CREATEUSER非保留 CROSS保留(可以是函数)保留保留保留 CSV非保留 CUBE保留保留 CUME_DIST保留 CURRENT保留保留保留 CURRENT_DATE保留保留保留保留 CURRENT_DEFAULT_TRANSFORM_GROUP保留 CURRENT_PATH保留保留 CURRENT_ROLE保留保留保留 CURRENT_TIME保留保留保留保留 CURRENT_TIMESTAMP保留保留保留保留 CURRENT_TRANSFORM_GROUP_F...
postgres=# \password dlf // 重新设置用户dlf的密码,然后需要 \q退出后才生效 c:\>psql exampledb < user.sql // 将user.sql文件导入到exampled数据库中 postgres=# \h select // 精细显示SQL命令中的select命令的使用方法 postgres=# \l // 显示所有数据库 postgres=# \dt // 显示当前数据库中的所有...
show config_file ; show hba_file ; show ident_file ; select name,setting from pg_settings where category= 'File Locations'; select * from pg_settings where name like '%work_mem%' ; select current_setting('work_mem'); 查看PG库设置情况 select name,setting from pg_settings; select name,...
\if EXPR begin conditional block \elif EXPR alternative within current conditional block \else final alternative within current conditional block \endif end conditional block Informational (options: S = show system objects, + = additional detail) \d[S+] list tables, views, and sequences \d[S+]...
PostgreSQL是一种开源的关系型数据库管理系统,支持广泛的数据类型和功能。在PostgreSQL中,创建索引是提高查询性能的重要手段之一。当执行创建索引命令时,如果命令挂起,可能是由于以下几个原因导致的: 并发操作:如果在创建索引的同时有其他并发操作正在进行,例如插入、更新或删除数据,可能会导致创建索引命令挂起。这是因为创...
"$user", public (1 row)denali=# set search_path to region_longlive,public; SET denali=# SHOW search_path; search_path --- region_longlive, public (1 row)denali=# \dt List of relations Schema | Name | Type | Owner ---+---+---+--- region_long...
---10.16(Ubuntu10.16-0ubuntu0.18.04.1)(1row)postgres=# SHOW server_version_num; # 查看仅有数字的版本信息server_version_num ---100016(1row)postgres=# SELECT current_setting('server_version_num'); # 查看仅有数字的版本信息current_setting ---100016(1row)postgres=# SELECT current_setting('serv...
postgres=# CREATE USER philipp WITH PASSWORD 'test_pwd'; CREATE ROLE 然后我们可以创建数据库并将所有者设置为philipp: postgres=# CREATE DATABASE sampledb postgres-# WITH OWNER philipp; CREATE DATABASE SQL 脚本 现在执行以下 SQL 脚本来创建架构、表和策略。该脚本还创建 app_user用于连接数据库的 ,。
Today, we'll talk about optimizing with the Postgres deterministic query planner, have a look at using extended statistics, and show how to tune Join collapse times. Share this episode: Click here to share this episode on twitter, or sign up for our newsletter and check out the newsletter ...
backup_user@backup_host:~$ pg_probackup set-config \ -B /mnt/backups \ --instance=node \ --remote-host=postgres_host \ --remote-user=postgres \ -U backup \ -d backupdb Check the configuration of the instance: backup_user@backup_host:~$ pg_probackup show-config \ -B /mnt/backup...