3、修改整个schema所有表owner DO $$DECLAREr record; iint; v_schematext[]:='{public}'; v_new_ownervarchar:='yysg';BEGINFORrINSELECT'ALTER TABLE "'||table_schema||'"."'||table_name||'" OWNER TO'||v_new_owner||';'ASaFROMinformation_schema.tablesWHEREtable_schema=ANY(v_schema)UNIONA...
has_table_privilege(user,table,privilege) 用户是否有访问表的权限 SELECT/INSERT/UPDATE/DELETE/RULE/REFERENCES/TRIGGER has_table_privilege(table,privilege) 当前用户是否有访问表的权限 SELECT/INSERT/UPDATE/DELETE/RULE/REFERENCES/TRIGGER has_database_privilege(user,database,privilege) 用户是否有访问数据库...
-- First, let's get the OID of the 'public' namespace that our table lives in - you need -- to run this in the 'blogdb' database, otherwise you'll get the OID of the 'public' -- namespace for the database you're currently connected to. blogdb=# select to_regnamespace('pub...
postgres=# create table test_toast(id int, author name, title varchar(256), content1 text, content2 text); CREATE TABLE --默认text为extended,将content2改为external。语法如下: --alter table table_name alter column {$column_name} set storage { PLAIN | MAIN | EXTERNAL | EXTENDED } ; post...
Schema|Name|Type|Owner ---+---+---+--- public|company|table|postgres(1row)postgres=# \d+ company # 查看表的字段的详细信息(相当于 describe company)Table"public.company"Column|Type|Collation|Nullable|Default|Storage|Stats target|Description ---+---+---+---+---+--...
table_estimates AS ( -- make estimates of how large the table should be -- based on row and page size SELECT schemaname, tablename, bs, reltuples::numeric AS est_rows, relpages * bs AS table_bytes, CEIL((reltuples * (datahdr + nullhdr2 + 4 + ma - ( CASE WHEN datahdr % ...
publicschema is where all your tables live by default - if you don’t specify any specific schema. So if you create a tableCREATE TABLE things (name text)it just ends up in the public schema, which you’ll see when listing all the tables with\dt(of course provided you haven’t change...
"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:...
Postgres instead has a NOT NULL constraint column named attnotnull in pg_attribute, the systems catalog where information about table columns is stored. 11. PackagesPostgres does not have packages, but, using schema architecture, functions, and procedures can be grouped. Use t...
Schema|Name|Type|Owner---+---+---+---public|inno_order|table|repuser(1row)# 下面是参考官方github上面的教程实践的: testdb=#CREATEEXTENSIONmysql_fdw;testdb=#CREATESERVERmysql_server_db10FOREIGNDATAWRAPPERmysql_fdwOPTIONS(host'192.168.2.4',port'3306');testdb=#CREATEUSERMAPPINGFORpostgresSERVERmys...