ALTER DATABASE name [ [ WITH ] option [ ... ] ] 这里 option 可以是: ALLOW_CONNECTIONS allowconn CONNECTION LIMIT connlimit IS_TEMPLATE istemplate ALTER DATABASE name RENAME TO new_name ALTER DATABASE name OWNER TO { new_owner | CURRENT_USER | SESSION_USER } ALTER DATABASE name SET TA...
ALTER DATABASE <dbname> SET configuration_parameter { TO | = } { value | DEFAULT } ALTER DATABASE <dbname> SET configuration_parameter FROM CURRENT ALTER DATABASE <dbname> RESET configuration_parameter ALTER DATABASE <dbname> RESET ALL 参数说明如下表所示。 参数 描述 configuration_parameter Hologre...
ALTER DATABASE name [ [ WITH ] option [ ... ] ] 这里option 可以是: ALLOW_CONNECTIONS allowconn CONNECTION LIMIT connlimit IS_TEMPLATE istemplate ALTER DATABASE name RENAME TO new_name ALTER DATABASE name OWNER TO { new_owner | CURRENT_USER | SESSION_USER } ALTER DATABASE name SET TABL...
ALTER DATABASE name [ [ WITH ] option [ ... ] ] 这里option 可以是以下参数: CONNECTION LIMIT connlimit ALTER DATABASE name RENAME TO new_name ALTER DATABASE name OWNER TO new_owner ALTER DATABASE name SET TABLESPACE new_tablespace ALTER DATABASE name SET configuration_parameter { TO | =...
ALTER DATABASE testdb2 RENAME TO testhrdb; Third, execute the following statement to change the owner of the testhrdbdatabase from postgresto hr, with the assumption that the hr role already exists. ALTER DATABASE testhrdb OWNER TO hr; If the hr role does not exist, you can create it ...
ALTERDATABASEpostgresSET"plv8.start_proc"TO"v8.plv8_init"; 说明 默认我们需要在建立连接的时候配置,一般如下: SETplv8.start_proc='v8.plv8_init'; 通过ALTER DATABASE postgres SET 我们就为每个session 配置了自动的变量,不需要代码调整了。
Whenever a new session is subsequently started in that database, the specified value becomes the session default value. The database-specific default overrides whatever setting is present in postgresql.conf or has been received from the postgres command line. Only the database owner or a super...
一、概述 AlterRoleSet 在 He3DB 中允许你为特定角色设置默认的会话参数。这个功能能够使角色在连接数据库时自动应用某些参数配置。 二、AlterRoleSet 命令的执行流程 PostgresMain exec_simple_query →执行简单的 SQL 查询; StartTra
使用ALTER命令在表中添加多列可以通过以下步骤完成: 1. 首先,使用ALTER TABLE语句指定要修改的表名。 2. 使用ADD关键字指定要添加的列。 3. 在ADD关键字后面,按照需要添加的...
ALTER USER modifies the attributes of a database user.Session parameters modified by ALTER USER apply to the specified user and take effect in the next session.Modify use