VIEWS
- PG_WLM_STATISTICS
- PGXC_AIO_RESOURCE_POOL_STATS
- PGXC_BULKLOAD_PROGRESS
- PGXC_BULKLOAD_INFO
- PGXC_BULKLOAD_STATISTICS
- PGXC_COLUMN_TABLE_IO_STAT
- PGXC_COMM_CLIENT_INFO
- PGXC_COMM_DELAY
- PGXC_COMM_RECV_STREAM
- PGXC_COMM_SEND_STREAM
- PGXC_COMM_STATUS
- PGXC_COMM_QUERY_SPEED
- PGXC_DEADLOCK
- PGXC_DISK_CACHE_STATS
- PGXC_DISK_CACHE_ALL_STATS
- PGXC_DISK_CACHE_PATH_INFO
- PGXC_GET_STAT_ALL_TABLES
- PGXC_GET_STAT_ALL_PARTITIONS
- PGXC_GET_TABLE_SKEWNESS
- PGXC_GLOBAL_TEMP_ATTACHED_PIDS
- PGXC_GTM_SNAPSHOT_STATUS
- PGXC_INSTANCE_TIME
- PGXC_LOCKWAIT_DETAIL
- PGXC_INSTR_UNIQUE_SQL
- PGXC_LOCK_CONFLICTS
- PGXC_LWLOCKS
- PGXC_MEMORY_DEBUG_INFO
- PGXC_NODE_ENV
- PGXC_NODE_STAT_RESET_TIME
- PGXC_OBS_IO_SCHEDULER_STATS
- PGXC_OBS_IO_SCHEDULER_PERIODIC_STATS
- PGXC_OS_RUN_INFO
- PGXC_OS_THREADS
- PGXC_POOLER_STATUS
- PGXC_PREPARED_XACTS
- PGXC_REDO_STAT
- PGXC_REL_IOSTAT
- PGXC_REPLICATION_SLOTS
- PGXC_RESPOOL_RUNTIME_INFO
- PGXC_RESPOOL_RESOURCE_INFO
- PGXC_RESPOOL_RESOURCE_HISTORY
- PGXC_ROW_TABLE_IO_STAT
- PGXC_RUNNING_XACTS
- PGXC_SETTINGS
- PGXC_SESSION_WLMSTAT
- PGXC_STAT_ACTIVITY
- PGXC_STAT_BAD_BLOCK
- PGXC_STAT_BGWRITER
- PGXC_STAT_DATABASE
- PGXC_STAT_OBJECT
- PGXC_STAT_REPLICATION
- PGXC_STAT_TABLE_DIRTY
- PGXC_STAT_WAL
- PGXC_SQL_COUNT
- PGXC_TABLE_CHANGE_STAT
- PGXC_TABLE_STAT
- PGXC_THREAD_WAIT_STATUS
- PGXC_TOTAL_MEMORY_DETAIL
- PGXC_TOTAL_SCHEMA_INFO
- PGXC_TOTAL_SCHEMA_INFO_ANALYZE
- PGXC_TOTAL_USER_RESOURCE_INFO
- PGXC_USER_TRANSACTION
- PGXC_VARIABLE_INFO
- PGXC_WAIT_DETAIL
- PGXC_WAIT_EVENTS
- PGXC_WLM_OPERATOR_HISTORY
- PGXC_WLM_OPERATOR_INFO
- PGXC_WLM_OPERATOR_STATISTICS
- PGXC_WLM_SESSION_INFO
- PGXC_WLM_SESSION_HISTORY
- PGXC_WLM_SESSION_STATISTICS
- PGXC_WLM_TABLE_DISTRIBUTION_SKEWNESS
- PGXC_WLM_USER_RESOURCE_HISTORY
- PGXC_WLM_WORKLOAD_RECORDS
- PGXC_WORKLOAD_SQL_COUNT
- PGXC_WORKLOAD_SQL_ELAPSE_TIME
- PGXC_WORKLOAD_TRANSACTION
- PLAN_TABLE
- PV_FILE_STAT
- PV_INSTANCE_TIME
- PV_MATVIEW_DETAIL
- PV_OS_RUN_INFO
- PV_SESSION_MEMORY
- PV_SESSION_MEMORY_DETAIL
- PV_SESSION_STAT
- PV_SESSION_TIME
- PV_TOTAL_MEMORY_DETAIL
- PV_REDO_STAT
- PV_RUNTIME_ATTSTATS
- PV_RUNTIME_RELSTATS
- REDACTION_COLUMNS
- REDACTION_POLICIES
- REMOTE_TABLE_STAT
- SHOW_TSC_INFO
- SHOW_ALL_TSC_INFO
- USER_COL_COMMENTS
- USER_CONSTRAINTS
- USER_CONS_COLUMNS
- USER_INDEXES
- USER_IND_COLUMNS
- USER_IND_EXPRESSIONS
- USER_IND_PARTITIONS
- USER_JOBS
- USER_OBJECTS
- USER_PART_INDEXES
- USER_PART_TABLES
- USER_PROCEDURES
- USER_SEQUENCES
- USER_SOURCE
- USER_SYNONYMS
- USER_TAB_COLUMNS
- USER_TAB_COMMENTS
- USER_TAB_PARTITIONS
- USER_TABLES
- USER_TRIGGERS
- USER_VIEWS
- V$SESSION
- V$SESSION_LONGOPS
- GaussDB(DWS)数据库GUC参数
- GaussDB(DWS)开发者术语表
-
标准数仓开发指南(8.1.3.x)
- 使用前必读
- GaussDB(DWS)开发设计规范
- 创建和管理GaussDB(DWS)数据库对象
- Oracle、Teradata和MySQL语法兼容性差异
- GaussDB(DWS)数据库安全管理
- 查询GaussDB(DWS)数据
- GaussDB(DWS)排序规则
- GaussDB(DWS)用户自定义函数
- GaussDB(DWS)存储过程
- 使用PostGIS Extension
- 使用JDBC或ODBC进行GaussDB(DWS)二次开发
- GaussDB(DWS)资源监控
- GaussDB(DWS)性能调优
-
GaussDB(DWS)系统表和系统视图
- 系统表和系统视图概述
-
系统表
- GS_OBSSCANINFO
- GS_RESPOOL_RESOURCE_HISTORY
- GS_WLM_INSTANCE_HISTORY
- GS_WLM_OPERATOR_INFO
- GS_WLM_SESSION_INFO
- GS_WLM_USER_RESOURCE_HISTORY
- PG_AGGREGATE
- PG_AM
- PG_AMOP
- PG_AMPROC
- PG_ATTRDEF
- PG_ATTRIBUTE
- PG_AUTHID
- PG_AUTH_HISTORY
- PG_AUTH_MEMBERS
- PG_CAST
- PG_CLASS
- PG_COLLATION
- PG_CONSTRAINT
- PG_CONVERSION
- PG_DATABASE
- PG_DB_ROLE_SETTING
- PG_DEFAULT_ACL
- PG_DEPEND
- PG_DESCRIPTION
- PG_ENUM
- PG_EXTENSION
- PG_EXTENSION_DATA_SOURCE
- PG_FOREIGN_DATA_WRAPPER
- PG_FOREIGN_SERVER
- PG_FOREIGN_TABLE
- PG_INDEX
- PG_INHERITS
- PG_JOBS
- PG_LANGUAGE
- PG_LARGEOBJECT
- PG_LARGEOBJECT_METADATA
- PG_NAMESPACE
- PG_OBJECT
- PG_OBSSCANINFO
- PG_OPCLASS
- PG_OPERATOR
- PG_OPFAMILY
- PG_PARTITION
- PG_PLTEMPLATE
- PG_PROC
- PG_RANGE
- PG_REDACTION_COLUMN
- PG_REDACTION_POLICY
- PG_RELFILENODE_SIZE
- PG_RLSPOLICY
- PG_RESOURCE_POOL
- PG_REWRITE
- PG_SECLABEL
- PG_SHDEPEND
- PG_SHDESCRIPTION
- PG_SHSECLABEL
- PG_STATISTIC
- PG_STATISTIC_EXT
- PG_SYNONYM
- PG_TABLESPACE
- PG_TRIGGER
- PG_TS_CONFIG
- PG_TS_CONFIG_MAP
- PG_TS_DICT
- PG_TS_PARSER
- PG_TS_TEMPLATE
- PG_TYPE
- PG_USER_MAPPING
- PG_USER_STATUS
- PG_WORKLOAD_ACTION
- PGXC_CLASS
- PGXC_GROUP
- PGXC_NODE
- PLAN_TABLE_DATA
- SNAPSHOT
- TABLES_SNAP_TIMESTAMP
- 性能视图快照系统表
-
系统视图
- ALL_ALL_TABLES
- ALL_CONSTRAINTS
- ALL_CONS_COLUMNS
- ALL_COL_COMMENTS
- ALL_DEPENDENCIES
- ALL_IND_COLUMNS
- ALL_IND_EXPRESSIONS
- ALL_INDEXES
- ALL_OBJECTS
- ALL_PROCEDURES
- ALL_SEQUENCES
- ALL_SOURCE
- ALL_SYNONYMS
- ALL_TAB_COLUMNS
- ALL_TAB_COMMENTS
- ALL_TABLES
- ALL_USERS
- ALL_VIEWS
- DBA_DATA_FILES
- DBA_USERS
- DBA_COL_COMMENTS
- DBA_CONSTRAINTS
- DBA_CONS_COLUMNS
- DBA_IND_COLUMNS
- DBA_IND_EXPRESSIONS
- DBA_IND_PARTITIONS
- DBA_INDEXES
- DBA_OBJECTS
- DBA_PART_INDEXES
- DBA_PART_TABLES
- DBA_PROCEDURES
- DBA_SEQUENCES
- DBA_SOURCE
- DBA_SYNONYMS
- DBA_TAB_COLUMNS
- DBA_TAB_COMMENTS
- DBA_TAB_PARTITIONS
- DBA_TABLES
- DBA_TABLESPACES
- DBA_TRIGGERS
- DBA_VIEWS
- DUAL
- GLOBAL_COLUMN_TABLE_IO_STAT
- GLOBAL_REDO_STAT
- GLOBAL_REL_IOSTAT
- GLOBAL_ROW_TABLE_IO_STAT
- GLOBAL_STAT_DATABASE
- GLOBAL_TABLE_CHANGE_STAT
- GLOBAL_TABLE_STAT
- GLOBAL_WORKLOAD_SQL_COUNT
- GLOBAL_WORKLOAD_SQL_ELAPSE_TIME
- GLOBAL_WORKLOAD_TRANSACTION
- GS_ALL_CONTROL_GROUP_INFO
- GS_CLUSTER_RESOURCE_INFO
- GS_COLUMN_TABLE_IO_STAT
- GS_INSTR_UNIQUE_SQL
- GS_NODE_STAT_RESET_TIME
- GS_REL_IOSTAT
- GS_RESPOOL_RUNTIME_INFO
- GS_RESPOOL_RESOURCE_INFO
- GS_ROW_TABLE_IO_STAT
- GS_SESSION_CPU_STATISTICS
- GS_SESSION_MEMORY_STATISTICS
- GS_SQL_COUNT
- GS_STAT_DB_CU
- GS_STAT_SESSION_CU
- GS_TABLE_CHANGE_STAT
- GS_TABLE_STAT
- GS_TOTAL_NODEGROUP_MEMORY_DETAIL
- GS_USER_TRANSACTION
- GS_VIEW_DEPENDENCY
- GS_VIEW_DEPENDENCY_PATH
- GS_VIEW_INVALID
- GS_WAIT_EVENTS
- GS_WLM_OPERATOR_INFO
- GS_WLM_OPERATOR_HISTORY
- GS_WLM_OPERATOR_STATISTICS
- GS_WLM_SESSION_INFO
- GS_WLM_SESSION_HISTORY
- GS_WLM_SESSION_STATISTICS
- GS_WLM_SQL_ALLOW
- GS_WORKLOAD_SQL_COUNT
- GS_WORKLOAD_SQL_ELAPSE_TIME
- GS_WORKLOAD_TRANSACTION
- MPP_TABLES
- PG_AVAILABLE_EXTENSION_VERSIONS
- PG_AVAILABLE_EXTENSIONS
- PG_BULKLOAD_STATISTICS
- PG_COMM_CLIENT_INFO
- PG_COMM_DELAY
- PG_COMM_STATUS
- PG_COMM_RECV_STREAM
- PG_COMM_SEND_STREAM
- PG_COMM_QUERY_SPEED
- PG_CONTROL_GROUP_CONFIG
- PG_CURSORS
- PG_EXT_STATS
- PG_GET_INVALID_BACKENDS
- PG_GET_SENDERS_CATCHUP_TIME
- PG_GROUP
- PG_INDEXES
- PG_JOB
- PG_JOB_PROC
- PG_JOB_SINGLE
- PG_LIFECYCLE_DATA_DISTRIBUTE
- PG_LOCKS
- PG_NODE_ENV
- PG_OS_THREADS
- PG_POOLER_STATUS
- PG_PREPARED_STATEMENTS
- PG_PREPARED_XACTS
- PG_QUERYBAND_ACTION
- PG_REPLICATION_SLOTS
- PG_ROLES
- PG_RULES
- PG_RUNNING_XACTS
- PG_SECLABELS
- PG_SESSION_WLMSTAT
- PG_SESSION_IOSTAT
- PG_SETTINGS
- PG_SHADOW
- PG_SHARED_MEMORY_DETAIL
- PG_STATS
- PG_STAT_ACTIVITY
- PG_STAT_ALL_INDEXES
- PG_STAT_ALL_TABLES
- PG_STAT_BAD_BLOCK
- PG_STAT_BGWRITER
- PG_STAT_DATABASE
- PG_STAT_DATABASE_CONFLICTS
- PG_STAT_GET_MEM_MBYTES_RESERVED
- PG_STAT_USER_FUNCTIONS
- PG_STAT_USER_INDEXES
- PG_STAT_USER_TABLES
- PG_STAT_REPLICATION
- PG_STAT_SYS_INDEXES
- PG_STAT_SYS_TABLES
- PG_STAT_XACT_ALL_TABLES
- PG_STAT_XACT_SYS_TABLES
- PG_STAT_XACT_USER_FUNCTIONS
- PG_STAT_XACT_USER_TABLES
- PG_STATIO_ALL_INDEXES
- PG_STATIO_ALL_SEQUENCES
- PG_STATIO_ALL_TABLES
- PG_STATIO_SYS_INDEXES
- PG_STATIO_SYS_SEQUENCES
- PG_STATIO_SYS_TABLES
- PG_STATIO_USER_INDEXES
- PG_STATIO_USER_SEQUENCES
- PG_STATIO_USER_TABLES
- PG_THREAD_WAIT_STATUS
- PG_TABLES
- PG_TDE_INFO
- PG_TIMEZONE_ABBREVS
- PG_TIMEZONE_NAMES
- PG_TOTAL_MEMORY_DETAIL
- PG_TOTAL_SCHEMA_INFO
- PG_TOTAL_USER_RESOURCE_INFO
- PG_USER
- PG_USER_MAPPINGS
- PG_VIEWS
- PG_WLM_STATISTICS
- PGXC_BULKLOAD_PROGRESS
- PGXC_BULKLOAD_STATISTICS
- PGXC_COLUMN_TABLE_IO_STAT
- PGXC_COMM_CLIENT_INFO
- PGXC_COMM_DELAY
- PGXC_COMM_RECV_STREAM
- PGXC_COMM_SEND_STREAM
- PGXC_COMM_STATUS
- PGXC_COMM_QUERY_SPEED
- PGXC_DEADLOCK
- PGXC_GET_STAT_ALL_TABLES
- PGXC_GET_STAT_ALL_PARTITIONS
- PGXC_GET_TABLE_SKEWNESS
- PGXC_GTM_SNAPSHOT_STATUS
- PGXC_INSTANCE_TIME
- PGXC_LOCKWAIT_DETAIL
- PGXC_INSTR_UNIQUE_SQL
- PGXC_LOCK_CONFLICTS
- PGXC_NODE_ENV
- PGXC_NODE_STAT_RESET_TIME
- PGXC_OS_RUN_INFO
- PGXC_OS_THREADS
- PGXC_PREPARED_XACTS
- PGXC_REDO_STAT
- PGXC_REL_IOSTAT
- PGXC_REPLICATION_SLOTS
- PGXC_RESPOOL_RUNTIME_INFO
- PGXC_RESPOOL_RESOURCE_INFO
- PGXC_RESPOOL_RESOURCE_HISTORY
- PGXC_ROW_TABLE_IO_STAT
- PGXC_RUNNING_XACTS
- PGXC_SETTINGS
- PGXC_SESSION_WLMSTAT
- PGXC_STAT_ACTIVITY
- PGXC_STAT_BAD_BLOCK
- PGXC_STAT_BGWRITER
- PGXC_STAT_DATABASE
- PGXC_STAT_REPLICATION
- PGXC_STAT_TABLE_DIRTY
- PGXC_SQL_COUNT
- PGXC_TABLE_CHANGE_STAT
- PGXC_TABLE_STAT
- PGXC_THREAD_WAIT_STATUS
- PGXC_TOTAL_MEMORY_DETAIL
- PGXC_TOTAL_SCHEMA_INFO
- PGXC_TOTAL_SCHEMA_INFO_ANALYZE
- PGXC_USER_TRANSACTION
- PGXC_VARIABLE_INFO
- PGXC_WAIT_DETAIL
- PGXC_WAIT_EVENTS
- PGXC_WLM_OPERATOR_HISTORY
- PGXC_WLM_OPERATOR_INFO
- PGXC_WLM_OPERATOR_STATISTICS
- PGXC_WLM_SESSION_INFO
- PGXC_WLM_SESSION_HISTORY
- PGXC_WLM_SESSION_STATISTICS
- PGXC_WLM_WORKLOAD_RECORDS
- PGXC_WORKLOAD_SQL_COUNT
- PGXC_WORKLOAD_SQL_ELAPSE_TIME
- PGXC_WORKLOAD_TRANSACTION
- PLAN_TABLE
- PV_FILE_STAT
- PV_INSTANCE_TIME
- PV_OS_RUN_INFO
- PV_SESSION_MEMORY
- PV_SESSION_MEMORY_DETAIL
- PV_SESSION_STAT
- PV_SESSION_TIME
- PV_TOTAL_MEMORY_DETAIL
- PV_REDO_STAT
- REDACTION_COLUMNS
- REDACTION_POLICIES
- REMOTE_TABLE_STAT
- USER_COL_COMMENTS
- USER_CONSTRAINTS
- USER_CONS_COLUMNS
- USER_INDEXES
- USER_IND_COLUMNS
- USER_IND_EXPRESSIONS
- USER_IND_PARTITIONS
- USER_JOBS
- USER_OBJECTS
- USER_PART_INDEXES
- USER_PART_TABLES
- USER_PROCEDURES
- USER_SEQUENCES
- USER_SOURCE
- USER_SYNONYMS
- USER_TAB_COLUMNS
- USER_TAB_COMMENTS
- USER_TAB_PARTITIONS
- USER_TABLES
- USER_TRIGGERS
- USER_VIEWS
- V$SESSION
- V$SESSION_LONGOPS
- GaussDB(DWS)数据库GUC参数
- GaussDB(DWS)开发者术语表
- 实时数仓开发指南(9.1.0.x)
- 实时数仓开发指南(8.1.3.x)
- 历史版本
-
标准数仓开发指南(9.1.0.x)
-
SQL语法参考
-
SQL语法参考(9.1.0.x)
- GaussDB(DWS) SQL概述
- 与PostgreSQL的差异
- 关键字
- 数据类型
- 常量与宏
-
函数和操作符
- 字符处理函数和操作符
- 二进制字符串函数和操作符
- 位串函数和操作符
- 数字操作函数和操作符
- 时间、日期处理函数和操作符
- SEQUENCE函数
- 数组函数和操作符
- 逻辑操作符
- 比较操作符
- 模式匹配操作符
- 聚集函数
- 窗口函数
- 类型转换函数
- JSON/JSONB函数和操作符
- 安全函数
- 条件表达式函数
- 范围函数和操作符
- 数据脱敏函数
- 位图函数和操作符
- UUID函数
- 文本检索函数和操作符
- HLL函数和操作符
- 返回集合的函数
- 几何函数和操作符
- 网络地址函数和操作符
- 系统信息函数
- 系统管理函数
- 备份恢复控制函数
- 数据库对象函数
- 残留文件管理函数
- 统计信息函数
- 触发器函数
- XML函数
- 调用栈记录函数
- Hudi系统函数
- 漏斗函数和留存函数
- EXTERNAL SCHEMA系统函数
- 存算分离函数
- 表达式
- 类型转换
- 全文检索
- 系统操作
- 事务管理
-
DDL语法
- DDL语法一览表
- ALTER BLOCK RULE
- ALTER DATABASE
- ALTER EXCEPT RULE
- ALTER EXTERNAL SCHEMA
- ALTER FOREIGN TABLE (GDS导入导出)
- ALTER FOREIGN TABLE (For HDFS or OBS)
- ALTER FUNCTION
- ALTER GROUP
- ALTER INDEX
- ALTER LARGE OBJECT
- ALTER MATERIALIZED VIEW
- ALTER PUBLICATION
- ALTER REDACTION POLICY
- ALTER RESOURCE POOL
- ALTER ROLE
- ALTER SUBSCRIPTION
- ALTER ROW LEVEL SECURITY POLICY
- ALTER SCHEMA
- ALTER SEQUENCE
- ALTER SERVER
- ALTER SESSION
- ALTER SYNONYM
- ALTER SYSTEM KILL SESSION
- ALTER TABLE
- ALTER TABLE PARTITION
- ALTER TEXT SEARCH CONFIGURATION
- ALTER TEXT SEARCH DICTIONARY
- ALTER TRIGGER
- ALTER TYPE
- ALTER USER
- ALTER VIEW
- CLEAN CONNECTION
- CLOSE
- CLUSTER
- COMMENT
- CREATE BARRIER
- CREATE BLOCK RULE
- CREATE DATABASE
- CREATE EXCEPT RULE
- CREATE EXTERNAL SCHEMA
- CREATE FOREIGN TABLE (GDS导入导出)
- CREATE FOREIGN TABLE (SQL on OBS or Hadoop)
- CREATE FOREIGN TABLE (OBS导入导出)
- CREATE FUNCTION
- CREATE GROUP
- CREATE INDEX
- CREATE MATERIALIZED VIEW
- CREATE PROCEDURE
- CREATE PUBLICATION
- CREATE REDACTION POLICY
- CREATE ROW LEVEL SECURITY POLICY
- CREATE RESOURCE POOL
- CREATE ROLE
- CREATE SCHEMA
- CREATE SEQUENCE
- CREATE SERVER
- CREATE SUBSCRIPTION
- CREATE SYNONYM
- CREATE TABLE
- CREATE TABLE AS
- CREATE TABLE PARTITION
- CREATE TEXT SEARCH CONFIGURATION
- CREATE TEXT SEARCH DICTIONARY
- CREATE TRIGGER
- CREATE TYPE
- CREATE USER
- CREATE VIEW
- CURSOR
- DISCARD
- DROP BLOCK RULE
- DROP DATABASE
- DROP EXCEPT RULE
- DROP FOREIGN TABLE
- DROP FUNCTION
- DROP GROUP
- DROP INDEX
- DROP MATERIALIZED VIEW
- DROP OWNED
- DROP PUBLICATION
- DROP REDACTION POLICY
- DROP ROW LEVEL SECURITY POLICY
- DROP PROCEDURE
- DROP RESOURCE POOL
- DROP ROLE
- DROP SCHEMA
- DROP SEQUENCE
- DROP SERVER
- DROP SUBSCRIPTION
- DROP SYNONYM
- DROP TABLE
- DROP TEXT SEARCH CONFIGURATION
- DROP TEXT SEARCH DICTIONARY
- DROP TRIGGER
- DROP TYPE
- DROP USER
- DROP VIEW
- FETCH
- MOVE
- REFRESH MATERIALIZED VIEW
- REINDEX
- RENAME TABLE
- RESET
- SET
- SET CONSTRAINTS
- SET ROLE
- SET SESSION AUTHORIZATION
- SHOW
- TRUNCATE
- VACUUM
- DML语法
- DCL语法
- DQL语法
- TCL语法
-
SQL语法参考(8.1.3.x)
- GaussDB(DWS) SQL概述
- 与PostgreSQL的差异
- 关键字
- 数据类型
- 常量与宏
- 函数和操作符
- 表达式
- 类型转换
- 全文检索
- 系统操作
- 事务管理
-
DDL语法
- DDL语法一览表
- ALTER DATABASE
- ALTER FOREIGN TABLE (GDS导入导出)
- ALTER FOREIGN TABLE (For HDFS or OBS)
- ALTER FUNCTION
- ALTER GROUP
- ALTER INDEX
- ALTER LARGE OBJECT
- ALTER REDACTION POLICY
- ALTER RESOURCE POOL
- ALTER ROLE
- ALTER ROW LEVEL SECURITY POLICY
- ALTER SCHEMA
- ALTER SEQUENCE
- ALTER SERVER
- ALTER SESSION
- ALTER SYNONYM
- ALTER SYSTEM KILL SESSION
- ALTER TABLE
- ALTER TABLE PARTITION
- ALTER TEXT SEARCH CONFIGURATION
- ALTER TEXT SEARCH DICTIONARY
- ALTER TRIGGER
- ALTER TYPE
- ALTER USER
- ALTER VIEW
- CLEAN CONNECTION
- CLOSE
- CLUSTER
- COMMENT
- CREATE BARRIER
- CREATE DATABASE
- CREATE FOREIGN TABLE (GDS导入导出)
- CREATE FOREIGN TABLE (SQL on OBS or Hadoop)
- CREATE FOREIGN TABLE (OBS导入导出)
- CREATE FUNCTION
- CREATE GROUP
- CREATE INDEX
- CREATE REDACTION POLICY
- CREATE ROW LEVEL SECURITY POLICY
- CREATE PROCEDURE
- CREATE RESOURCE POOL
- CREATE ROLE
- CREATE SCHEMA
- CREATE SEQUENCE
- CREATE SERVER
- CREATE SYNONYM
- CREATE TABLE
- CREATE TABLE AS
- CREATE TABLE PARTITION
- CREATE TEXT SEARCH CONFIGURATION
- CREATE TEXT SEARCH DICTIONARY
- CREATE TRIGGER
- CREATE TYPE
- CREATE USER
- CREATE VIEW
- CURSOR
- DROP DATABASE
- DROP FOREIGN TABLE
- DROP FUNCTION
- DROP GROUP
- DROP INDEX
- DROP OWNED
- DROP REDACTION POLICY
- DROP ROW LEVEL SECURITY POLICY
- DROP PROCEDURE
- DROP RESOURCE POOL
- DROP ROLE
- DROP SCHEMA
- DROP SEQUENCE
- DROP SERVER
- DROP SYNONYM
- DROP TABLE
- DROP TEXT SEARCH CONFIGURATION
- DROP TEXT SEARCH DICTIONARY
- DROP TRIGGER
- DROP TYPE
- DROP USER
- DROP VIEW
- FETCH
- MOVE
- REINDEX
- RENAME TABLE
- RESET
- SET
- SET CONSTRAINTS
- SET ROLE
- SET SESSION AUTHORIZATION
- SHOW
- TRUNCATE
- VACUUM
- DML语法
- DCL语法
- DQL语法
- TCL语法
- 历史版本
-
SQL语法参考(9.1.0.x)
- 性能调优
-
工具指南
- 工具简介
- 工具下载
- gsql
- Data Studio
- GDS
-
DSC
- 前言
- DSC简介
- 使用DSC
- Teradata语法迁移
-
MySQL语法迁移
- 支持的关键词和特性
- 数据类型
- 函数和表达式
-
表(可选参数、操作)
- ALGORITHM
- ALTER TABLE RENAME
- AUTO_INCREMENT
- AVG_ROW_LENGTH
- BLOCK_SIZE
- CHARSET
- CHECKSUM
- CLUSTERED KEY
- COLLATE
- COMMENT
- CONNECTION
- DEFAULT
- DELAY_KEY_WRITE
- DISTRIBUTE BY
- DIRECTORY
- ENGINE
- FOREIGN_KEY_CHECKS
- IF NOT EXISTS
- INDEX_ALL
- INSERT_METHOD
- KEY_BLOCK_SIZE
- LOCK
- MAX_ROWS
- MIN_ROWS
- PACK_KEYS
- PARTITION BY
- PASSWORD
- ROW_FORMAT
- STATS_AUTO_RECALC
- STATS_PERSISTENT
- STATS_SAMPLE_PAGES
- UNION
- WITH AS
- CHANGE修改列
- CHECK约束
- DROP删除表
- LIKE 表克隆
- MODIFY修改列
- TRUNCATE 删除表
- ROUNDROBIN表
- RENAME 重命名表名
- 设置与清除列默认值
- 字段名重命名
- 行列存压缩
- 添加与删除列
- 索引
- 注释
- 数据库
- 数据操作语句(DML)
- 事务管理和数据库管理
- SQL-Server语法迁移
- Oracle语法迁移
- Netezza语法迁移
- DSC常见问题
- 故障处理
- 术语表
- DataCheck
- DWS-Connector
- 服务端工具
-
API参考
- 使用前必读
- API概述
- 如何调用API
- 快速入门
-
API说明
- 可用区
-
集群管理
- 创建集群
- V2创建集群
- 创建逻辑集群
- 物理集群转换到逻辑集群
- 查询集群列表
- 查询逻辑集群列表
- 查询逻辑集群任务信息
- 查询逻辑集群磁盘信息
- 查询节点列表
- 查询逻辑集群可用ring环节点信息
- 查询集群拓扑ring环节点信息
- 查询集群详情
- 查询节点类型
- 删除集群
- 删除逻辑集群
- 编辑逻辑集群
- 重启逻辑集群
- 切换逻辑集群开关
- 删除空闲节点
- 从空闲节点扩容
- 恢复重分布
- 暂停重分布
- 重启集群
- 扩容集群
- 重置密码
- 创建集群前检查
- 集群缩容
- 下发重分布
- 查询重分布详情
- 查询专属分布式存储池列表
- 查询资源统计信息列表
- 主备恢复
- 解除只读
- 磁盘扩容
- 修改运维时间窗
- 查询集群CN节点
- 批量增加CN节点
- 批量删除CN节点
- 查询集群参数组
- 查询集群参数配置
- 修改集群参数配置
- 快照统计信息
- 查询合适的缩容数
- 查询参数修改审计记录
- 保存集群描述信息
- 查询单个实例
- 启动集群
- 停止集群
- 快照管理
- 事件管理
- 数据源
- 审计日志
- 资源管理
- 告警管理
- 连接管理
- 标签管理
- 配额管理
- 容灾管理
- 任务管理
- 主机监控
- 数据库权限管理
- 日志管理
- 升级管理
- 应用示例
- 权限及授权项说明
- 附录
- SDK参考
-
常见问题
- Top问题汇总
- 产品咨询
- 数据库连接
- 数据迁移
-
数据库使用
- 如何调整GaussDB(DWS)分布列?
- 如何查看和设置GaussDB(DWS)数据库的字符集编码格式
- 如何处理GaussDB(DWS)建表时date类型字段自动转换为timestamp类型的问题?
- GaussDB(DWS)是否需要定时对常用的表做VACUUM FULL和ANALYZE操作?
- 如何导出GaussDB(DWS)某张表结构?
- GaussDB(DWS)是否有高效的删除表数据的方法?
- 如何查看GaussDB(DWS)外部表信息?
- 如果GaussDB(DWS)建表时没有指定分布列,数据会怎么存储?
- 如何将GaussDB(DWS)联结查询的null结果替换成0?
- 如何查看GaussDB(DWS)表是行存还是列存?
- GaussDB(DWS)列存表的常用信息查询
- GaussDB(DWS)查询时索引失效场景解析
- 如何使用GaussDB(DWS)自定义函数改写CRC32()函数
- GaussDB(DWS)以pg_toast_temp*或pg_temp*开头的Schema是什么?
- GaussDB(DWS)查询时结果不一致的常见场景和解决方法
- GaussDB(DWS)哪些系统表不能做VACUUM FULL
- GaussDB(DWS)语句处于idle in transaction状态常见场景
- GaussDB(DWS)如何实现行转列及列转行?
- GaussDB(DWS)唯一约束和唯一索引有什么区别?
- GaussDB(DWS)函数和存储过程有什么区别?
- 如何删除GaussDB(DWS)重复的表数据?
-
集群管理
- 如何清理与回收GaussDB(DWS)存储空间?
- 为什么GaussDB(DWS)扩容后已使用存储容量比扩容前减少了很多?
- GaussDB(DWS)的磁盘空间/容量是如何统计的?
- GaussDB(DWS)添加云监控服务的告警规则时会话数阈值如何设置?
- 如何判断GaussDB(DWS)集群是x86还是ARM架构?
- GaussDB(DWS)扩容检查不通过怎么办?
- GaussDB(DWS)增加CN和扩容集群分别在什么场景下使用?
- GaussDB(DWS)经典变更规格与弹性变更规格、扩容、缩容分别在什么场景下使用?
- GaussDB(DWS)在CPU核数、内存相同的情况下,小规格多节点与大规格三节点集群如何选择?
- GaussDB(DWS) SSD云盘和SSD本地盘的区别?
- GaussDB(DWS)热数据存储和冷数据存储的区别?
- GaussDB(DWS)缩容按钮置灰如何处理?
- 账户与权限
- 数据库性能
- 备份恢复
-
故障排除
- 数据库连接管理
- JDBC/ODBC类
-
数据导入/导出
- 使用COPY FROM导入时报错“invalid byte sequence for encoding "UTF8": 0x00”
- GDS导入/导出类问题
- 创建GDS外表失败,提示不支持ROUNDROBIN
- 通过CDM将MySQL数据导入GaussDB(DWS)时出现字段超长,数据同步失败
- 执行创建OBS外表的SQL语句时,提示Access Denied
- GDS导入失败后,磁盘占用空间增大
- GDS导入数据时,脚本执行报错:out of memory
- 使用GDS传输数据的过程中,报错:connection failure error
- 使用DataArts Studio服务创建GaussDB(DWS)外表时不支持中文,如何处理
- 数据库参数修改
- 账号/权限/密码
-
集群性能
- 锁等待检测
- 执行SQL时出现表死锁,提示LOCK_WAIT_TIMEOUT锁等待超时
- 执行SQL时报错:abort transaction due to concurrent update
- 磁盘使用率高&集群只读处理方案
- SQL执行很慢,性能低,有时长时间运行未结束
- 数据倾斜导致SQL执行慢,大表SQL执行无结果
- VACUUM FULL一张表后,表文件大小无变化
- 删除表数据后执行了VACUUM,但存储空间并没有释放
- 执行VACUUM FULL命令时报错:Lock wait timeout
- VACUUM FULL执行慢
- 表数据膨胀导致SQL查询慢,用户前台页面数据加载不出
- 集群报错内存溢出
- 带自定义函数的语句不下推
- 列存表更新失败或多次更新后出现表膨胀
- 列存表多次插入后出现表膨胀
- 往GaussDB(DWS)写数据慢,客户端数据会有积压
- 分析查询效率异常降低的问题
- 未收集统计信息导致查询性能差
- 执行计划中有NestLoop导致SQL语句执行慢
- 未分区剪枝导致SQL查询慢
- 行数估算过小,优化器选择走NestLoop导致性能下降
- 语句中存在“in 常量”导致SQL执行无结果
- 单表点查询性能差
- 动态负载管理下的CCN排队
- 数据膨胀磁盘空间不足,导致性能降低
- 列存小CU多导致的性能慢问题
- 降低I/O的处理方案
- 高CPU系统性能调优方案
- 降低内存的处理方案
- 集群异常
-
数据库使用
- 插入或更新数据时报错,提示分布键不能被更新
- 执行SQL语句时提示“Connection reset by peer”
- VARCHAR(n)存储中文字符,提示value too long for type character varying?
- SQL语句中字段名大小写敏感问题
- 删除表时报错:cannot drop table test because other objects depend on it
- 多个表同时进行MERGE INTO UPDATE时,执行失败
- session_timeout设置导致JDBC业务报错
- DROP TABLE失败
- 使用string_agg函数查询执行结果不稳定
- 查询表大小时报错“could not open relation with OID xxx”
- DROP TABLE IF EXISTS语法误区
- 不同用户查询同表显示数据不同
- 修改索引只调用索引名提示索引不存在
- 执行CREATE SCHEMA语句时,报错SCHEMA已存在
- 删除数据库失败,提示有session正在连接
- 在Java中,读取character类型的表字段时返回类型为什么是byte?
- 执行表分区操作时,报错:start value of partition "xxx" NOT EQUAL up-boundary of last partition
- 重建索引失败
- 视图查询时执行失败
- 全局SQL查询
- 如何判断表是否执行过UPDATE或DELETE
- 执行业务报错“Can't fit xid into page”
- 执行业务报错:unable to get a stable set of rows in the source table
- DWS元数据不一致-分区索引异常
- 对系统表gs_wlm_session_info执行TRUNCATE命令报错
- 分区表插入数据报错:inserted partition key does not map to any table partition
- 范围分区表添加新分区报错upper boundary of adding partition MUST overtop last existing partition
- 查询表报错:missing chunk number %d for toast value %u in pg_toast_XXXX
- 向表中插入数据报错:duplicate key value violates unique constraint "%s"
- 执行业务报错could not determine which collation to use for string hashing
- 使用GaussDB(DWS) 的ODBC驱动,SQL查询结果中字符类型的字段内容会被截断
- 执行Plan Hint的Scan方式不生效
- 数据类型转换出现报错:invalid input syntax for xxx
- 业务报错:UNION types %s and %s cannot be matched
- 更新报错ERROR:Non-deterministic UPDATE
- 插入数据报错:null value in column '%s' violates not-null constraint
- 业务报错:unable to get a stable set of rows in the source table
- Oracle/TD/MySQL兼容模式下查询结果不一致
- 性能白皮书
- 技术白皮书
-
错误码参考
-
8.2.0及以下版本
- 管理控制台错误码
-
数据仓库错误码
- SQL标准错误码说明
- 第三方库错误码说明
- GAUSS-00001 -- GAUSS-00100
- GAUSS-00101 -- GAUSS-00200
- GAUSS-00201 -- GAUSS-00300
- GAUSS-00301 -- GAUSS-00400
- GAUSS-00401 -- GAUSS-00500
- GAUSS-00501 -- GAUSS-00600
- GAUSS-00601 -- GAUSS-00700
- GAUSS-00701 -- GAUSS-00800
- GAUSS-00801 -- GAUSS-00900
- GAUSS-00901 -- GAUSS-01000
- GAUSS-01001 -- GAUSS-01100
- GAUSS-01101 -- GAUSS-01200
- GAUSS-01201 -- GAUSS-01300
- GAUSS-01301 -- GAUSS-01400
- GAUSS-01401 -- GAUSS-01500
- GAUSS-01501 -- GAUSS-01600
- GAUSS-01601 -- GAUSS-01700
- GAUSS-01701 -- GAUSS-01800
- GAUSS-01801 -- GAUSS-01900
- GAUSS-01901 -- GAUSS-02000
- GAUSS-02001 -- GAUSS-02100
- GAUSS-02101 -- GAUSS-02200
- GAUSS-02201 -- GAUSS-02300
- GAUSS-02301 -- GAUSS-02400
- GAUSS-02401 -- GAUSS-02500
- GAUSS-02501 -- GAUSS-02600
- GAUSS-02601 -- GAUSS-02700
- GAUSS-02701 -- GAUSS-02800
- GAUSS-02801 -- GAUSS-02900
- GAUSS-02901 -- GAUSS-03000
- GAUSS-03001 -- GAUSS-03100
- GAUSS-03101 -- GAUSS-03200
- GAUSS-03201 -- GAUSS-03300
- GAUSS-03301 -- GAUSS-03400
- GAUSS-03401 -- GAUSS-03500
- GAUSS-03501 -- GAUSS-03600
- GAUSS-03601 -- GAUSS-03700
- GAUSS-03701 -- GAUSS-03800
- GAUSS-03801 -- GAUSS-03900
- GAUSS-03901 -- GAUSS-04000
- GAUSS-04001 -- GAUSS-04100
- GAUSS-04101 -- GAUSS-04200
- GAUSS-04201 -- GAUSS-04300
- GAUSS-04301 -- GAUSS-04400
- GAUSS-04401 -- GAUSS-04500
- GAUSS-04501 -- GAUSS-04600
- GAUSS-04601 -- GAUSS-04700
- GAUSS-04701 -- GAUSS-04800
- GAUSS-04901 -- GAUSS-04999
- GAUSS-05101 -- GAUSS-05200
- GAUSS-05201 -- GAUSS-05800
- GAUSS-05801 -- GAUSS-05900
- GAUSS-05901 -- GAUSS-05999
- GAUSS-06101 -- GAUSS-06200
- GAUSS-50000 -- GAUSS-50999
- GAUSS-51000 -- GAUSS-51999
- GAUSS-52000 -- GAUSS-52999
- GAUSS-53000 -- GAUSS-53999
- OE000
- 8.2.1及以上版本
-
8.2.0及以下版本
- 产品术语
-
更多文档
-
用户指南(阿布扎比区域)
- 产品介绍
- 入门
- GaussDB(DWS) 使用简介
- 准备工作
- 配置集群
- 连接集群
- 管理集群
- 集群高可用
- 监控与告警
- 集群安全管理
- 审计日志
-
常见问题
- 通用问题
- 集群管理
- 数据库连接
- 数据导入导出
- 帐户、密码、权限
-
数据库使用
- 如何调整分布列?
- 如何查看和设置数据库的字符集编码格式
- 如何处理建表时date类型字段自动转换为timestamp类型的问题?
- 是否需要定时对常用的表做VACUUM FULL和ANALYZE操作?
- GaussDB(DWS)数据库设置主键后还需要设置分布键吗?
- GaussDB(DWS)是否兼容PostgreSQL的存储过程?
- 如何理解分区表、数据分区和分区键?
- 如何导出某张表结构?
- 如何导出数据库中所有表和视图?
- 是否有高效的删除表数据的方法?
- 如何查看外部表信息?
- 如果建表时没有指定分布列,数据会怎么存储?
- 如何将联结查询的null结果替换成0?
- 如何查看表是行存还是列存?
- GaussDB(DWS)列存表的常用信息查询
- GaussDB(DWS)查询时索引失效场景解析
- 如何使用自定义函数改写CRC32()函数
- 以pg_toast_temp*或pg_temp*开头的Schema是什么?
- GaussDB(DWS)查询时结果不一致的常见场景和解决方法
- 哪些系统表不能做VACUUM FULL
- 语句处于idle in transaction状态常见场景
- 数据库性能
- 快照备份恢复
- 修订记录
- API参考(阿布扎比区域)
-
开发指南(阿布扎比区域)
- 欢迎
- 系统概述
- 数据迁移
- Oracle、Teradata和MySQL语法兼容性差异
- 管理数据库安全
- 开发设计建议
-
教程:使用JDBC或ODBC开发
- 开发规范
- 驱动下载
-
基于JDBC开发
- JDBC包与驱动类
- 开发流程
- 加载驱动
- 连接数据库
- 执行SQL语句
- 处理结果集
- 关闭连接
- 示例:常用操作
- 示例:重新执行应用SQL
- 示例:通过本地文件导入导出数据
- 示例:从MySQL向GaussDB(DWS)进行数据迁移
-
JDBC接口参考
- java.sql.Connection
- java.sql.CallableStatement
- java.sql.DatabaseMetaData
- java.sql.Driver
- java.sql.PreparedStatement
- java.sql.ResultSet
- java.sql.ResultSetMetaData
- java.sql.Statement
- javax.sql.ConnectionPoolDataSource
- javax.sql.DataSource
- javax.sql.PooledConnection
- javax.naming.Context
- javax.naming.spi.InitialContextFactory
- CopyManager
- 基于ODBC开发
- PostGIS Extension
- 资源负载管理
- 优化查询性能
- 用户自定义函数
- 存储过程
-
系统表和系统视图
- 系统表和系统视图概述
-
系统表
- GS_OBSSCANINFO
- GS_WLM_INSTANCE_HISTORY
- GS_WLM_OPERATOR_INFO
- GS_WLM_SESSION_INFO
- GS_WLM_USER_RESOURCE_HISTORY
- PG_AGGREGATE
- PG_AM
- PG_AMOP
- PG_AMPROC
- PG_ATTRDEF
- PG_ATTRIBUTE
- PG_AUTHID
- PG_AUTH_HISTORY
- PG_AUTH_MEMBERS
- PG_CAST
- PG_CLASS
- PG_COLLATION
- PG_CONSTRAINT
- PG_CONVERSION
- PG_DATABASE
- PG_DB_ROLE_SETTING
- PG_DEFAULT_ACL
- PG_DEPEND
- PG_DESCRIPTION
- PG_ENUM
- PG_EXTENSION
- PG_EXTENSION_DATA_SOURCE
- PG_FOREIGN_DATA_WRAPPER
- PG_FOREIGN_SERVER
- PG_FOREIGN_TABLE
- PG_INDEX
- PG_INHERITS
- PG_JOBS
- PG_LANGUAGE
- PG_LARGEOBJECT
- PG_LARGEOBJECT_METADATA
- PG_NAMESPACE
- PG_OBJECT
- PG_OBSSCANINFO
- PG_OPCLASS
- PG_OPERATOR
- PG_OPFAMILY
- PG_PARTITION
- PG_PLTEMPLATE
- PG_PROC
- PG_RANGE
- PG_REDACTION_COLUMN
- PG_REDACTION_POLICY
- PG_RLSPOLICY
- PG_RESOURCE_POOL
- PG_REWRITE
- PG_SECLABEL
- PG_SHDEPEND
- PG_SHDESCRIPTION
- PG_SHSECLABEL
- PG_STATISTIC
- PG_STATISTIC_EXT
- PG_SYNONYM
- PG_TABLESPACE
- PG_TRIGGER
- PG_TS_CONFIG
- PG_TS_CONFIG_MAP
- PG_TS_DICT
- PG_TS_PARSER
- PG_TS_TEMPLATE
- PG_TYPE
- PG_USER_MAPPING
- PG_USER_STATUS
- PG_WORKLOAD_ACTION
- PGXC_CLASS
- PGXC_GROUP
- PGXC_NODE
-
系统视图
- ALL_ALL_TABLES
- ALL_CONSTRAINTS
- ALL_CONS_COLUMNS
- ALL_COL_COMMENTS
- ALL_DEPENDENCIES
- ALL_IND_COLUMNS
- ALL_IND_EXPRESSIONS
- ALL_INDEXES
- ALL_OBJECTS
- ALL_PROCEDURES
- ALL_SEQUENCES
- ALL_SOURCE
- ALL_SYNONYMS
- ALL_TAB_COLUMNS
- ALL_TAB_COMMENTS
- ALL_TABLES
- ALL_USERS
- ALL_VIEWS
- DBA_DATA_FILES
- DBA_USERS
- DBA_COL_COMMENTS
- DBA_CONSTRAINTS
- DBA_CONS_COLUMNS
- DBA_IND_COLUMNS
- DBA_IND_EXPRESSIONS
- DBA_IND_PARTITIONS
- DBA_INDEXES
- DBA_OBJECTS
- DBA_PART_INDEXES
- DBA_PART_TABLES
- DBA_PROCEDURES
- DBA_SEQUENCES
- DBA_SOURCE
- DBA_SYNONYMS
- DBA_TAB_COLUMNS
- DBA_TAB_COMMENTS
- DBA_TAB_PARTITIONS
- DBA_TABLES
- DBA_TABLESPACES
- DBA_TRIGGERS
- DBA_VIEWS
- DUAL
- GLOBAL_REDO_STAT
- GLOBAL_REL_IOSTAT
- GLOBAL_STAT_DATABASE
- GLOBAL_WORKLOAD_SQL_COUNT
- GLOBAL_WORKLOAD_SQL_ELAPSE_TIME
- GLOBAL_WORKLOAD_TRANSACTION
- GS_ALL_CONTROL_GROUP_INFO
- GS_CLUSTER_RESOURCE_INFO
- GS_INSTR_UNIQUE_SQL
- GS_REL_IOSTAT
- GS_NODE_STAT_RESET_TIME
- GS_SESSION_CPU_STATISTICS
- GS_SESSION_MEMORY_STATISTICS
- GS_SQL_COUNT
- GS_WAIT_EVENTS
- GS_WLM_OPERAROR_INFO
- GS_WLM_OPERATOR_HISTORY
- GS_WLM_OPERATOR_STATISTICS
- GS_WLM_SESSION_INFO
- GS_WLM_SESSION_HISTORY
- GS_WLM_SESSION_STATISTICS
- GS_WLM_SQL_ALLOW
- GS_WORKLOAD_SQL_COUNT
- GS_WORKLOAD_SQL_ELAPSE_TIME
- GS_WORKLOAD_TRANSACTION
- GS_STAT_DB_CU
- GS_STAT_SESSION_CU
- GS_TOTAL_NODEGROUP_MEMORY_DETAIL
- GS_USER_TRANSACTION
- GS_VIEW_DEPENDENCY
- GS_VIEW_DEPENDENCY_PATH
- GS_VIEW_INVALID
- PG_AVAILABLE_EXTENSION_VERSIONS
- PG_AVAILABLE_EXTENSIONS
- PG_BULKLOAD_STATISTICS
- PG_COMM_CLIENT_INFO
- PG_COMM_DELAY
- PG_COMM_STATUS
- PG_COMM_RECV_STREAM
- PG_COMM_SEND_STREAM
- PG_CONTROL_GROUP_CONFIG
- PG_CURSORS
- PG_EXT_STATS
- PG_GET_INVALID_BACKENDS
- PG_GET_SENDERS_CATCHUP_TIME
- PG_GROUP
- PG_INDEXES
- PG_JOB
- PG_JOB_PROC
- PG_JOB_SINGLE
- PG_LIFECYCLE_DATA_DISTRIBUTE
- PG_LOCKS
- PG_NODE_ENV
- PG_OS_THREADS
- PG_POOLER_STATUS
- PG_PREPARED_STATEMENTS
- PG_PREPARED_XACTS
- PG_QUERYBAND_ACTION
- PG_REPLICATION_SLOTS
- PG_ROLES
- PG_RULES
- PG_RUNNING_XACTS
- PG_SECLABELS
- PG_SESSION_WLMSTAT
- PG_SESSION_IOSTAT
- PG_SETTINGS
- PG_SHADOW
- PG_SHARED_MEMORY_DETAIL
- PG_STATS
- PG_STAT_ACTIVITY
- PG_STAT_ALL_INDEXES
- PG_STAT_ALL_TABLES
- PG_STAT_BAD_BLOCK
- PG_STAT_BGWRITER
- PG_STAT_DATABASE
- PG_STAT_DATABASE_CONFLICTS
- PG_STAT_GET_MEM_MBYTES_RESERVED
- PG_STAT_USER_FUNCTIONS
- PG_STAT_USER_INDEXES
- PG_STAT_USER_TABLES
- PG_STAT_REPLICATION
- PG_STAT_SYS_INDEXES
- PG_STAT_SYS_TABLES
- PG_STAT_XACT_ALL_TABLES
- PG_STAT_XACT_SYS_TABLES
- PG_STAT_XACT_USER_FUNCTIONS
- PG_STAT_XACT_USER_TABLES
- PG_STATIO_ALL_INDEXES
- PG_STATIO_ALL_SEQUENCES
- PG_STATIO_ALL_TABLES
- PG_STATIO_SYS_INDEXES
- PG_STATIO_SYS_SEQUENCES
- PG_STATIO_SYS_TABLES
- PG_STATIO_USER_INDEXES
- PG_STATIO_USER_SEQUENCES
- PG_STATIO_USER_TABLES
- PG_THREAD_WAIT_STATUS
- PG_TABLES
- PG_TIMEZONE_ABBREVS
- PG_TIMEZONE_NAMES
- PG_TOTAL_MEMORY_DETAIL
- PG_TOTAL_SCHEMA_INFO
- PG_TOTAL_USER_RESOURCE_INFO
- PG_USER
- PG_USER_MAPPINGS
- PG_VIEWS
- PG_WLM_STATISTICS
- PGXC_BULKLOAD_PROGRESS
- PGXC_BULKLOAD_STATISTICS
- PGXC_COMM_CLIENT_INFO
- PGXC_COMM_DELAY
- PGXC_COMM_RECV_STREAM
- PGXC_COMM_SEND_STREAM
- PGXC_COMM_STATUS
- PGXC_DEADLOCK
- PGXC_GET_STAT_ALL_TABLES
- PGXC_GET_STAT_ALL_PARTITIONS
- PGXC_GET_TABLE_SKEWNESS
- PGXC_GTM_SNAPSHOT_STATUS
- PGXC_INSTANCE_TIME
- PGXC_INSTR_UNIQUE_SQL
- PGXC_LOCK_CONFLICTS
- PGXC_NODE_ENV
- PGXC_NODE_STAT_RESET_TIME
- PGXC_OS_RUN_INFO
- PGXC_OS_THREADS
- PGXC_PREPARED_XACTS
- PGXC_REDO_STAT
- PGXC_REL_IOSTAT
- PGXC_REPLICATION_SLOTS
- PGXC_RUNNING_XACTS
- PGXC_SETTINGS
- PGXC_STAT_ACTIVITY
- PGXC_STAT_BAD_BLOCK
- PGXC_STAT_BGWRITER
- PGXC_STAT_DATABASE
- PGXC_STAT_REPLICATION
- PGXC_SQL_COUNT
- PGXC_THREAD_WAIT_STATUS
- PGXC_TOTAL_MEMORY_DETAIL
- PGXC_TOTAL_SCHEMA_INFO
- PGXC_TOTAL_SCHEMA_INFO_ANALYZE
- PGXC_USER_TRANSACTION
- PGXC_VARIABLE_INFO
- PGXC_WAIT_EVENTS
- PGXC_WLM_OPERATOR_HISTORY
- PGXC_WLM_OPERATOR_INFO
- PGXC_WLM_OPERATOR_STATISTICS
- PGXC_WLM_SESSION_INFO
- PGXC_WLM_SESSION_HISTORY
- PGXC_WLM_SESSION_STATISTICS
- PGXC_WLM_WORKLOAD_RECORDS
- PGXC_WORKLOAD_SQL_COUNT
- PGXC_WORKLOAD_SQL_ELAPSE_TIME
- PGXC_WORKLOAD_TRANSACTION
- PLAN_TABLE
- PLAN_TABLE_DATA
- PV_FILE_STAT
- PV_INSTANCE_TIME
- PV_OS_RUN_INFO
- PV_SESSION_MEMORY
- PV_SESSION_MEMORY_DETAIL
- PV_SESSION_STAT
- PV_SESSION_TIME
- PV_TOTAL_MEMORY_DETAIL
- PV_REDO_STAT
- REDACTION_COLUMNS
- REDACTION_POLICIES
- USER_COL_COMMENTS
- USER_CONSTRAINTS
- USER_CONS_COLUMNS
- USER_INDEXES
- USER_IND_COLUMNS
- USER_IND_EXPRESSIONS
- USER_IND_PARTITIONS
- USER_JOBS
- USER_OBJECTS
- USER_PART_INDEXES
- USER_PART_TABLES
- USER_PROCEDURES
- USER_SEQUENCES
- USER_SOURCE
- USER_SYNONYMS
- USER_TAB_COLUMNS
- USER_TAB_COMMENTS
- USER_TAB_PARTITIONS
- USER_TABLES
- USER_TRIGGERS
- USER_VIEWS
- V$SESSION
- V$SESSION_LONGOPS
- GUC参数
- 术语表
-
语法参考(阿布扎比区域)
- GaussDB(DWS) SQL
- GaussDB(DWS)与PostgreSQL的差异
- 关键字
- 数据类型
- 常量与宏
- 函数和操作符
- 表达式
- 类型转换
- 全文检索
- 系统操作
- 事务控制
-
DDL语法
- DDL语法一览表
- ALTER DATABASE
- ALTER FOREIGN TABLE (For GDS)
- ALTER FOREIGN TABLE (For HDFS or OBS)
- ALTER FUNCTION
- ALTER GROUP
- ALTER INDEX
- ALTER LARGE OBJECT
- ALTER REDACTION POLICY
- ALTER RESOURCE POOL
- ALTER ROLE
- ALTER ROW LEVEL SECURITY POLICY
- ALTER SCHEMA
- ALTER SEQUENCE
- ALTER SERVER
- ALTER SESSION
- ALTER SYNONYM
- ALTER SYSTEM KILL SESSION
- ALTER TABLE
- ALTER TABLE PARTITION
- ALTER TEXT SEARCH CONFIGURATION
- ALTER TEXT SEARCH DICTIONARY
- ALTER TRIGGER
- ALTER TYPE
- ALTER USER
- ALTER VIEW
- CLEAN CONNECTION
- CLOSE
- CLUSTER
- COMMENT
- CREATE BARRIER
- CREATE DATABASE
- CREATE FOREIGN TABLE (GDS导入导出)
- CREATE FOREIGN TABLE (SQL on OBS or Hadoop)
- CREATE FOREIGN TABLE (OBS导入导出)
- CREATE FUNCTION
- CREATE GROUP
- CREATE INDEX
- CREATE REDACTION POLICY
- CREATE ROW LEVEL SECURITY POLICY
- CREATE PROCEDURE
- CREATE RESOURCE POOL
- CREATE ROLE
- CREATE SCHEMA
- CREATE SEQUENCE
- CREATE SERVER
- CREATE SYNONYM
- CREATE TABLE
- CREATE TABLE AS
- CREATE TABLE PARTITION
- CREATE TEXT SEARCH CONFIGURATION
- CREATE TEXT SEARCH DICTIONARY
- CREATE TRIGGER
- CREATE TYPE
- CREATE USER
- CREATE VIEW
- CURSOR
- DROP DATABASE
- DROP FOREIGN TABLE
- DROP FUNCTION
- DROP GROUP
- DROP INDEX
- DROP OWNED
- DROP REDACTION POLICY
- DROP ROW LEVEL SECURITY POLICY
- DROP PROCEDURE
- DROP RESOURCE POOL
- DROP ROLE
- DROP SCHEMA
- DROP SEQUENCE
- DROP SERVER
- DROP SYNONYM
- DROP TABLE
- DROP TEXT SEARCH CONFIGURATION
- DROP TEXT SEARCH DICTIONARY
- DROP TRIGGER
- DROP TYPE
- DROP USER
- DROP VIEW
- FETCH
- MOVE
- REINDEX
- RESET
- SET
- SET CONSTRAINTS
- SET ROLE
- SET SESSION AUTHORIZATION
- SHOW
- TRUNCATE
- VACUUM
- DML语法
- DCL语法
- DQL语法
- TCL语法
- GIN索引
-
工具指南(阿布扎比区域)
- 工具简介
- 客户端工具下载
- gsql命令行客户端工具
- Data Studio数据库集成开发工具
- GDS并行数据加载工具
- DSC SQL语法迁移工具
- 服务端工具
- 错误码参考(阿布扎比区域)
-
用户指南(巴黎区域)
- 产品介绍
- 入门
- GaussDB(DWS) 使用简介
- 准备工作
- 创建与删除集群
- 连接集群
- 监控与告警
- 变配与扩容
- 备份与容灾
- 智能运维
- 集群管理
- 集群日志管理
- 数据库用户管理
- 审计日志
- 集群安全管理
- 资源管理
- 管理数据源
- 逻辑集群管理
-
常见问题
- 通用问题
-
数据库使用
- 如何调整分布列?
- 如何查看和设置数据库的字符集编码格式
- 如何处理建表时date类型字段自动转换为timestamp类型的问题?
- 是否需要定时对常用的表做VACUUM FULL和ANALYZE操作?
- GaussDB(DWS)数据库设置主键后还需要设置分布键吗?
- GaussDB(DWS)是否兼容PostgreSQL的存储过程?
- 如何理解分区表、数据分区和分区键?
- 如何导出某张表结构?
- 是否有高效的删除表数据的方法?
- 如何查看外部表信息?
- 如果建表时没有指定分布列,数据会怎么存储?
- 如何将联结查询的null结果替换成0?
- 如何查看表是行存还是列存?
- GaussDB(DWS)列存表的常用信息查询
- GaussDB(DWS)查询时索引失效场景解析
- 如何使用自定义函数改写CRC32()函数
- 以pg_toast_temp*或pg_temp*开头的Schema是什么?
- GaussDB(DWS)查询时结果不一致的常见场景和解决方法
- 哪些系统表不能做VACUUM FULL
- 语句处于idle in transaction状态常见场景
- GaussDB(DWS)如何实现行转列及列转行?
- 唯一约束和唯一索引有什么区别?
- 函数和存储过程有什么区别?
- 如何删除重复的表数据?
- 集群管理
- 数据库连接
- 数据导入导出
- 账户、密码、权限
- 数据库性能
- 快照备份恢复
- API参考 (巴黎区域)
-
开发指南(巴黎区域)
- 欢迎
- 系统概述
- 数据迁移
- Oracle、Teradata和MySQL语法兼容性差异
- 管理数据库安全
- 开发设计建议
-
教程:使用JDBC或ODBC开发
- 开发规范
- 驱动下载
-
基于JDBC开发
- JDBC包与驱动类
- 开发流程
- 加载驱动
- 连接数据库
- 执行SQL语句
- 处理结果集
- 关闭连接
- 示例:常用操作
- 示例:重新执行应用SQL
- 示例:通过本地文件导入导出数据
- 示例:从MySQL向GaussDB(DWS)进行数据迁移
-
JDBC接口参考
- java.sql.Connection
- java.sql.CallableStatement
- java.sql.DatabaseMetaData
- java.sql.Driver
- java.sql.PreparedStatement
- java.sql.ResultSet
- java.sql.ResultSetMetaData
- java.sql.Statement
- javax.sql.ConnectionPoolDataSource
- javax.sql.DataSource
- javax.sql.PooledConnection
- javax.naming.Context
- javax.naming.spi.InitialContextFactory
- CopyManager
- 基于ODBC开发
- PostGIS Extension
- 资源负载管理
- 资源监控
- 优化查询性能
- 用户自定义函数
- 存储过程
-
系统表和系统视图
- 系统表和系统视图概述
-
系统表
- GS_OBSSCANINFO
- GS_WLM_INSTANCE_HISTORY
- GS_WLM_OPERATOR_INFO
- GS_WLM_SESSION_INFO
- GS_WLM_USER_RESOURCE_HISTORY
- PG_AGGREGATE
- PG_AM
- PG_AMOP
- PG_AMPROC
- PG_ATTRDEF
- PG_ATTRIBUTE
- PG_AUTHID
- PG_AUTH_HISTORY
- PG_AUTH_MEMBERS
- PG_CAST
- PG_CLASS
- PG_COLLATION
- PG_CONSTRAINT
- PG_CONVERSION
- PG_DATABASE
- PG_DB_ROLE_SETTING
- PG_DEFAULT_ACL
- PG_DEPEND
- PG_DESCRIPTION
- PG_ENUM
- PG_EXTENSION
- PG_EXTENSION_DATA_SOURCE
- PG_FOREIGN_DATA_WRAPPER
- PG_FOREIGN_SERVER
- PG_FOREIGN_TABLE
- PG_INDEX
- PG_INHERITS
- PG_JOBS
- PG_LANGUAGE
- PG_LARGEOBJECT
- PG_LARGEOBJECT_METADATA
- PG_NAMESPACE
- PG_OBJECT
- PG_OBSSCANINFO
- PG_OPCLASS
- PG_OPERATOR
- PG_OPFAMILY
- PG_PARTITION
- PG_PLTEMPLATE
- PG_PROC
- PG_RANGE
- PG_REDACTION_COLUMN
- PG_REDACTION_POLICY
- PG_RLSPOLICY
- PG_RESOURCE_POOL
- PG_REWRITE
- PG_SECLABEL
- PG_SHDEPEND
- PG_SHDESCRIPTION
- PG_SHSECLABEL
- PG_STATISTIC
- PG_STATISTIC_EXT
- PG_SYNONYM
- PG_TABLESPACE
- PG_TRIGGER
- PG_TS_CONFIG
- PG_TS_CONFIG_MAP
- PG_TS_DICT
- PG_TS_PARSER
- PG_TS_TEMPLATE
- PG_TYPE
- PG_USER_MAPPING
- PG_USER_STATUS
- PG_WORKLOAD_ACTION
- PGXC_CLASS
- PGXC_GROUP
- PGXC_NODE
-
系统视图
- ALL_ALL_TABLES
- ALL_CONSTRAINTS
- ALL_CONS_COLUMNS
- ALL_COL_COMMENTS
- ALL_DEPENDENCIES
- ALL_IND_COLUMNS
- ALL_IND_EXPRESSIONS
- ALL_INDEXES
- ALL_OBJECTS
- ALL_PROCEDURES
- ALL_SEQUENCES
- ALL_SOURCE
- ALL_SYNONYMS
- ALL_TAB_COLUMNS
- ALL_TAB_COMMENTS
- ALL_TABLES
- ALL_USERS
- ALL_VIEWS
- DBA_DATA_FILES
- DBA_USERS
- DBA_COL_COMMENTS
- DBA_CONSTRAINTS
- DBA_CONS_COLUMNS
- DBA_IND_COLUMNS
- DBA_IND_EXPRESSIONS
- DBA_IND_PARTITIONS
- DBA_INDEXES
- DBA_OBJECTS
- DBA_PART_INDEXES
- DBA_PART_TABLES
- DBA_PROCEDURES
- DBA_SEQUENCES
- DBA_SOURCE
- DBA_SYNONYMS
- DBA_TAB_COLUMNS
- DBA_TAB_COMMENTS
- DBA_TAB_PARTITIONS
- DBA_TABLES
- DBA_TABLESPACES
- DBA_TRIGGERS
- DBA_VIEWS
- DUAL
- GLOBAL_REDO_STAT
- GLOBAL_REL_IOSTAT
- GLOBAL_STAT_DATABASE
- GLOBAL_WORKLOAD_SQL_COUNT
- GLOBAL_WORKLOAD_SQL_ELAPSE_TIME
- GLOBAL_WORKLOAD_TRANSACTION
- GS_ALL_CONTROL_GROUP_INFO
- GS_CLUSTER_RESOURCE_INFO
- GS_INSTR_UNIQUE_SQL
- GS_REL_IOSTAT
- GS_NODE_STAT_RESET_TIME
- GS_SESSION_CPU_STATISTICS
- GS_SESSION_MEMORY_STATISTICS
- GS_SQL_COUNT
- GS_WAIT_EVENTS
- GS_WLM_OPERAROR_INFO
- GS_WLM_OPERATOR_HISTORY
- GS_WLM_OPERATOR_STATISTICS
- GS_WLM_SESSION_INFO
- GS_WLM_SESSION_HISTORY
- GS_WLM_SESSION_STATISTICS
- GS_WLM_SQL_ALLOW
- GS_WORKLOAD_SQL_COUNT
- GS_WORKLOAD_SQL_ELAPSE_TIME
- GS_WORKLOAD_TRANSACTION
- GS_STAT_DB_CU
- GS_STAT_SESSION_CU
- GS_TOTAL_NODEGROUP_MEMORY_DETAIL
- GS_USER_TRANSACTION
- GS_VIEW_DEPENDENCY
- GS_VIEW_DEPENDENCY_PATH
- GS_VIEW_INVALID
- PG_AVAILABLE_EXTENSION_VERSIONS
- PG_AVAILABLE_EXTENSIONS
- PG_BULKLOAD_STATISTICS
- PG_COMM_CLIENT_INFO
- PG_COMM_DELAY
- PG_COMM_STATUS
- PG_COMM_RECV_STREAM
- PG_COMM_SEND_STREAM
- PG_CONTROL_GROUP_CONFIG
- PG_CURSORS
- PG_EXT_STATS
- PG_GET_INVALID_BACKENDS
- PG_GET_SENDERS_CATCHUP_TIME
- PG_GROUP
- PG_INDEXES
- PG_JOB
- PG_JOB_PROC
- PG_JOB_SINGLE
- PG_LIFECYCLE_DATA_DISTRIBUTE
- PG_LOCKS
- PG_NODE_ENV
- PG_OS_THREADS
- PG_POOLER_STATUS
- PG_PREPARED_STATEMENTS
- PG_PREPARED_XACTS
- PG_QUERYBAND_ACTION
- PG_REPLICATION_SLOTS
- PG_ROLES
- PG_RULES
- PG_RUNNING_XACTS
- PG_SECLABELS
- PG_SESSION_WLMSTAT
- PG_SESSION_IOSTAT
- PG_SETTINGS
- PG_SHADOW
- PG_SHARED_MEMORY_DETAIL
- PG_STATS
- PG_STAT_ACTIVITY
- PG_STAT_ALL_INDEXES
- PG_STAT_ALL_TABLES
- PG_STAT_BAD_BLOCK
- PG_STAT_BGWRITER
- PG_STAT_DATABASE
- PG_STAT_DATABASE_CONFLICTS
- PG_STAT_GET_MEM_MBYTES_RESERVED
- PG_STAT_USER_FUNCTIONS
- PG_STAT_USER_INDEXES
- PG_STAT_USER_TABLES
- PG_STAT_REPLICATION
- PG_STAT_SYS_INDEXES
- PG_STAT_SYS_TABLES
- PG_STAT_XACT_ALL_TABLES
- PG_STAT_XACT_SYS_TABLES
- PG_STAT_XACT_USER_FUNCTIONS
- PG_STAT_XACT_USER_TABLES
- PG_STATIO_ALL_INDEXES
- PG_STATIO_ALL_SEQUENCES
- PG_STATIO_ALL_TABLES
- PG_STATIO_SYS_INDEXES
- PG_STATIO_SYS_SEQUENCES
- PG_STATIO_SYS_TABLES
- PG_STATIO_USER_INDEXES
- PG_STATIO_USER_SEQUENCES
- PG_STATIO_USER_TABLES
- PG_THREAD_WAIT_STATUS
- PG_TABLES
- PG_TIMEZONE_ABBREVS
- PG_TIMEZONE_NAMES
- PG_TOTAL_MEMORY_DETAIL
- PG_TOTAL_SCHEMA_INFO
- PG_TOTAL_USER_RESOURCE_INFO
- PG_USER
- PG_USER_MAPPINGS
- PG_VIEWS
- PG_WLM_STATISTICS
- PGXC_BULKLOAD_PROGRESS
- PGXC_BULKLOAD_STATISTICS
- PGXC_COMM_CLIENT_INFO
- PGXC_COMM_DELAY
- PGXC_COMM_RECV_STREAM
- PGXC_COMM_SEND_STREAM
- PGXC_COMM_STATUS
- PGXC_DEADLOCK
- PGXC_GET_STAT_ALL_TABLES
- PGXC_GET_STAT_ALL_PARTITIONS
- PGXC_GET_TABLE_SKEWNESS
- PGXC_GTM_SNAPSHOT_STATUS
- PGXC_INSTANCE_TIME
- PGXC_INSTR_UNIQUE_SQL
- PGXC_LOCK_CONFLICTS
- PGXC_NODE_ENV
- PGXC_NODE_STAT_RESET_TIME
- PGXC_OS_RUN_INFO
- PGXC_OS_THREADS
- PGXC_PREPARED_XACTS
- PGXC_REDO_STAT
- PGXC_REL_IOSTAT
- PGXC_REPLICATION_SLOTS
- PGXC_RUNNING_XACTS
- PGXC_SETTINGS
- PGXC_STAT_ACTIVITY
- PGXC_STAT_BAD_BLOCK
- PGXC_STAT_BGWRITER
- PGXC_STAT_DATABASE
- PGXC_STAT_REPLICATION
- PGXC_SQL_COUNT
- PGXC_THREAD_WAIT_STATUS
- PGXC_TOTAL_MEMORY_DETAIL
- PGXC_TOTAL_SCHEMA_INFO
- PGXC_TOTAL_SCHEMA_INFO_ANALYZE
- PGXC_USER_TRANSACTION
- PGXC_VARIABLE_INFO
- PGXC_WAIT_EVENTS
- PGXC_WLM_OPERATOR_HISTORY
- PGXC_WLM_OPERATOR_INFO
- PGXC_WLM_OPERATOR_STATISTICS
- PGXC_WLM_SESSION_INFO
- PGXC_WLM_SESSION_HISTORY
- PGXC_WLM_SESSION_STATISTICS
- PGXC_WLM_WORKLOAD_RECORDS
- PGXC_WORKLOAD_SQL_COUNT
- PGXC_WORKLOAD_SQL_ELAPSE_TIME
- PGXC_WORKLOAD_TRANSACTION
- PLAN_TABLE
- PLAN_TABLE_DATA
- PV_FILE_STAT
- PV_INSTANCE_TIME
- PV_OS_RUN_INFO
- PV_SESSION_MEMORY
- PV_SESSION_MEMORY_DETAIL
- PV_SESSION_STAT
- PV_SESSION_TIME
- PV_TOTAL_MEMORY_DETAIL
- PV_REDO_STAT
- REDACTION_COLUMNS
- REDACTION_POLICIES
- USER_COL_COMMENTS
- USER_CONSTRAINTS
- USER_CONS_COLUMNS
- USER_INDEXES
- USER_IND_COLUMNS
- USER_IND_EXPRESSIONS
- USER_IND_PARTITIONS
- USER_JOBS
- USER_OBJECTS
- USER_PART_INDEXES
- USER_PART_TABLES
- USER_PROCEDURES
- USER_SEQUENCES
- USER_SOURCE
- USER_SYNONYMS
- USER_TAB_COLUMNS
- USER_TAB_COMMENTS
- USER_TAB_PARTITIONS
- USER_TABLES
- USER_TRIGGERS
- USER_VIEWS
- V$SESSION
- V$SESSION_LONGOPS
- GUC参数
- 术语表
-
语法参考(巴黎区域)
- GaussDB(DWS) SQL
- GaussDB(DWS)与PostgreSQL的差异
- 关键字
- 数据类型
- 常量与宏
- 函数和操作符
- 表达式
- 类型转换
- 全文检索
- 系统操作
- 事务控制
-
DDL语法
- DDL语法一览表
- ALTER DATABASE
- ALTER FOREIGN TABLE (For GDS)
- ALTER FOREIGN TABLE (For HDFS or OBS)
- ALTER FUNCTION
- ALTER GROUP
- ALTER INDEX
- ALTER LARGE OBJECT
- ALTER REDACTION POLICY
- ALTER RESOURCE POOL
- ALTER ROLE
- ALTER ROW LEVEL SECURITY POLICY
- ALTER SCHEMA
- ALTER SEQUENCE
- ALTER SERVER
- ALTER SESSION
- ALTER SYNONYM
- ALTER SYSTEM KILL SESSION
- ALTER TABLE
- ALTER TABLE PARTITION
- ALTER TEXT SEARCH CONFIGURATION
- ALTER TEXT SEARCH DICTIONARY
- ALTER TRIGGER
- ALTER TYPE
- ALTER USER
- ALTER VIEW
- CLEAN CONNECTION
- CLOSE
- CLUSTER
- COMMENT
- CREATE BARRIER
- CREATE DATABASE
- CREATE FOREIGN TABLE (GDS导入导出)
- CREATE FOREIGN TABLE (SQL on OBS or Hadoop )
- CREATE FOREIGN TABLE (OBS导入导出)
- CREATE FUNCTION
- CREATE GROUP
- CREATE INDEX
- CREATE REDACTION POLICY
- CREATE ROW LEVEL SECURITY POLICY
- CREATE PROCEDURE
- CREATE RESOURCE POOL
- CREATE ROLE
- CREATE SCHEMA
- CREATE SEQUENCE
- CREATE SERVER
- CREATE SYNONYM
- CREATE TABLE
- CREATE TABLE AS
- CREATE TABLE PARTITION
- CREATE TABLESPACE
- CREATE TEXT SEARCH CONFIGURATION
- CREATE TEXT SEARCH DICTIONARY
- CREATE TRIGGER
- CREATE TYPE
- CREATE USER
- CREATE VIEW
- CURSOR
- DROP DATABASE
- DROP FOREIGN TABLE
- DROP FUNCTION
- DROP GROUP
- DROP INDEX
- DROP OWNED
- DROP REDACTION POLICY
- DROP ROW LEVEL SECURITY POLICY
- DROP PROCEDURE
- DROP RESOURCE POOL
- DROP ROLE
- DROP SCHEMA
- DROP SEQUENCE
- DROP SERVER
- DROP SYNONYM
- DROP TABLE
- DROP TABLESPACE
- DROP TEXT SEARCH CONFIGURATION
- DROP TEXT SEARCH DICTIONARY
- DROP TRIGGER
- DROP TYPE
- DROP USER
- DROP VIEW
- FETCH
- MOVE
- REINDEX
- RESET
- SET
- SET CONSTRAINTS
- SET ROLE
- SET SESSION AUTHORIZATION
- SHOW
- TRUNCATE
- VACUUM
- DML语法
- DCL语法
- DQL语法
- TCL语法
- GIN索引
-
工具指南(巴黎区域)
- 工具简介
- 客户端工具下载
- gsql命令行客户端工具
- Data Studio数据库集成开发工具
- GDS并行数据加载工具
- DSC SQL语法迁移工具
- 服务端工具
- 错误码参考(巴黎区域)
- 用户指南(吉隆坡区域)
- API参考(吉隆坡区域)
-
开发指南(吉隆坡地区)
- 欢迎
- 系统概述
- 数据迁移
- Oracle、Teradata和MySQL语法兼容性差异
- 管理数据库安全
- 开发设计建议
-
教程:使用JDBC或ODBC开发
- 开发规范
- 驱动下载
-
基于JDBC开发
- JDBC包与驱动类
- 开发流程
- 加载驱动
- 连接数据库
- 执行SQL语句
- 处理结果集
- 关闭连接
- 示例:常用操作
- 示例:重新执行应用SQL
- 示例:通过本地文件导入导出数据
- 示例:从MySQL向GaussDB(DWS)进行数据迁移
-
JDBC接口参考
- java.sql.Connection
- java.sql.CallableStatement
- java.sql.DatabaseMetaData
- java.sql.Driver
- java.sql.PreparedStatement
- java.sql.ResultSet
- java.sql.ResultSetMetaData
- java.sql.Statement
- javax.sql.ConnectionPoolDataSource
- javax.sql.DataSource
- javax.sql.PooledConnection
- javax.naming.Context
- javax.naming.spi.InitialContextFactory
- CopyManager
- 基于ODBC开发
- PostGIS Extension
- 资源负载管理
- 资源监控
- 优化查询性能
- 用户自定义函数
- 存储过程
-
系统表和系统视图
- 系统表和系统视图概述
-
系统表
- GS_OBSSCANINFO
- GS_WLM_INSTANCE_HISTORY
- GS_WLM_OPERATOR_INFO
- GS_WLM_SESSION_INFO
- GS_WLM_USER_RESOURCE_HISTORY
- PG_AGGREGATE
- PG_AM
- PG_AMOP
- PG_AMPROC
- PG_ATTRDEF
- PG_ATTRIBUTE
- PG_AUTHID
- PG_AUTH_HISTORY
- PG_AUTH_MEMBERS
- PG_CAST
- PG_CLASS
- PG_COLLATION
- PG_CONSTRAINT
- PG_CONVERSION
- PG_DATABASE
- PG_DB_ROLE_SETTING
- PG_DEFAULT_ACL
- PG_DEPEND
- PG_DESCRIPTION
- PG_ENUM
- PG_EXTENSION
- PG_EXTENSION_DATA_SOURCE
- PG_FOREIGN_DATA_WRAPPER
- PG_FOREIGN_SERVER
- PG_FOREIGN_TABLE
- PG_INDEX
- PG_INHERITS
- PG_JOBS
- PG_LANGUAGE
- PG_LARGEOBJECT
- PG_LARGEOBJECT_METADATA
- PG_NAMESPACE
- PG_OBJECT
- PG_OBSSCANINFO
- PG_OPCLASS
- PG_OPERATOR
- PG_OPFAMILY
- PG_PARTITION
- PG_PLTEMPLATE
- PG_PROC
- PG_RANGE
- PG_REDACTION_COLUMN
- PG_REDACTION_POLICY
- PG_RLSPOLICY
- PG_RESOURCE_POOL
- PG_REWRITE
- PG_SECLABEL
- PG_SHDEPEND
- PG_SHDESCRIPTION
- PG_SHSECLABEL
- PG_STATISTIC
- PG_STATISTIC_EXT
- PG_SYNONYM
- PG_TABLESPACE
- PG_TRIGGER
- PG_TS_CONFIG
- PG_TS_CONFIG_MAP
- PG_TS_DICT
- PG_TS_PARSER
- PG_TS_TEMPLATE
- PG_TYPE
- PG_USER_MAPPING
- PG_USER_STATUS
- PG_WORKLOAD_ACTION
- PGXC_CLASS
- PGXC_GROUP
- PGXC_NODE
-
系统视图
- ALL_ALL_TABLES
- ALL_CONSTRAINTS
- ALL_CONS_COLUMNS
- ALL_COL_COMMENTS
- ALL_DEPENDENCIES
- ALL_IND_COLUMNS
- ALL_IND_EXPRESSIONS
- ALL_INDEXES
- ALL_OBJECTS
- ALL_PROCEDURES
- ALL_SEQUENCES
- ALL_SOURCE
- ALL_SYNONYMS
- ALL_TAB_COLUMNS
- ALL_TAB_COMMENTS
- ALL_TABLES
- ALL_USERS
- ALL_VIEWS
- DBA_DATA_FILES
- DBA_USERS
- DBA_COL_COMMENTS
- DBA_CONSTRAINTS
- DBA_CONS_COLUMNS
- DBA_IND_COLUMNS
- DBA_IND_EXPRESSIONS
- DBA_IND_PARTITIONS
- DBA_INDEXES
- DBA_OBJECTS
- DBA_PART_INDEXES
- DBA_PART_TABLES
- DBA_PROCEDURES
- DBA_SEQUENCES
- DBA_SOURCE
- DBA_SYNONYMS
- DBA_TAB_COLUMNS
- DBA_TAB_COMMENTS
- DBA_TAB_PARTITIONS
- DBA_TABLES
- DBA_TABLESPACES
- DBA_TRIGGERS
- DBA_VIEWS
- DUAL
- GLOBAL_REDO_STAT
- GLOBAL_REL_IOSTAT
- GLOBAL_STAT_DATABASE
- GLOBAL_WORKLOAD_SQL_COUNT
- GLOBAL_WORKLOAD_SQL_ELAPSE_TIME
- GLOBAL_WORKLOAD_TRANSACTION
- GS_ALL_CONTROL_GROUP_INFO
- GS_CLUSTER_RESOURCE_INFO
- GS_INSTR_UNIQUE_SQL
- GS_REL_IOSTAT
- GS_NODE_STAT_RESET_TIME
- GS_SESSION_CPU_STATISTICS
- GS_SESSION_MEMORY_STATISTICS
- GS_SQL_COUNT
- GS_WAIT_EVENTS
- GS_WLM_OPERAROR_INFO
- GS_WLM_OPERATOR_HISTORY
- GS_WLM_OPERATOR_STATISTICS
- GS_WLM_SESSION_INFO
- GS_WLM_SESSION_HISTORY
- GS_WLM_SESSION_STATISTICS
- GS_WLM_SQL_ALLOW
- GS_WORKLOAD_SQL_COUNT
- GS_WORKLOAD_SQL_ELAPSE_TIME
- GS_WORKLOAD_TRANSACTION
- GS_STAT_DB_CU
- GS_STAT_SESSION_CU
- GS_TOTAL_NODEGROUP_MEMORY_DETAIL
- GS_USER_TRANSACTION
- GS_VIEW_DEPENDENCY
- GS_VIEW_DEPENDENCY_PATH
- GS_VIEW_INVALID
- PG_AVAILABLE_EXTENSION_VERSIONS
- PG_AVAILABLE_EXTENSIONS
- PG_BULKLOAD_STATISTICS
- PG_COMM_CLIENT_INFO
- PG_COMM_DELAY
- PG_COMM_STATUS
- PG_COMM_RECV_STREAM
- PG_COMM_SEND_STREAM
- PG_CONTROL_GROUP_CONFIG
- PG_CURSORS
- PG_EXT_STATS
- PG_GET_INVALID_BACKENDS
- PG_GET_SENDERS_CATCHUP_TIME
- PG_GROUP
- PG_INDEXES
- PG_JOB
- PG_JOB_PROC
- PG_JOB_SINGLE
- PG_LIFECYCLE_DATA_DISTRIBUTE
- PG_LOCKS
- PG_NODE_ENV
- PG_OS_THREADS
- PG_POOLER_STATUS
- PG_PREPARED_STATEMENTS
- PG_PREPARED_XACTS
- PG_QUERYBAND_ACTION
- PG_REPLICATION_SLOTS
- PG_ROLES
- PG_RULES
- PG_RUNNING_XACTS
- PG_SECLABELS
- PG_SESSION_WLMSTAT
- PG_SESSION_IOSTAT
- PG_SETTINGS
- PG_SHADOW
- PG_SHARED_MEMORY_DETAIL
- PG_STATS
- PG_STAT_ACTIVITY
- PG_STAT_ALL_INDEXES
- PG_STAT_ALL_TABLES
- PG_STAT_BAD_BLOCK
- PG_STAT_BGWRITER
- PG_STAT_DATABASE
- PG_STAT_DATABASE_CONFLICTS
- PG_STAT_GET_MEM_MBYTES_RESERVED
- PG_STAT_USER_FUNCTIONS
- PG_STAT_USER_INDEXES
- PG_STAT_USER_TABLES
- PG_STAT_REPLICATION
- PG_STAT_SYS_INDEXES
- PG_STAT_SYS_TABLES
- PG_STAT_XACT_ALL_TABLES
- PG_STAT_XACT_SYS_TABLES
- PG_STAT_XACT_USER_FUNCTIONS
- PG_STAT_XACT_USER_TABLES
- PG_STATIO_ALL_INDEXES
- PG_STATIO_ALL_SEQUENCES
- PG_STATIO_ALL_TABLES
- PG_STATIO_SYS_INDEXES
- PG_STATIO_SYS_SEQUENCES
- PG_STATIO_SYS_TABLES
- PG_STATIO_USER_INDEXES
- PG_STATIO_USER_SEQUENCES
- PG_STATIO_USER_TABLES
- PG_THREAD_WAIT_STATUS
- PG_TABLES
- PG_TDE_INFO
- PG_TIMEZONE_ABBREVS
- PG_TIMEZONE_NAMES
- PG_TOTAL_MEMORY_DETAIL
- PG_TOTAL_SCHEMA_INFO
- PG_TOTAL_USER_RESOURCE_INFO
- PG_USER
- PG_USER_MAPPINGS
- PG_VIEWS
- PG_WLM_STATISTICS
- PGXC_BULKLOAD_PROGRESS
- PGXC_BULKLOAD_STATISTICS
- PGXC_COMM_CLIENT_INFO
- PGXC_COMM_DELAY
- PGXC_COMM_RECV_STREAM
- PGXC_COMM_SEND_STREAM
- PGXC_COMM_STATUS
- PGXC_DEADLOCK
- PGXC_GET_STAT_ALL_TABLES
- PGXC_GET_STAT_ALL_PARTITIONS
- PGXC_GET_TABLE_SKEWNESS
- PGXC_GTM_SNAPSHOT_STATUS
- PGXC_INSTANCE_TIME
- PGXC_INSTR_UNIQUE_SQL
- PGXC_LOCK_CONFLICTS
- PGXC_NODE_ENV
- PGXC_NODE_STAT_RESET_TIME
- PGXC_OS_RUN_INFO
- PGXC_OS_THREADS
- PGXC_PREPARED_XACTS
- PGXC_REDO_STAT
- PGXC_REL_IOSTAT
- PGXC_REPLICATION_SLOTS
- PGXC_RUNNING_XACTS
- PGXC_SETTINGS
- PGXC_STAT_ACTIVITY
- PGXC_STAT_BAD_BLOCK
- PGXC_STAT_BGWRITER
- PGXC_STAT_DATABASE
- PGXC_STAT_REPLICATION
- PGXC_SQL_COUNT
- PGXC_THREAD_WAIT_STATUS
- PGXC_TOTAL_MEMORY_DETAIL
- PGXC_TOTAL_SCHEMA_INFO
- PGXC_TOTAL_SCHEMA_INFO_ANALYZE
- PGXC_USER_TRANSACTION
- PGXC_VARIABLE_INFO
- PGXC_WAIT_EVENTS
- PGXC_WLM_OPERATOR_HISTORY
- PGXC_WLM_OPERATOR_INFO
- PGXC_WLM_OPERATOR_STATISTICS
- PGXC_WLM_SESSION_INFO
- PGXC_WLM_SESSION_HISTORY
- PGXC_WLM_SESSION_STATISTICS
- PGXC_WLM_WORKLOAD_RECORDS
- PGXC_WORKLOAD_SQL_COUNT
- PGXC_WORKLOAD_SQL_ELAPSE_TIME
- PGXC_WORKLOAD_TRANSACTION
- PLAN_TABLE
- PLAN_TABLE_DATA
- PV_FILE_STAT
- PV_INSTANCE_TIME
- PV_OS_RUN_INFO
- PV_SESSION_MEMORY
- PV_SESSION_MEMORY_DETAIL
- PV_SESSION_STAT
- PV_SESSION_TIME
- PV_TOTAL_MEMORY_DETAIL
- PV_REDO_STAT
- REDACTION_COLUMNS
- REDACTION_POLICIES
- USER_COL_COMMENTS
- USER_CONSTRAINTS
- USER_CONS_COLUMNS
- USER_INDEXES
- USER_IND_COLUMNS
- USER_IND_EXPRESSIONS
- USER_IND_PARTITIONS
- USER_JOBS
- USER_OBJECTS
- USER_PART_INDEXES
- USER_PART_TABLES
- USER_PROCEDURES
- USER_SEQUENCES
- USER_SOURCE
- USER_SYNONYMS
- USER_TAB_COLUMNS
- USER_TAB_COMMENTS
- USER_TAB_PARTITIONS
- USER_TABLES
- USER_TRIGGERS
- USER_VIEWS
- V$SESSION
- V$SESSION_LONGOPS
- GUC参数
- 术语表
-
语法参考(吉隆坡地区)
- GaussDB(DWS) SQL
- GaussDB(DWS)与PostgreSQL的差异
- 关键字
- 数据类型
- 常量与宏
- 函数和操作符
- 表达式
- 类型转换
- 全文检索
- 系统操作
- 事务控制
-
DDL语法
- DDL语法一览表
- ALTER DATABASE
- ALTER FOREIGN TABLE (For GDS)
- ALTER FOREIGN TABLE (For HDFS or OBS)
- ALTER FUNCTION
- ALTER GROUP
- ALTER INDEX
- ALTER LARGE OBJECT
- ALTER REDACTION POLICY
- ALTER RESOURCE POOL
- ALTER ROLE
- ALTER ROW LEVEL SECURITY POLICY
- ALTER SCHEMA
- ALTER SEQUENCE
- ALTER SERVER
- ALTER SESSION
- ALTER SYNONYM
- ALTER SYSTEM KILL SESSION
- ALTER TABLE
- ALTER TABLE PARTITION
- ALTER TEXT SEARCH CONFIGURATION
- ALTER TEXT SEARCH DICTIONARY
- ALTER TRIGGER
- ALTER TYPE
- ALTER USER
- ALTER VIEW
- CLEAN CONNECTION
- CLOSE
- CLUSTER
- COMMENT
- CREATE BARRIER
- CREATE DATABASE
- CREATE FOREIGN TABLE (GDS导入导出)
- CREATE FOREIGN TABLE (SQL on OBS or Hadoop )
- CREATE FOREIGN TABLE (OBS导入导出)
- CREATE FUNCTION
- CREATE GROUP
- CREATE INDEX
- CREATE REDACTION POLICY
- CREATE ROW LEVEL SECURITY POLICY
- CREATE PROCEDURE
- CREATE RESOURCE POOL
- CREATE ROLE
- CREATE SCHEMA
- CREATE SEQUENCE
- CREATE SERVER
- CREATE SYNONYM
- CREATE TABLE
- CREATE TABLE AS
- CREATE TABLE PARTITION
- CREATE TABLESPACE
- CREATE TEXT SEARCH CONFIGURATION
- CREATE TEXT SEARCH DICTIONARY
- CREATE TRIGGER
- CREATE TYPE
- CREATE USER
- CREATE VIEW
- CURSOR
- DROP DATABASE
- DROP FOREIGN TABLE
- DROP FUNCTION
- DROP GROUP
- DROP INDEX
- DROP OWNED
- DROP REDACTION POLICY
- DROP ROW LEVEL SECURITY POLICY
- DROP PROCEDURE
- DROP RESOURCE POOL
- DROP ROLE
- DROP SCHEMA
- DROP SEQUENCE
- DROP SERVER
- DROP SYNONYM
- DROP TABLE
- DROP TABLESPACE
- DROP TEXT SEARCH CONFIGURATION
- DROP TEXT SEARCH DICTIONARY
- DROP TRIGGER
- DROP TYPE
- DROP USER
- DROP VIEW
- FETCH
- MOVE
- REINDEX
- RESET
- SET
- SET CONSTRAINTS
- SET ROLE
- SET SESSION AUTHORIZATION
- SHOW
- TRUNCATE
- VACUUM
- DML语法
- DCL语法
- DQL语法
- TCL语法
- GIN索引
-
工具指南(吉隆坡地区)
- 工具简介
- 客户端工具下载
- gsql命令行客户端工具
- Data Studio数据库集成开发工具
- GDS并行数据加载工具
- DSC SQL语法迁移工具
- 服务端工具
- 错误码参考(吉隆坡地区)
-
用户指南(阿布扎比区域)
- 性能白皮书
- 通用参考
链接复制成功!
表(Oracle)
CREATE TABLE
Oracle的CREATE TABLE语句用于创建表。GaussDB直接支持该语句,无需迁移
ALTER TABLE
Oracle的ALTER TABLE语句用于新增、重命名、修改或删除表列。GaussDB直接支持该语句,无需迁移。
PRIMARY KEY
Oracle中如果存在两张表具有相同的主键字段,则在执行ALTER TABLE时需加上表名进行区分。
输入:PRIMARY KEY
CREATE TABLE CTP_ARM_CONFIG ( HOSTNAME VARCHAR2(50), OPNAME VARCHAR2(50), PARAMTYPE VARCHAR2(2), PARAMVALUE NUMBER(*,0), MODIFYDATE DATE ) SEGMENT CREATION DEFERRED PCTFREE 10 PCTUSED 0 INITRANS 1 MAXTRANS 255 NOCOMPRESS LOGGING STORAGE( PCTINCREASE 0 BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT) TABLESPACE SPMS_DATA ; ALTER TABLE CTP_ARM_CONFIG ADD CONSTRAINT PKCTP_ARM_CONFIG PRIMARY KEY (HOSTNAME, OPNAME) USING INDEX PCTFREE 10 INITRANS 2 MAXTRANS 255 COMPUTE STATISTICS STORAGE( PCTINCREASE 0 BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT) TABLESPACE SPMS_DATA ENABLE;
输出
CREATE TABLE CTP_ARM_CONFIG ( HOSTNAME VARCHAR2 (50) ,OPNAME VARCHAR2 (50) ,PARAMTYPE VARCHAR2 (2) ,PARAMVALUE NUMBER ( 38 ,0 ) ,MODIFYDATE DATE ,CONSTRAINT PKCTP_ARM_CONFIG PRIMARY KEY ( HOSTNAME ,OPNAME ) ) /*SEGMENT CREATION DEFERRED*/ /*PCTFREE 10*/ /*PCTUSED 0*/ /*INITRANS 1*/ /*MAXTRANS 255*/ /*NOCOMPRESS*/ /*LOGGING*/ /*STORAGE( BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)*/ /*TABLESPACE SPMS_DATA */ ;
UNIQUE约束
以下ALTER TABLE语句包含约束,如果在GaussDB直接调用会报错:Cannot create index whose evaluation cannot be enforced to remote nodes.
该约束迁移和PRIMARY KEY类似。如果已有PRIMARY KEY/UNIQUE约束,无需迁移,保持原样。
输入
CREATE TABLE GCC_PLAN.T1033 ( ROLLOUT_PLAN_LINE_ID NUMBER NOT NULL ,UDF_FIELD_VALUE_ID NUMBER NOT NULL ) ; ALTER TABLE GCC_PLAN.T1033 ADD CONSTRAINT UDF_FIELD_VALUE_ID_PK UNIQUE (UDF_FIELD_VALUE_ID) ;
输出
CREATE TABLE GCC_PLAN.T1033 ( ROLLOUT_PLAN_LINE_ID NUMBER NOT NULL ,UDF_FIELD_VALUE_ID NUMBER NOT NULL ,CONSTRAINT UDF_FIELD_VALUE_ID_PK UNIQUE (UDF_FIELD_VALUE_ID) ) ;
NULL约束
在以下包中声明局部变量时不支持NULL约束:
L_CONTRACT_DISTRIBUTE_STATUS SAD_DISTRIBUTION_HEADERS_T.STATUS%TYPE NULL ;
输入
CREATE OR REPLACE FUNCTION CONTRACT_DISTRIBUTE_STATUS_S2(PI_CONTRACT_NUMBER IN VARCHAR2) RETURN VARCHAR2 IS L_CONTRACT_DISTRIBUTE_STATUS BAS_SUBTYPE_PKG.STATUS NULL; BEGIN FOR CUR_CONTRACT IN (SELECT HT.CONTRACT_STATUS FROM SAD_CONTRACTS_V HT WHERE HT.HTH = PI_CONTRACT_NUMBER) LOOP IF CUR_CONTRACT.CONTRACT_STATUS = 0 THEN L_CONTRACT_DISTRIBUTE_STATUS := 'Cancel'; ELSE L_CONTRACT_DISTRIBUTE_STATUS := BAS_SUBTYPE_PKG.G_HEADER_WAITING_SPLIT_STATUS; END IF; END LOOP; RETURN L_CONTRACT_DISTRIBUTE_STATUS; END CONTRACT_DISTRIBUTE_STATUS_S2; /
输出
CREATE OR REPLACE FUNCTION CONTRACT_DISTRIBUTE_STATUS_S2 ( PI_CONTRACT_NUMBER IN VARCHAR2 ) RETURN VARCHAR2 PACKAGE IS L_CONTRACT_DISTRIBUTE_STATUS BAS_SUBTYPE_PKG.STATUS /*NULL*/; BEGIN FOR CUR_CONTRACT IN ( SELECT HT.CONTRACT_STATUS FROM SAD_CONTRACTS_V HT WHERE HT.HTH = PI_CONTRACT_NUMBER ) LOOP IF CUR_CONTRACT.CONTRACT_STATUS = 0 THEN L_CONTRACT_DISTRIBUTE_STATUS := 'Cancel' ; ELSE L_CONTRACT_DISTRIBUTE_STATUS := BAS_SUBTYPE_PKG.G_HEADER_WAITING_SPLIT_STATUS ; END IF ; END LOOP ; RETURN L_CONTRACT_DISTRIBUTE_STATUS ; END ; /
未创建索引
如果ALTER TABLE中使用了INDEX或STORAGE参数,需要删掉。需要在CREATE TABLE中添加约束。
输入:PRIMARY KEY
CREATE TABLE CTP_ARM_CONFIG ( HOSTNAME VARCHAR2(50), OPNAME VARCHAR2(50), PARAMTYPE VARCHAR2(2), PARAMVALUE NUMBER(*,0), MODIFYDATE DATE ) SEGMENT CREATION DEFERRED PCTFREE 10 PCTUSED 0 INITRANS 1 MAXTRANS 255 NOCOMPRESS LOGGING STORAGE( PCTINCREASE 0 BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT) TABLESPACE SPMS_DATA ; ALTER TABLE CTP_ARM_CONFIG ADD CONSTRAINT PKCTP_ARM_CONFIG PRIMARY KEY (HOSTNAME, OPNAME) USING INDEX PCTFREE 10 INITRANS 2 MAXTRANS 255 COMPUTE STATISTICS STORAGE( PCTINCREASE 0 BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT) TABLESPACE SPMS_DATA ENABLE;
输出
CREATE TABLE CTP_ARM_CONFIG ( HOSTNAME VARCHAR2 (50) ,OPNAME VARCHAR2 (50) ,PARAMTYPE VARCHAR2 (2) ,PARAMVALUE NUMBER ( 38 ,0 ) ,MODIFYDATE DATE ,CONSTRAINT PKCTP_ARM_CONFIG PRIMARY KEY ( HOSTNAME ,OPNAME ) ) /*SEGMENT CREATION DEFERRED*/ /*PCTFREE 10*/ /*PCTUSED 0*/ /*INITRANS 1*/ /*MAXTRANS 255*/ /*NOCOMPRESS*/ /*LOGGING*/ /*STORAGE( BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)*/ /*TABLESPACE SPMS_DATA */ ;
分区
大表和索引的维护越来越耗费时间和资源。同时,这些对象会导致数据访问性能明显降低。表和索引的分区可从各方面提升性能、便于维护。
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DSC支持范围分区。
该工具不支持以下分区/子分区(在迁移脚本中会被注释掉):
- 列表分区
- Hash分区
- 范围子分区
- 列表子分区
- Hash子分区
未来可能会支持当前不支持的分区/子分区。该工具中,用户可设置配置参数,启用/禁用对不支持语句的注释功能。详情请参见Oracle配置参数。
- PARTITION BY HASH
Hash分区是一种分区技术,其中Hash算法用于在不同分区(子表)之间均匀分配行。通常在无法进行范围分区时使用该技术,例如通过员工ID、产品ID等进行分区。DSC不支持PARTITION BY HASH和SUBPARTITION BY HASH,且会注释掉这些语句。
输入:HASH PARTITION
CREATE TABLE dept (deptno NUMBER, deptname VARCHAR(32)) PARTITION BY HASH(deptno) PARTITIONS 16;
输出
CREATE TABLE dept ( deptno NUMBER ,deptname VARCHAR( 32 ) ) /* PARTITION BY HASH(deptno) PARTITIONS 16 */ ;
输入:HASH PARTITION,不使用分区名
CREATE TABLE dept (deptno NUMBER, deptname VARCHAR(32)) PARTITION BY HASH(deptno) PARTITIONS 16;
输出
CREATE TABLE dept (deptno NUMBER, deptname VARCHAR(32)) /* PARTITION BY HASH(deptno) PARTITIONS 16 */;
输入:HASH SUBPARTITION
CREATE TABLE sales ( prod_id NUMBER(6) , cust_id NUMBER , time_id DATE , channel_id CHAR(1) , promo_id NUMBER(6) , quantity_sold NUMBER(3) , amount_sold NUMBER(10,2) ) PARTITION BY RANGE (time_id) SUBPARTITION BY HASH (cust_id) SUBPARTITIONS 8STORE IN (ts1, ts2, ts3, ts4) ( PARTITION sales_q1_2006 VALUES LESS THAN (TO_DATE('01-APR-2006','dd-MON-yyyy')) , PARTITION sales_q2_2006 VALUES LESS THAN (TO_DATE('01-JUL-2006','dd-MON-yyyy')) , PARTITION sales_q3_2006 VALUES LESS THAN (TO_DATE('01-OCT-2006','dd-MON-yyyy')) , PARTITION sales_q4_2006 VALUES LESS THAN (TO_DATE('01-JAN-2007','dd-MON-yyyy')) );
输出CREATE TABLE sales ( prod_id NUMBER(6) , cust_id NUMBER , time_id DATE , channel_id CHAR(1) , promo_id NUMBER(6) , quantity_sold NUMBER(3) , amount_sold NUMBER(10,2) ) PARTITION BY RANGE (time_id) /*SUBPARTITION BY HASH (cust_id) SUBPARTITIONS 8 STORE IN (ts1, ts2, ts3, ts4) */ ( PARTITION sales_q1_2006 VALUES LESS THAN (TO_DATE('01-APR-2006','dd-MON-yyyy')) , PARTITION sales_q2_2006 VALUES LESS THAN (TO_DATE('01-JUL-2006','dd-MON-yyyy')) , PARTITION sales_q3_2006 VALUES LESS THAN (TO_DATE('01-OCT-2006','dd-MON-yyyy')) , PARTITION sales_q4_2006 VALUES LESS THAN (TO_DATE('01-JAN-2007','dd-MON-yyyy')) );
- PARTITION BY LIST
列表分区是一种分区技术,在每个分区的说明中指定分区键的离散值列表。DSC不支持PARTITION BY LIST和SUBPARTITION BY LIST,且会注释掉这些语句。
输入:LIST PARTITION
CREATE TABLE sales_by_region (item# INTEGER, qty INTEGER, store_name VARCHAR(30), state_code VARCHAR(2), sale_date DATE) STORAGE(INITIAL 10K NEXT 20K) TABLESPACE tbs5 PARTITION BY LIST (state_code) ( PARTITION region_east VALUES ('MA','NY','CT','NH','ME','MD','VA','PA','NJ') STORAGE (INITIAL 8M) TABLESPACE tbs8, PARTITION region_west VALUES ('CA','AZ','NM','OR','WA','UT','NV','CO') NOLOGGING, PARTITION region_south VALUES ('TX','KY','TN','LA','MS','AR','AL','GA'), PARTITION region_central VALUES ('OH','ND','SD','MO','IL','MI','IA'), PARTITION region_null VALUES (NULL), PARTITION region_unknown VALUES (DEFAULT) );
输出
CREATE UNLOGGED TABLE sales_by_region ( item# INTEGER ,qty INTEGER ,store_name VARCHAR( 30 ) ,state_code VARCHAR( 2 ) ,sale_date DATE ) TABLESPACE tbs5 /* PARTITION BY LIST(state_code)(PARTITION region_east VALUES('MA','NY','CT','NH','ME','MD','VA','PA','NJ') TABLESPACE tbs8, PARTITION region_west VALUES('CA','AZ','NM','OR','WA','UT','NV','CO') , PARTITION region_south VALUES('TX','KY','TN','LA','MS','AR','AL','GA'), PARTITION region_central VALUES('OH','ND','SD','MO','IL','MI','IA'), PARTITION region_null VALUES(NULL), PARTITION region_unknown VALUES(DEFAULT) ) */ ;
输入:LIST PARTITION(使用STORAGE参数)
CREATE TABLE store_master ( Store_id NUMBER , Store_address VARCHAR2 (40) , City VARCHAR2 (30) , State VARCHAR2 (2) , zip VARCHAR2 (10) , manager_id NUMBER ) /*TABLESPACE users*/ STORAGE ( INITIAL 100 k NEXT 100 k PCTINCREASE 0 ) PARTITION BY LIST (city) ( PARTITION south_florida VALUES ( 'MIA', 'ORL' ) /*TABLESPACE users*/ STORAGE ( INITIAL 100 k NEXT 100 k PCTINCREASE 0 ) , PARTITION north_florida VALUES ( 'JAC', 'TAM', 'PEN' ) /*TABLESPACE users*/ STORAGE ( INITIAL 100 k NEXT 100 k PCTINCREASE 0 ) , PARTITION south_georga VALUES ( 'BRU', 'WAY', 'VAL' ) /*TABLESPACE users*/ STORAGE ( INITIAL 100 k NEXT 100 k PCTINCREASE 0 ) , PARTITION north_georgia VALUES ( 'ATL', 'SAV', NULL ) );
输出
CREATE TABLE store_master ( Store_id NUMBER , Store_address VARCHAR2 (40) , City VARCHAR2 (30) , State VARCHAR2 (2) , zip VARCHAR2 (10) , manager_id NUMBER ) /*TABLESPACE users*/ STORAGE ( INITIAL 100 k NEXT 100 k );
输入:LIST PARTITION TABLE,基于其他TABLE
CREATE TABLE tab1_list PARTITION BY LIST (col1) ( partition part1 VALUES ( 1 ) , partition part2 VALUES ( 2, 3, 4 ) , partition part3 VALUES (DEFAULT) ) AS SELECT * FROM tab1;
输出
CREATE TABLE tab1_list AS ( SELECT * FROM tab1 );
输入:LIST PARTITION,使用SUBPARTITIONS
CREATE TABLE big_t_list PARTITION BY LIST(n10) (partition part1 VALUES (1) ,partition part2 VALUES (2,3,4) ,partition part3 VALUES (DEFAULT)) AS SELECT * FROM big_t;
输出
CREATE TABLE big_t_list /* PARTITION BY LIST(n10)(partition part1 VALUES(1) ,partition part2 VALUES(2,3,4) ,partition part3 VALUES(DEFAULT)) */ AS ( SELECT * FROM big_t ) ;
输入:LIST PARTITION,使用SUBPARTITION TEMPLATE
CREATE TABLE q1_sales_by_region ( deptno NUMBER , deptname varchar2 (20) , quarterly_sales NUMBER (10,2) , state varchar2 (2) ) PARTITION BY LIST (state) SUBPARTITION BY RANGE (quarterly_sales) SUBPARTITION TEMPLATE ( SUBPARTITION original VALUES LESS THAN (1001) , SUBPARTITION acquired VALUES LESS THAN (8001) , SUBPARTITION recent VALUES LESS THAN (MAXVALUE) ) ( PARTITION q1_northwest VALUES ( 'OR', 'WA' ) , PARTITION q1_southwest VALUES ( 'AZ', 'UT', 'NM' ) , PARTITION q1_northeast VALUES ( 'NY', 'VM', 'NJ' ) , PARTITION q1_southcentral VALUES ( 'OK', 'TX' ) );
输出
CREATE TABLE q1_sales_by_region ( deptno NUMBER , deptname varchar2 (20) , quarterly_sales NUMBER (10,2) , state varchar2 (2) );
- PARTITION BY RANGE
范围分区是一种分区技术,将不同范围数据分别存储在不同的子表中。当用户需要将不同范围的数据(例如日期字段)存储在一起时,范围分区很有用。DSC支持 PARTITION BY RANGE,不支持SUBPARTITION BY RANGE,且会注释掉该语句。
输入:RANGE PARTITION(使用STORAGE参数)
CREATE TABLE CCM_TA550002_H ( STRU_ID VARCHAR2 (10) ,ORGAN1_NO VARCHAR2 (10) ,ORGAN2_NO VARCHAR2 (10) ) partition BY range (ORGAN2_NO) ( partition CCM_TA550002_01 VALUES LESS than ('00100') /* TABLESPACE users */ /*pctfree 10*/ /*initrans 1*/ /*storage(initial 256 K NEXT 256 K minextents 1 maxextents unlimited )*/ ,partition CCM_TA550002_02 VALUES LESS than ('00200') /* TABLESPACE users */ /*pctfree 10*/ /*initrans 1*/ /* storage ( initial 256 K NEXT 256K minextents 1 maxextents unlimited pctincrease 0 )*/
输出
CREATE TABLE CCM_TA550002_H ( STRU_ID VARCHAR2 (10) , ORGAN1_NO VARCHAR2 (10) , ORGAN2_NO VARCHAR2 (10) ) partition BY range (ORGAN2_NO) ( partition CCM_TA550002_01 VALUES LESS than ('00100') /*TABLESPACE users*/ , partition CCM_TA550002_02 VALUES LESS than ('00200') /*TABLESPACE users*/ );
输入:RANGE PARTITION,使用SUBPARTITIONS
CREATE TABLE composite_rng_list ( cust_id NUMBER(10), cust_name VARCHAR2(25), cust_state VARCHAR2(2), time_id DATE) PARTITION BY RANGE(time_id) SUBPARTITION BY LIST (cust_state) SUBPARTITION TEMPLATE( SUBPARTITION west VALUES ('OR', 'WA') TABLESPACE part1, SUBPARTITION east VALUES ('NY', 'CT') TABLESPACE part2, SUBPARTITION cent VALUES ('OK', 'TX') TABLESPACE part3) ( PARTITION per1 VALUES LESS THAN (TO_DATE('01/01/2000','DD/MM/YYYY')), PARTITION per2 VALUES LESS THAN (TO_DATE('01/01/2005','DD/MM/YYYY')), PARTITION per3 VALUES LESS THAN (TO_DATE('01/01/2010','DD/MM/YYYY')), PARTITION future VALUES LESS THAN(MAXVALUE));
输出
CREATE TABLE composite_rng_list ( cust_id NUMBER(10), cust_name VARCHAR2(25), cust_state VARCHAR2(2), time_id DATE) PARTITION BY RANGE(time_id) /*SUBPARTITION BY LIST (cust_state) SUBPARTITION TEMPLATE( SUBPARTITION west VALUES ('OR', 'WA') TABLESPACE part1, SUBPARTITION east VALUES ('NY', 'CT') TABLESPACE part2, SUBPARTITION cent VALUES ('OK', 'TX') TABLESPACE part3)*/ ( PARTITION per1 VALUES LESS THAN (TO_DATE('01/01/2000','DD/MM/YYYY')), PARTITION per2 VALUES LESS THAN (TO_DATE('01/01/2005','DD/MM/YYYY')), PARTITION per3 VALUES LESS THAN (TO_DATE('01/01/2010','DD/MM/YYYY')), PARTITION future VALUES LESS THAN(MAXVALUE));
输入:RANGE PARTITION,使用SUBPARTITION TEMPLATECREATE TABLE composite_rng_rng ( cust_id NUMBER(10), cust_name VARCHAR2(25), cust_state VARCHAR2(2), time_id DATE) PARTITION BY RANGE(time_id) SUBPARTITION BY RANGE (cust_id) SUBPARTITION TEMPLATE( SUBPARTITION original VALUES LESS THAN (1001) TABLESPACE part1, SUBPARTITION acquired VALUES LESS THAN (8001) TABLESPACE part2, SUBPARTITION recent VALUES LESS THAN (MAXVALUE) TABLESPACE part3) ( PARTITION per1 VALUES LESS THAN (TO_DATE('01/01/2000','DD/MM/YYYY')), PARTITION per2 VALUES LESS THAN (TO_DATE('01/01/2005','DD/MM/YYYY')), PARTITION per3 VALUES LESS THAN (TO_DATE('01/01/2010','DD/MM/YYYY')), PARTITION future VALUES LESS THAN (MAXVALUE));
输出
CREATE TABLE composite_rng_rng ( cust_id NUMBER(10), cust_name VARCHAR2(25), cust_state VARCHAR2(2), time_id DATE) PARTITION BY RANGE(time_id) /*SUBPARTITION BY RANGE (cust_id) SUBPARTITION TEMPLATE( SUBPARTITION original VALUES LESS THAN (1001) TABLESPACE part1, SUBPARTITION acquired VALUES LESS THAN (8001) TABLESPACE part2, SUBPARTITION recent VALUES LESS THAN (MAXVALUE) TABLESPACE part3)*/ ( PARTITION per1 VALUES LESS THAN (TO_DATE('01/01/2000','DD/MM/YYYY')), PARTITION per2 VALUES LESS THAN (TO_DATE('01/01/2005','DD/MM/YYYY')), PARTITION per3 VALUES LESS THAN (TO_DATE('01/01/2010','DD/MM/YYYY')), PARTITION future VALUES LESS THAN (MAXVALUE));
分区表的PRIMARY KEY/UNIQUE约束
如果CREATE TABLE语句包含范围/Hash/列表分区,则添加约束会产生如下错误:
Invalid PRIMARY KEY/UNIQUE constraint for partitioned table
注意:PRIMARY KEY/UNIQUE约束所在的列必须包含PARTITION KEY。
脚本: wo_integrate_log_t.SQL, wo_change_log_t.SQL
输入:
create table SD_WO.WO_INTEGRATE_LOG_T ( LOG_ID NUMBER not null, PROJECT_NUMBER VARCHAR2(40), MESSAGE_ID VARCHAR2(100), BUSINESS_ID VARCHAR2(100), BUSINESS_TYPE VARCHAR2(100), INTEGRATE_CONTENT CLOB, OPERATION_RESULT VARCHAR2(100), FAILED_MSG VARCHAR2(4000), HOST_NAME VARCHAR2(100) not null, CREATED_BY NUMBER not null, CREATION_DATE DATE not null, LAST_UPDATED_BY NUMBER not null, LAST_UPDATE_DATE DATE not null, SOURCE_CODE VARCHAR2(100), TENANT_ID NUMBER ) partition by range (CREATION_DATE) ( partition P2018 values less than (TO_DATE(' 2018-10-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIAN')) tablespace SDWO_DATA, partition SYS_P53873 values less than (TO_DATE(' 2018-11-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIAN')) tablespace SDWO_DATA, partition SYS_P104273 values less than (TO_DATE(' 2018-12-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIAN')) tablespace SDWO_DATA, partition SYS_P105533 values less than (TO_DATE(' 2019-01-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIAN')) tablespace SDWO_DATA, partition SYS_P108153 values less than (TO_DATE(' 2019-02-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIAN')) tablespace SDWO_DATA, partition SYS_P127173 values less than (TO_DATE(' 2019-03-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIAN')) tablespace SDWO_DATA, partition SYS_P130313 values less than (TO_DATE(' 2019-04-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIAN')) tablespace SDWO_DATA ); alter table SD_WO.WO_INTEGRATE_LOG_T add constraint WO_INTEGRATE_LOG_PK primary key (LOG_ID); create index SD_WO.WO_INTEGRATE_LOG_N1 on SD_WO.WO_INTEGRATE_LOG_T (BUSINESS_ID); create index SD_WO.WO_INTEGRATE_LOG_N2 on SD_WO.WO_INTEGRATE_LOG_T (CREATION_DATE, BUSINESS_TYPE); create index SD_WO.WO_INTEGRATE_LOG_N3 on SD_WO.WO_INTEGRATE_LOG_T (PROJECT_NUMBER, BUSINESS_TYPE);
输出:
CREATE TABLE SD_WO.WO_INTEGRATE_LOG_T ( LOG_ID NUMBER NOT NULL ,PROJECT_NUMBER VARCHAR2 (40) ,MESSAGE_ID VARCHAR2 (100) ,BUSINESS_ID VARCHAR2 (100) ,BUSINESS_TYPE VARCHAR2 (100) ,INTEGRATE_CONTENT CLOB ,OPERATION_RESULT VARCHAR2 (100) ,FAILED_MSG VARCHAR2 (4000) ,HOST_NAME VARCHAR2 (100) NOT NULL ,CREATED_BY NUMBER NOT NULL ,CREATION_DATE DATE NOT NULL ,LAST_UPDATED_BY NUMBER NOT NULL ,LAST_UPDATE_DATE DATE NOT NULL ,SOURCE_CODE VARCHAR2 (100) ,TENANT_ID NUMBER ,CONSTRAINT WO_INTEGRATE_LOG_PK PRIMARY KEY (LOG_ID) ) partition BY range (CREATION_DATE) ( partition P2018 VALUES LESS than ( TO_DATE( ' 2018-10-01 00:00:00' ,'SYYYY-MM-DD HH24:MI:SS'/*, 'NLS_CALENDAR=GREGORIAN'*/ ) ) /* tablespace SDWO_DATA */ ,partition SYS_P53873 VALUES LESS than ( TO_DATE( ' 2018-11-01 00:00:00' ,'SYYYY-MM-DD HH24:MI:SS'/*, 'NLS_CALENDAR=GREGORIAN'*/ ) ) /* tablespace SDWO_DATA */ ,partition SYS_P104273 VALUES LESS than ( TO_DATE( ' 2018-12-01 00:00:00' ,'SYYYY-MM-DD HH24:MI:SS'/*, 'NLS_CALENDAR=GREGORIAN'*/ ) ) /* tablespace SDWO_DATA */ ,partition SYS_P105533 VALUES LESS than ( TO_DATE( ' 2019-01-01 00:00:00' ,'SYYYY-MM-DD HH24:MI:SS'/*, 'NLS_CALENDAR=GREGORIAN'*/ ) ) /* tablespace SDWO_DATA */ ,partition SYS_P108153 VALUES LESS than ( TO_DATE( ' 2019-02-01 00:00:00' ,'SYYYY-MM-DD HH24:MI:SS'/*, 'NLS_CALENDAR=GREGORIAN'*/ ) ) /* tablespace SDWO_DATA */ ,partition SYS_P127173 VALUES LESS than ( TO_DATE( ' 2019-03-01 00:00:00' ,'SYYYY-MM-DD HH24:MI:SS'/*, 'NLS_CALENDAR=GREGORIAN'*/ ) ) /* tablespace SDWO_DATA */ ,partition SYS_P130313 VALUES LESS than ( TO_DATE( ' 2019-04-01 00:00:00' ,'SYYYY-MM-DD HH24:MI:SS'/*, 'NLS_CALENDAR=GREGORIAN'*/ ) ) /* tablespace SDWO_DATA */ ) ; CREATE index WO_INTEGRATE_LOG_N1 ON SD_WO.WO_INTEGRATE_LOG_T (BUSINESS_ID) LOCAL ; CREATE index WO_INTEGRATE_LOG_N2 ON SD_WO.WO_INTEGRATE_LOG_T ( CREATION_DATE ,BUSINESS_TYPE ) LOCAL ; CREATE index WO_INTEGRATE_LOG_N3 ON SD_WO.WO_INTEGRATE_LOG_T ( PROJECT_NUMBER ,BUSINESS_TYPE ) LOCAL ;
输入:
create table SD_WO.WO_INTEGRATE_LOG_T ( LOG_ID NUMBER not null, PROJECT_NUMBER VARCHAR2(40), MESSAGE_ID VARCHAR2(100), BUSINESS_ID VARCHAR2(100), BUSINESS_TYPE VARCHAR2(100), INTEGRATE_CONTENT CLOB, OPERATION_RESULT VARCHAR2(100), FAILED_MSG VARCHAR2(4000), HOST_NAME VARCHAR2(100) not null, CREATED_BY NUMBER not null, CREATION_DATE DATE not null, LAST_UPDATED_BY NUMBER not null, LAST_UPDATE_DATE DATE not null, SOURCE_CODE VARCHAR2(100), TENANT_ID NUMBER ) partition by range (CREATION_DATE) ( partition P2018 values less than (TO_DATE(' 2018-10-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIAN')) tablespace SDWO_DATA, partition SYS_P53873 values less than (TO_DATE(' 2018-11-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIAN')) tablespace SDWO_DATA, partition SYS_P104273 values less than (TO_DATE(' 2018-12-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIAN')) tablespace SDWO_DATA, partition SYS_P105533 values less than (TO_DATE(' 2019-01-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIAN')) tablespace SDWO_DATA, partition SYS_P108153 values less than (TO_DATE(' 2019-02-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIAN')) tablespace SDWO_DATA, partition SYS_P127173 values less than (TO_DATE(' 2019-03-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIAN')) tablespace SDWO_DATA, partition SYS_P130313 values less than (TO_DATE(' 2019-04-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIAN')) tablespace SDWO_DATA ); alter table SD_WO.WO_INTEGRATE_LOG_T add constraint WO_INTEGRATE_LOG_PK primary key (LOG_ID); create index SD_WO.WO_INTEGRATE_LOG_N1 on SD_WO.WO_INTEGRATE_LOG_T (BUSINESS_ID); create index SD_WO.WO_INTEGRATE_LOG_N2 on SD_WO.WO_INTEGRATE_LOG_T (CREATION_DATE, BUSINESS_TYPE); create index SD_WO.WO_INTEGRATE_LOG_N3 on SD_WO.WO_INTEGRATE_LOG_T (PROJECT_NUMBER, BUSINESS_TYPE);
输出:
create table SD_WO.WO_INTEGRATE_LOG_T ( LOG_ID NUMBER not null, PROJECT_NUMBER VARCHAR2(40), MESSAGE_ID VARCHAR2(100), BUSINESS_ID VARCHAR2(100), BUSINESS_TYPE VARCHAR2(100), INTEGRATE_CONTENT CLOB, OPERATION_RESULT VARCHAR2(100), FAILED_MSG VARCHAR2(4000), HOST_NAME VARCHAR2(100) not null, CREATED_BY NUMBER not null, CREATION_DATE DATE not null, LAST_UPDATED_BY NUMBER not null, LAST_UPDATE_DATE DATE not null, SOURCE_CODE VARCHAR2(100), TENANT_ID NUMBER ) partition by range (CREATION_DATE) ( partition P2018 values less than (TO_DATE(' 2018-10-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIAN')) tablespace SDWO_DATA, partition SYS_P53873 values less than (TO_DATE(' 2018-11-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIAN')) tablespace SDWO_DATA, partition SYS_P104273 values less than (TO_DATE(' 2018-12-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIAN')) tablespace SDWO_DATA, partition SYS_P105533 values less than (TO_DATE(' 2019-01-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIAN')) tablespace SDWO_DATA, partition SYS_P108153 values less than (TO_DATE(' 2019-02-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIAN')) tablespace SDWO_DATA, partition SYS_P127173 values less than (TO_DATE(' 2019-03-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIAN')) tablespace SDWO_DATA, partition SYS_P130313 values less than (TO_DATE(' 2019-04-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIAN')) tablespace SDWO_DATA ); alter table SD_WO.WO_INTEGRATE_LOG_T add constraint WO_INTEGRATE_LOG_PK primary key (LOG_ID); create index SD_WO.WO_INTEGRATE_LOG_N1 on SD_WO.WO_INTEGRATE_LOG_T (BUSINESS_ID); create index SD_WO.WO_INTEGRATE_LOG_N2 on SD_WO.WO_INTEGRATE_LOG_T (CREATION_DATE, BUSINESS_TYPE); create index SD_WO.WO_INTEGRATE_LOG_N3 on SD_WO.WO_INTEGRATE_LOG_T (PROJECT_NUMBER, BUSINESS_TYPE);
数据类型
删除数据类型中的BYTE关键字。
Oracle语法 |
迁移后语法 |
---|---|
CREATE TABLE BL_ORACLE ( ID Number, Name VARCHAR2(100 BYTE), ADDRESS VARCHAR2(200 BYTE) ); |
CREATE TABLE TBL_ORACLE ( ID NUMBER ,Name VARCHAR2 (100) ,ADDRESS VARCHAR2 (200) ) ; |
分区(注释分区)
oracle配置参数中“#分区表唯一或主键约束”为“comment_partition”。
Oracle语法 |
迁移后语法 |
---|---|
CREATE TABLE TBL_ORACLE ( ID Number, Name VARCHAR2(100 BYTE), ADDRESS VARCHAR2(200 BYTE) ) TABLESPACE space1 PCTUSED 40 PCTFREE 0 INITRANS 1 MAXTRANS 255 NOLOGGING PARTITION BY RANGE (ID) ( PARTITION PART_2010 VALUES LESS THAN (10) NOLOGGING, PARTITION PART_2011 VALUES LESS THAN (20) NOLOGGING , PARTITION PART_2012 VALUES LESS THAN (MAXVALUE) NOLOGGING ) ENABLE ROW MOVEMENT; ALTER TABLE TBL_ORACLE ADD CONSTRAINT SAMPLE_PK PRIMARY KEY (ID); |
CREATE UNLOGGED TABLE TBL_ORACLE ( ID NUMBER ,Name VARCHAR2 (100) ,ADDRESS VARCHAR2 (200) ,CONSTRAINT SAMPLE_PK PRIMARY KEY (ID) ) TABLESPACE space1 /*PCTUSED 40*/ PCTFREE 0 INITRANS 1 MAXTRANS 255 /* PARTITION BY RANGE(ID)(PARTITION PART_2010 VALUES LESS THAN(10) , PARTITION PART_2011 VALUES LESS THAN(20) , PARTITION PART_2012 VALUES LESS THAN(MAXVALUE) ) ENABLE ROW MOVEMENT */ ; |
分区(注释约束)
oracle配置参数中“#分区表唯一或主键约束”为“comment_unique”。
Oracle语法 |
迁移后语法 |
---|---|
CREATE TABLE TBL_ORACLE ( ID Number, Name VARCHAR2(100 BYTE), ADDRESS VARCHAR2(200 BYTE) ) TABLESPACE space1 PCTUSED 40 PCTFREE 0 INITRANS 1 MAXTRANS 255 NOLOGGING PARTITION BY RANGE (ID) ( PARTITION PART_2010 VALUES LESS THAN (10) NOLOGGING, PARTITION PART_2011 VALUES LESS THAN (20) NOLOGGING , PARTITION PART_2012 VALUES LESS THAN (MAXVALUE) NOLOGGING ) ENABLE ROW MOVEMENT; ALTER TABLE TBL_ORACLE ADD CONSTRAINT SAMPLE_PK PRIMARY KEY (ID); |
CREATE UNLOGGED TABLE TBL_ORACLE ( ID NUMBER ,Name VARCHAR2 (100) ,ADDRESS VARCHAR2 (200) /*,CONSTRAINT SAMPLE_PK PRIMARY KEY (ID)*/ ) TABLESPACE space1 /*PCTUSED 40*/ PCTFREE 0 INITRANS 1 MAXTRANS 255 PARTITION BY RANGE (ID) ( PARTITION PART_2010 VALUES LESS THAN (10) ,PARTITION PART_2011 VALUES LESS THAN (20) ,PARTITION PART_2012 VALUES LESS THAN (MAXVALUE) ) ENABLE ROW MOVEMENT ; |
分区(一)
在非分区表中,为表“ALTER TABLE TRUNCATE PARTITION”添加注释。
Oracle语法 |
迁移后语法 |
---|---|
CREATE TABLE product_range ( product_id VARCHAR2(20), Product_Name VARCHAR2(50), Year_Manufacture DATE ) partition by range (Year_Manufacture) ( partition Year_Manufacture values less than (TO_DATE(' 2007-01-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS')) pctfree 10 initrans 1 ); CREATE TABLE product_list ( product_id VARCHAR2(20), Product_Name VARCHAR2(50), Year_Manufacture vARCHAR2(10) ) partition by list (Year_Manufacture) ( partition P_2020 VALUES (2020) pctfree 10 initrans 1 ); CREATE OR REPLACE PROCEDURE Range_test IS V_ID VARCHAR2(10); BEGIN EXECUTE IMMEDIATE 'ALTER TABLE product TRUNCATE PARTITION PART'||V_ID; NULL; END; / CREATE OR REPLACE PROCEDURE List_test IS V_ID VARCHAR2(10); BEGIN EXECUTE IMMEDIATE 'ALTER TABLE product TRUNCATE PARTITION PART'||V_ID; NULL; END; / |
CREATE TABLE product_range ( product_id VARCHAR2(20), Product_Name VARCHAR2(50), Year_Manufacture DATE ) partition by range (Year_Manufacture) ( partition Year_Manufacture values less than (TO_DATE(' 2007-01-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS')) pctfree 10 initrans 1 ); CREATE TABLE product_list ( product_id VARCHAR2(20), Product_Name VARCHAR2(50), Year_Manufacture vARCHAR2(10) ) /*partition by list (Year_Manufacture) ( partition P_2020 VALUES (2020) pctfree 10 initrans 1 )*/; CREATE OR REPLACE PROCEDURE Range_test IS V_ID VARCHAR2(10); BEGIN EXECUTE IMMEDIATE 'ALTER TABLE product TRUNCATE PARTITION PART'||V_ID; NULL; END; / CREATE OR REPLACE PROCEDURE List_test IS V_ID VARCHAR2(10); BEGIN /*EXECUTE IMMEDIATE 'ALTER TABLE product TRUNCATE PARTITION PART'||V_ID;*/ NULL; END; / |
分区(二)
在非分区表中,删除表“ALTER TABLE TRUNCATE PARTITION”中的数据。
Oracle语法 |
迁移后语法 |
---|---|
CREATE TABLE product_list ( product_id VARCHAR2(20), Product_Name VARCHAR2(50), Year_Manufacture vARCHAR2(10) ) partition by list (Year_Manufacture) ( partition PART_2015 VALUES (2011,2012,2013,2014,2015) pctfree 10 initrans 1 , partition PART_2016 VALUES (2016) pctfree 10 initrans 1 , partition PART_2017 VALUES (2017) pctfree 10 initrans 1 , partition PART_2018 VALUES (2018) pctfree 10 initrans 1 , partition PART_2019 VALUES (2019) pctfree 10 initrans 1 , partition PART_2020 VALUES (2020) pctfree 10 initrans 1 , PARTITION PART_unknown VALUES (DEFAULT) ); CREATE OR REPLACE PROCEDURE List_test IS V_ID VARCHAR2(10); BEGIN EXECUTE IMMEDIATE 'ALTER TABLE product_list TRUNCATE PARTITION PART_2020; NULL; END; / CREATE OR REPLACE PROCEDURE List_test IS V_ID VARCHAR2(10); BEGIN EXECUTE IMMEDIATE 'ALTER TABLE product_list TRUNCATE PARTITION PART_' || V_ID; NULL; END; / |
CREATE TABLE product_list ( product_id VARCHAR2(20), Product_Name VARCHAR2(50), Year_Manufacture vARCHAR2(10) ) /*partition by list (Year_Manufacture) ( partition PART_2015 VALUES (2011,2012,2013,2014,2015) pctfree 10 initrans 1 , partition PART_2016 VALUES (2016) pctfree 10 initrans 1 , partition PART_2017 VALUES (2017) pctfree 10 initrans 1 , partition PART_2018 VALUES (2018) pctfree 10 initrans 1 , partition PART_2019 VALUES (2019) pctfree 10 initrans 1 , partition PART_2020 VALUES (2020) pctfree 10 initrans 1 , PARTITION PART_unknown VALUES (DEFAULT) )*/; CREATE OR REPLACE PROCEDURE List_test IS V_ID VARCHAR2(10); BEGIN EXECUTE IMMEDIATE 'ALTER TABLE product_list TRUNCATE PARTITION PART_' || V_ID; NULL; END; / CREATE OR REPLACE PROCEDURE List_test IS V_ID VARCHAR2(10); BEGIN /* EXECUTE IMMEDIATE 'ALTER TABLE product_list TRUNCATE PARTITION PART_' || V_ID; */ IF 'PART_' || V_ID = 'PART_2015' THEN DELETE FROM product_list WHERE Year_Manufacture IN (2011,2012,2013,2014,2015); ELSIF 'PART_' || V_ID = 'PART_2016' THEN DELETE FROM product_list WHERE Year_Manufacture IN (2016); ELSIF 'PART_' || V_ID = 'PART_2017' THEN DELETE FROM product_list WHERE Year_Manufacture IN (2017); ELSIF 'PART_' || V_ID = 'PART_2018' THEN DELETE FROM product_list WHERE Year_Manufacture IN (2018); ELSIF 'PART_' || V_ID = 'PART_2019' THEN DELETE FROM product_list WHERE Year_Manufacture IN (2019); ELSIF 'PART_' || V_ID = 'PART_2020' THEN DELETE FROM product_list WHERE Year_Manufacture IN (2020); ELSE DELETE FROM product_list WHERE Year_Manufacture NOT IN (2011,2012,2013,2014,2015,2016,2017,2018,2019,2020); END IF; NULL; END; / |
SEGMENT CREATION
GaussDB不支持SEGMENT CREATION { IMMEDIATE | DEFERRED },因此该语句在迁移后被注释掉,需要设置commentStorageParameter=true。
输入:TABLE,使用SEGMENT CREATION
CREATE TABLE T1 ( MESSAGE_CODE VARCHAR2(50), MAIL_TITLE VARCHAR2(1000), MAIL_BODY VARCHAR2(1000), MAIL_ADDRESS VARCHAR2(1000), MAIL_ADDRESS_CC VARCHAR2(1000) ) SEGMENT CREATION DEFERRED PCTFREE 10 PCTUSED 0 INITRANS 1 MAXTRANS 255 NOCOMPRESS LOGGING STORAGE( INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645 PCTINCREASE 0 BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT) TABLESPACE Test ;
输出:
CREATE TABLE T1 ( MESSAGE_CODE VARCHAR2(50), MAIL_TITLE VARCHAR2(1000), MAIL_BODY VARCHAR2(1000), MAIL_ADDRESS VARCHAR2(1000), MAIL_ADDRESS_CC VARCHAR2(1000) ) /*SEGMENT CREATION DEFERRED */ /*PCTFREE 10*/ /* PCTUSED 0 */ /*INITRANS 1 */ /*MAXTRANS 255 */ /* NOCOMPRESS LOGGING*/ /* STORAGE( INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645 PCTINCREASE 0 BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)*/ /* TABLESPACE Test */;
STORAGE
GaussDB不支持BUFFER_POOL、MAXEXTENTS等存储参数。如果commment_storage_parameter设置为true,出现在表或索引中的这些参数在迁移时会被注释掉。
输入:TABLE,使用STORAGE
CREATE UNIQUE INDEX PK_BASE_APPR_STEP_DEF ON BASE_APPR_STEP_DEF (FLOW_ID, NODE_ID, STEP_ID) PCTFREE 10 INITRANS 2 MAXTRANS 255 COMPUTE STATISTICS STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645 PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT) TABLESPACE SPMS_DATA ; CREATE TABLE UFP_MAIL ( MAIL_ID NUMBER(*,0), MAIL_TITLE VARCHAR2(1000), MAIL_BODY VARCHAR2(4000), STATUS VARCHAR2(50), CREATE_TIME DATE, SEND_TIME DATE, MAIL_ADDRESS CLOB, MAIL_CC CLOB, BASE_ID VARCHAR2(20), BASE_STATUS VARCHAR2(50), BASE_VERIFY VARCHAR2(20), BASE_LINK VARCHAR2(4000), MAIL_TYPE VARCHAR2(20), BLIND_COPY_TO CLOB, FILE_NAME VARCHAR2(4000), FULL_FILEPATH VARCHAR2(4000) ) SEGMENT CREATION IMMEDIATE PCTFREE 10 PCTUSED 0 INITRANS 1 MAXTRANS 255 NOCOMPRESS LOGGING STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645 PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT) TABLESPACE SPMS_DATA LOB (MAIL_ADDRESS) STORE AS BASICFILE ( TABLESPACE SPMS_DATA ENABLE STORAGE IN ROW CHUNK 8192 RETENTION NOCACHE LOGGING STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645 PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)) LOB (MAIL_CC) STORE AS BASICFILE ( TABLESPACE SPMS_DATA ENABLE STORAGE IN ROW CHUNK 8192 RETENTION NOCACHE LOGGING STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645 PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)) LOB (BLIND_COPY_TO) STORE AS BASICFILE ( TABLESPACE SPMS_DATA ENABLE STORAGE IN ROW CHUNK 8192 RETENTION NOCACHE LOGGING STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645 PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)) ;
输出
CREATE UNIQUE INDEX PK_BASE_APPR_STEP_DEF ON BASE_APPR_STEP_DEF ( FLOW_ID ,NODE_ID ,STEP_ID ) /*PCTFREE 10*/ /*INITRANS 2*/ /*MAXTRANS 255*/ /*COMPUTE STATISTICS*/ /*STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)*/ /*TABLESPACE SPMS_DATA */ ;
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如果commment_storage_parameter设为true,存储参数会被注释掉。
STORE
Gauss不支持LOB列的STORE关键字,因此该关键字在迁移后会被注释掉。
输入:TABLE,使用STORE
CREATE TABLE CTP_PROC_LOG ( PORC_NAME VARCHAR2(100), LOG_TIME VARCHAR2(100), LOG_INFO CLOB ) SEGMENT CREATION IMMEDIATE PCTFREE 10 PCTUSED 0 INITRANS 1 MAXTRANS 255 NOCOMPRESS LOGGING STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645 PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT) TABLESPACE SPMS_DATA LOB (LOG_INFO) STORE AS BASICFILE ( TABLESPACE SPMS_DATA ENABLE STORAGE IN ROW CHUNK 8192 RETENTION NOCACHE LOGGING STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645 PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)) ;
输出:
CREATE TABLE CTP_PROC_LOG ( PORC_NAME VARCHAR2 (100) ,LOG_TIME VARCHAR2 (100) ,LOG_INFO CLOB ) /*SEGMENT CREATION IMMEDIATE*/ /*PCTFREE 10*/ /*PCTUSED 0*/ /*INITRANS 1*/ /*MAXTRANS 255*/ /*NOCOMPRESS*/ /*LOGGING*/ /*STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)*/ /*TABLESPACE SPMS_DATA */ /*LOB (LOG_INFO) STORE AS BASICFILE ( TABLESPACE SPMS_DATA ENABLE STORAGE IN ROW CHUNK 8192 RETENTION NOCACHE LOGGING STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT))*/ ;
PCTINCREASE
所有表均不支持存储参数PCTINCREASE。此外,分区表不支持所有存储参数(包括pctfree、minextents和 maxextents)。
输入:TABLE,使用PCTINCREASE
CREATE TABLE tab1 ( col1 < datatype > , col2 < datatype > , ... , colN < datatype > ) TABLESPACE testts PCTFREE 10 INITRANS 1 MAXTRANS 255 /* STORAGE ( INITIAL 5 M NEXT 5 M MINEXTENTS 1 MAXEXTENTS UNLIMITED PCTINCREASE 0 );*/
输出:
CREATE TABLE tab1 ( col1 < datatype > , col2 < datatype > , ... , colN < datatype > ) TABLESPACE testts PCTFREE 10 INITRANS 1 MAXTRANS 255 /* STORAGE ( INITIAL 5 M NEXT 5 M MINEXTENTS 1 MAXEXTENTS UNLIMITED );*/
外键
外键在Oracle数据库中用于强制保证引用的完整性。外键意味着一个表中的值必须同时存在另一个表中。被引用的表称为父表,而包含外键的表称为子表。子表中的外键通常会引用父表中的主键。可以在CREATE TABLE或ALTER TABLE语句中定义外键。
必须通过REFERENCE子句建立外键约束。内联约束子句是列定义子句或对象属性子句的一部分。外联约束是关系属性子句或对象属性子句中的一部分。
如果参数foreignKeyHandler设置为true(默认值),工具将这些语句迁移为注释语句。
DSC支持内联和外联外键约束,如下所示。
输入:CREATE TABLE,使用外键和内联约束
CREATE TABLE orders ( order_no INT NOT NULL PRIMARY KEY, order_date DATE NOT NULL, cust_id INT [CONSTRAINT fk_orders_cust] REFERENCES customers(cust_id) [ON DELETE SET NULL] [INITIALLY DEFERRED] [ENABLE NOVALIDATE] );
输出:
CREATE TABLE orders ( order_no INT NOT NULL PRIMARY KEY, order_date DATE NOT NULL, cust_id INT /* [CONSTRAINT fk_orders_cust] REFERENCES customers(cust_id) [ON DELETE SET NULL] [INITIALLY DEFERRED] [ENABLE NOVALIDATE] */ );
输入:CREATE TABLE,使用外键和外联约束
CREATE TABLE customers ( cust_id INT NOT NULL, cust_name VARCHAR(64) NOT NULL, cust_addr VARCHAR(256), cust_contact_no VARCHAR(16), PRIMARY KEY (cust_id) ); CREATE TABLE orders ( order_no INT NOT NULL, order_date DATE NOT NULL, cust_id INT NOT NULL, PRIMARY KEY (order_no), CONSTRAINT fk_orders_cust FOREIGN KEY (cust_id) REFERENCES customers(cust_id) ON DELETE CASCADE );
输出:
CREATE TABLE customers ( cust_id INT NOT NULL, cust_name VARCHAR(64) NOT NULL, cust_addr VARCHAR(256), cust_contact_no VARCHAR(16), PRIMARY KEY (cust_id) ); CREATE TABLE orders ( order_no INT NOT NULL, order_date DATE NOT NULL, cust_id INT NOT NULL, PRIMARY KEY (order_no) /*, CONSTRAINT fk_orders_cust FOREIGN KEY (cust_id) REFERENCES customers(cust_id) ON DELETE CASCADE */ );
LONG数据类型
定义为LONG的列可存储变长字符数据,最多可包含2GB信息。MT支持表结构和PL/SQL中的LONG数据类型。
输入:在表结构中使用LONG数据类型
CREATE TABLE project ( proj_cd INT , proj_name VARCHAR2(32) , dept_no INT , proj_det LONG );
输出:
CREATE TABLE project ( proj_cd INT , proj_name VARCHAR2(32) , dept_no INT , proj_det TEXT );
输入:在PL/SQL中使用LONG数据类型
CREATE OR REPLACE FUNCTION fn_proj_det ( i_proj_cd INT ) RETURN LONG IS v_proj_det LONG; BEGIN SELECT proj_det INTO v_proj_det FROM project WHERE proj_cd = i_proj_cd; RETURN v_proj_det; END; /
输出:
CREATE OR REPLACE FUNCTION fn_proj_det ( i_proj_cd INT ) RETURN TEXT IS v_proj_det TEXT; BEGIN SELECT proj_det INTO v_proj_det FROM project WHERE proj_cd = i_proj_cd; RETURN v_proj_det; END; /
TYPE
将“MDSYS.MBRCOORDLIST”替换为“CLOB”。
Oracle语法 |
迁移后语法 |
---|---|
create table product_part ( partid VARCHAR2(24), mbrcoords MDSYS.MBRCOORDLIST ); |
CREATE TABLE product_part ( partid VARCHAR2(24), mbrcoords CLOB ); |
将“MDSYS.SDO_GEOMETRY”替换为“CLOB”。
Oracle语法 |
迁移后语法 |
---|---|
create table product_part ( partid VARCHAR2(24), shape MDSYS.SDO_GEOMETRY ); |
CREATE TABLE product_part ( partid VARCHAR2(24), shape CLOB ); |
将“MDSYS.GEOMETRY”为“CLOB”。
Oracle语法 |
迁移后语法 |
---|---|
create table product_part ( partid VARCHAR2(24), shape GEOMETRY ); |
CREATE TABLE product_part ( partid VARCHAR2(24), shape CLOB ); |
列
xmax、xmin、left、right、maxvalue为Gauss关键字,这些关键字应全字母大写并加英文双引号("")。
Oracle语法 |
迁移后语法 |
---|---|
create table product ( xmax VARCHAR2(20), xmin VARCHAR2(50), left VARCHAR2(50), right VARCHAR2(50), maxvalue VARCHAR2(50) ); |
CREATE TABLE product1 ( "XMAX" VARCHAR2(20), "XMIN" VARCHAR2(50), "LEFT" VARCHAR2(50), "RIGHT" VARCHAR2(50), "MAXVALUE" VARCHAR2(50) ); |
间隔分区
对于间隔分区,应该注释分区。
Oracle语法 |
迁移后语法 |
---|---|
create table product ( product_id VARCHAR2(20), product_name VARCHAR2(50), manufacture_month DATE ) partition by range (manufacture_month) interval (NUMTODSINTERVAL (1, 'MONTH')) ( partition T_PARTITION_2018_11_LESS values less than (TO_DATE(' 2018-11-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS'))); |
CREATE TABLE product ( product_id VARCHAR2(20), product_name VARCHAR2(50), manufacture_month DATE ) /*partition by range (manufacture_month) interval (NUMTODSINTERVAL (1, 'MONTH')) ( partition T_PARTITION_2018_11_LESS values less than (TO_DATE(' 2018-11-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS')))*/; |