更新时间:2024-07-03 GMT+08:00
获取帮助
操作步骤
- 连接数据库时,可以使用如下命令获取帮助信息。
gsql --help
显示如下帮助信息:
...... Usage: gsql [OPTION]... [DBNAME [USERNAME]] General options: -c, --command=COMMAND run only single command (SQL or internal) and exit -d, --dbname=DBNAME database name to connect to (default: "omm") -f, --file=FILENAME execute commands from file, then exit ......
- 连接到数据库后,可以使用如下命令获取帮助信息。
help
显示如下帮助信息:
You are using gsql, the command-line interface to gaussdb. Type: \copyright for distribution terms \h for help with SQL commands \? for help with gsql commands \g or terminate with semicolon to execute query \q to quit
任务示例
- 查看gsql的帮助信息。具体执行命令请参见表1。
表1 使用gsql联机帮助 描述
示例
查看版权信息
\copyright
查看GaussDB支持的SQL语句的帮助
查看GaussDB支持的SQL语句的帮助
例如,查看GaussDB支持的所有SQL语句:
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openGauss=# \h Available help: ABORT ALTER AGGREGATE ALTER APP WORKLOAD GROUP ... ...
例如,查看CREATE DATABASE命令的参数可使用下面的命令:
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openGauss=# \help CREATE DATABASE Command: CREATE DATABASE Description: create a new database Syntax: CREATE DATABASE database_name [ [ WITH ] {[ OWNER [=] user_name ]| [ TEMPLATE [=] template ]| [ ENCODING [=] encoding ]| [ LC_COLLATE [=] lc_collate ]| [ LC_CTYPE [=] lc_ctype ]| [ DBCOMPATIBILITY [=] compatibility_type ]| [ TABLESPACE [=] tablespace_name ]| [ CONNECTION LIMIT [=] connlimit ]}[...] ];
查看gsql命令的帮助
例如,查看gsql支持的命令:
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openGauss=# \? General \copyright show openGauss usage and distribution terms \g [FILE] or ; execute query (and send results to file or |pipe) \h(\help) [NAME] help on syntax of SQL commands, * for all commands \q quit gsql ... ...
父主题: gsql客户端参考