[sql] 1、相当与mysql的show databases; [sql] select datname from pg_database; [sql] 2、相当于mysql的show tables; [sql] SELECT table_name FROM information_schema.tables WHERE table_schema = 'public'; public 是默认的schema的名字 [sql] 3、相当与mysql的describe table_name; [sql] SELECT column_name FROM information_schema.columns WHERE table_name ='table_name'; [sql] 'table_name'是要查询的表的名字