Users with superuser privileges have full control over the PostgreSQL instance, so it's crucial to monitor and limit superuser access as much as possible.
*postgres=#CREATETABLESPACE my_tablespace LOCATION'/opt/PostgreSQL/9.1/mydata';*CREATETABLESPACE--2. 将新建表空间的CREATE权限赋予public。*postgres=#GRANTCREATEONTABLESPACE my_tablespaceTOpublic;*GRANT--3. 查看系统内用户自定义表空间的名字、文件位置和创建它的角色名称。*--4. 系统创建时自动创建的两个...
这些变量可以使用SET语句、编辑 postgresql.conf配置参数、通过 PGOPTIONS环境变量(使用 libpq或者基于libpq的应用时) 或者启动postgres服务器时通过命令行标志设置。 语法 SHOW name SHOW ALL 参数 name一个运行时参数的名称。此外,有一些可以显示但不能设置的参数: SERVER_VERSION显示服务器的版本号。 SERVER_ENCODING...
v_constraint_comment_record record;BEGIN-- grab the oid of the table; https://www.postgresql.org/docs/8.3/catalog-pg-class.htmlSELECTc.oid, c.relkindINTOv_table_oid, v_table_typeFROMpg_catalog.pg_class cLEFTJOINpg_catalog.pg_namespace nONn.oid=c.relnamespaceWHEREc.relkindin('r','p...
PG_SHOW_PLANS 是通过插件的方式,插入到POSTGRESQL 目前支持PG 10 PG11 PG12 PG13 等版本,如果你还继续使用10以下的PG版本,看来是该换换的时候了。 PG_SHOW_PLANS 通过 客户访问PG的进程中设置 HOOK, 将执行语句的执行计划直接保存在 SHARED BUFFER 中,并通过 pg_show_plans 来将计划展示 ...
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可以使用pg_dump和pg_dumpall来完成。比如备份sales数据库: pg_dump drupal>/opt/Postgresql/backup/1.bak pgsql常用命令连接数据库, 默认的用户和数据库是postgrespsql -U user -d dbname切换数据库,相当于mysql的use dbname\c dbname列举数据库,相当于mysql的show databases\l列举表,相当于mysql的show tables\...
People who come fromMySQLare always asking the same question: why doesn't the commandSHOW TABLESwork in PostgreSQL ? 1 2 postgres=>SHOWTABLES; ERROR:unrecognizedconfigurationparameter'tables' First of all, there is aSHOW commandin PostgreSQL, but it's responsible for returning the value of a ru...
event_schedulerHOST:localhostDB:NULLCOMMAND:DaemonTIME:354STATE:Waiting on empty queueINFO:NULL***2.row***ID:8USER:rootHOST:localhostDB:NULLCOMMAND:QueryTIME:0STATE:executingINFO:select*from performance_schema.processlist2rowsinset(0.00sec) 总结 1.使用 MySQL 8.0.22 之前的版本,在业务繁忙的敏感系统...
To see all tables that include the letter “user”, you can run this command. SHOWTABLESLIKE'%user%'; Show Tables in PostgreSQL There are a couple of ways to view a list of tables in PostgreSQL. Show Tables If you’re using a command line, you can use the dt command to display all...