恢复:需要先把备份的压缩文件替换当前的数据文件,然后修改postgresql.conf,因为这个配置文件在data文件夹中,所以只能是在把base.tar解压到数据库当前数据位置,也就是我们默认初始化指定的数据保存位置data文件夹中,才能修改配置,在配置好归档设置以后,可以启动pgsql服务,进行启动恢复。 在恢复过程中,会拷贝归档文件,进行...
\d [tablename] 查看指定表的结构信息 \dn 查看当前库下所有schema\c [databaseName] 切换到指定库下 \help 查看所有SQL帮助信息,与\?不同 \help create user 可查看创建用户相关的帮助信息 \du 查看所有用户信息 \x 格式化输出,类似于mysql中的\G 2.用户管理及权限分配: pg用户分为两类,role 和user,默...
postgres@[local]:5432=#\c test pguserYou are now connected to database"test"as user"pguser".test@[local]:5432=#select current_database;ERROR: column"current_database"does not exist LINE 1: select current_database; ^test@[local]:5432=#select current_database();current_database ---test...
* /192.168.13.31/ * 终端1 postgres=# drop table tt; DROP TABLE postgres=# insert into t select generate_series(1,10000); INSERT 0 10000 postgres=# checkpoint;select pg_switch_wal(); CHECKPOINT pg_switch_wal --- 0/60C1480 (1 row) postgres=# checkpoint;select pg_switch_wal(); CHECKPO...
Switch over to thepostgresaccount on your server by typing: sudo -i -u postgres You can now access a Postgres prompt immediately by typing: psql This will log you into the PostgreSQL prompt, and from here you are free to interact with the database management system right away. ...
DatabaseName String 慢SQL查询的数据库名示例值:postgres UserName String 慢SQL执行的用户名示例值:postgres NormalQuery String 抽象参数之后的慢SQL示例值:select $1 ClientAddr String 慢SQL执行的客户端地址示例值:::1 CallNum Integer 在选定时间范围内慢SQL语句执行的次数示例值:1 CallPercent Float 在选定时...
Pgsql修改json数据单个字段和多个字段_1024小神的博客-CSDN博客 postgresql jsonb_set 更改json数据_postgresql 修改json数据_小兜全糖(cxc)的博客-CSDN博客 介绍 先介绍下jsonb_set函数 jsonb_set(target jsonb, path text[], new_value jsonb[,create_missing boolean]) ...
--upgrade Upgrade database cluster for new major version of PostgreSQL server. See the --upgrade-from option for more info.Options: --unit=UNIT_NAME The UNIT_NAME is used to select proper unit configuration (unit == service or initscript name ...
TupleTableSlot * ExecProcNode(PlanState *node) { TupleTableSlot *result; CHECK_FOR_INTERRUPTS(); if (node->chgParam != NULL) /* something changed */ ExecReScan(node); /* let ReScan handle this */ if (node->instrument) InstrStartNode(node->instrument); switch (nodeTag(node)) { /*...
Instead of adding this option in the postgresql.conf we should simply create the standby.signal file on each of the non-primary nodes: Raw $ touch /var/lib/pgsql/data/standby.signal Once the above is configured, you can start the database instance on all the remaining cluster nodes ( ...