import android.util.Log; import android.view.MotionEvent; import android.view.View; import android.widget.Button; import android.widget.TextView;

查看更多 →

CREATE VIEW 本章节介绍如何在ClickHouse中创建普通视图。 创建视图 CREATE VIEW [IF NOT EXISTS] [db.]view_name [ON CLUSTER ClickHouse集群名] AS SELECT ... 表1 参数说明 参数 说明

查看更多 →

--创建视图a_view，这里视图不存在，相当于新建视图。 gaussdb=# CREATE OR REPLACE VIEW a_view AS SELECT * FROM a; --查看视图a_view。 gaussdb=# SELECT * FROM a_view; c1 |

查看更多 →

1 2 ALTER VIEW [ IF EXISTS ] view_name SET SCHEMA new_schema; 设置视图的选项。 1 2 ALTER VIEW [ IF EXISTS ] view_name SET ( { view_option_name

查看更多 →

REPLACE ] [ TEMP | TEMPORARY ] VIEW view_name [ ( column_name [, ...] ) ] [ WITH ( {view_option_name [= view_option_value]} [, ... ] ) ]

查看更多 →

设置视图的所属模式。 ALTER VIEW [ IF EXISTS ] view_name SET SCHEMA new_schema; 设置视图的选项。 ALTER VIEW [ IF EXISTS ] view_name SET ( { view_option_name

查看更多 →

EXISTS ] view_name SET SCHEMA new_schema; 设置视图的选项。 1 2 ALTER VIEW [ IF EXISTS ] view_name SET ( { view_option_name [ = view_option_value

查看更多 →

1 2 ALTER VIEW [ IF EXISTS ] view_name SET SCHEMA new_schema; 设置视图的选项。 1 2 ALTER VIEW [ IF EXISTS ] view_name SET ( { view_option_name

查看更多 →

取值范围：字符串，符合标识符命名规范。 view_option_name [= view_option_value] 该子句为视图指定一个可选的参数。 目前view_option_name支持的参数仅有security_barrier，当VIEW试图提供行级安全时，应使用该参数。 取

查看更多 →

REPLACE ] [ TEMP | TEMPORARY ] VIEW view_name [ ( column_name [, ...] ) ] [ WITH ( {view_option_name [= view_option_value]} [, ... ] ) ]

查看更多 →

REPLACE ] [ TEMP | TEMPORARY ] VIEW view_name [ ( column_name [, ...] ) ] [ WITH ( {view_option_name [= view_option_value]} [, ... ] ) ]

查看更多 →

设置视图的所属模式。 ALTER VIEW [ IF EXISTS ] view_name SET SCHEMA new_schema; 设置视图的选项。 ALTER VIEW [ IF EXISTS ] view_name SET ( { view_option_name

查看更多 →

EXISTS ] view_name SET SCHEMA new_schema; 设置视图的选项。 1 2 ALTER VIEW [ IF EXISTS ] view_name SET ( { view_option_name [ = view_option_value

查看更多 →

SELECT VIEW CONTENT 语法 SELECT column_name FROM view_name 描述 查询视图内容 SELECT * FROM test_view; 父主题： DQL 语法

查看更多 →

REPLACE ] [ TEMP | TEMPORARY ] VIEW view_name [ ( column_name [, ...] ) ] [ WITH ( {view_option_name [= view_option_value]} [, ... ] ) ]

查看更多 →

CREATE VIEW 语法 CREATE [ OR REPLACE ] VIEW view_name [(column_name [COMMENT 'column_comment'][, ...])] [COMMENT 'view_comment'] [TBLPROPERTIES

查看更多 →

ALTER VIEW 语法 ALTER VIEW view_name AS select_statement; ALTER VIEW view_name SET TBLPROPERTIES table_properties; 描述 “ALTER VIEW view_name AS

查看更多 →

SELECT VIEW CONTENT 语法 SELECT column_name FROM view_name 描述 用于查询视图内容。 示例 SELECT * FROM test_view; 父主题： HetuEngine DQL SQL语法说明

查看更多 →

REPLACE ] [ TEMP | TEMPORARY ] VIEW view_name [ ( column_name [, ...] ) ] [ WITH ( {view_option_name [= view_option_value]} [, ... ] ) ]

查看更多 →

--创建视图a_view，这里视图不存在，相当于新建视图。 gaussdb=# CREATE OR REPLACE VIEW a_view AS SELECT * FROM a; --查看视图a_view。 gaussdb=# SELECT * FROM a_view; c1 |

查看更多 →

1 2 ALTER VIEW [ IF EXISTS ] view_name SET SCHEMA new_schema; 设置视图的选项。 1 2 ALTER VIEW [ IF EXISTS ] view_name SET ( { view_option_name

查看更多 →