DROP SCHEMA myschema; #删除一个为空的模式 DROP SCHEMA myschema CASCADE; #删除一个模式以及其中包含的所有对象 CREATE SCHEMA schemaname AUTHORIZATION username; #创建一个由其他人所拥有的模式公共模式 创建的表都没有指定任何模式名称,默认情况下这些表(以及其他对象)会自动的被放入一个名为“public”的模式...
is_typed from information_schema.tables where table_schema<>'information_schema' and table_schema<>'pg_catalog';--superuser可以查询到所有表,普通用户只能查询到自己owner的表,但是查询结果居然有视图在里面,所以不是标准语句
SELECT nspname ||'.'|| relname AS"table",pg_size_pretty(pg_total_relation_size(C.oid)) AS"total_size"FROM pg_class C LEFT JOIN pg_namespace N ON (N.oid = C.relnamespace) WHERE nspname NOT IN ('pg_catalog','information_schema') AND C.relkind <>'i'AND nspname !~'^pg_toa...
"description: "Name of current database"- schemaname:usage: "LABEL"description: "Name of the schema that this table is in"- relname:usage: "LABEL"description: "Name of this table"- seq_scan:usage: "COUNTER"description: "Number of sequential scans initiated on this table"- seq_tup_read:...
> I used a DBeaver to connect to postgres but it does not show all tables in > a schema. > > Can anyone shed light on this? Permissions? -- Angular momentum makes the world go 'round. Re: DBeaver does not show all tables in a Schema ...
In addition, there are gh-ost, pt-online-schema-change to support online DDL for MySQL where the native support is limited. Replication For Postgres, the standard replication is physical replication using WAL. For MySQL, the standard replication is logical replication using binlog. Postgres also ...
仅恢复在list-file中列出的条目,恢复的顺序为各个条目在该文件中出现的顺序,你也可以手工编辑该文件,并重新排列这些条目的位置,之后再进行恢复操作,其中以分号(;)开头的行为注释行,注释行不会被导入。 -n namespace 仅恢复指定模式(Schema)的数据库对象。该选项可以和-t选项联合使用,以恢复指定的数据对象。 -O...
CREATE SCHEMA tooldb; CREATE TYPE tooldb.point AS ( firstpoint int, lastpoint int ); create table if not exists tooldb.points( firstpoint int, lastpoint int ); CREATE OR REPLACE procedure tooldb.point_insert( in_point tooldb.point ...
(user 'user1', password 'zc@123456'); CREATE USER MAPPING postgres=# CREATE FOREIGN TABLE pg_fdw_local (id int4,info text) SERVER pg_fdw_server OPTIONS (schema_name 'public', table_name 'pg_fdw_remote'); CREATE FOREIGN TABLE 3.在本地查询,插入数据 [postgres@zc ~]$ psql -p 5432 ...
In general you should only use Enums when the list of values is small, fixed, and unlikely to change often. Things like "a list of continents" or "a list of departments" are good candidates for Enums.Using enums in tables#To use the Enum in a table, you can define a column with...