List tables in database => \d List database users => \du Turn on timer for queryexecution=> \timing on Get information of current user and connection => \conninfo You are connected to database "template1" as user "mengzhusun" via socket in "/tmp" at port "5432". Enter a differen...
Query below lists tables and their primary key (PK) constraint names. By browsing list you can spot which tables have and which don't have primary keys. See also:tables without primary keys. Do table names in your database always make sense? Honestly. ...
How to find what tablespace a table/index is in on PostgreSQL? For table: SELECT tablespace FROM pg_tables WHERE tablename ='t1'AND schemaname ='schema1';
SELECT pg_database.datnameas"database_name", pg_database_size(pg_database.datname)/1024/1024/1024AS size_in_GB FROM pg_database ORDER by size_in_GB DESC; database_name|size_in_gb---+---mumbai|422template1|0template0|0(3rows) 使用元命令获取 Postgres 中所有数据库及其大小的列表 nel...
PostgreSQL 中使用 aclitem 来表示一个具体的数据库对象上的权限。对于 database 和 schema,aclitem 存储在 pg_database.datacl 和 pg_namespace.nspacl 中,对于 table,view 等其他数据库对象,pg_class.relacl 中保存了 aclitem 的一个 list。对于列级别的权限,aclitem 将保存在 pg_attribute.attacl 中。
postgres=# \c postgres tbase 172.16.0.4715432 You are now connected to database"postgres" as user "tbase" on host "172.16.0.47"at port "15432".3.19.2.3 显示和设置该连接当前运行参数●显示当前连接的运行参数。postgres=# SELECT CURRENT_USER; current_user --- tbase (1 row) postgres=# show ...
postgres=# \dn List of schemas Name | Owner---+---accounts | postgrespublic | pg_database_owner 7、显示用户定义的函数 PostgreSQL 是一个功能繁重的数据库。如果您来自其他数据库（如 SQL Server），这可能会感觉有点违反直觉，因为很多讨论和培训都在谈论使用函数的陷阱，尤其是在查询性...
[postgres@node1 ~]$ pgbench -b listAvailable builtin scripts:tpcb-likesimple-updateselect-only 第一种小模式(tpcb-like): pgbench -U postgres -T 10 -c 10 -h 192.168.123.11 -d pgbench > 1111.txt 2>&1 >>1111.txt 截取输出的部分结果,可以看到pgbench有update,insert,和select这些动作,都是在...
DataLakeAnalyticsUsqlActivity DataMapperMapping DatabricksNotebookActivity DatabricksSparkJarActivity DatabricksSparkPythonActivity Dataset DatasetCompression DatasetDebugResource DatasetFolder DatasetListResponse DatasetLocation DatasetReference DatasetResource DatasetResource.Definition DatasetResource.DefinitionStages DatasetRes...
Keyset tables Keyset tables are used by ArcGIS clients to improve query performance. Keyset tables store a list of selected rows when an ArcGIS client executes a geodatabase relationship query that joins tables using attributes that are type integer, number, date, or string. They accommodat...