postgresql查詢語句

//查詢表名稱
SELECT tablename FROM pg_tables
WHERE tablename NOT LIKE 'pg%'
AND tablename NOT LIKE 'sql_%'
ORDER BY tablename;

//查詢數據庫名稱

SELECT datname FROM pg_database;

//給表列增加注釋

comment on table user is 'Our session logs';

//postgresql查詢注釋信息

select description from pg_description

join pg_class on pg_description.objoid = pg_class.oid

where relname = 'user'