1、相当与MysqL的show databases;
select datname from pg_database;
2、相当于MysqL的show tables;
SELECT table_name FROM information_schema.tables WHERE table_schema = 'public';public 是默认的schema的名字
3、相当与MysqL的describe table_name;
SELECT column_name FROM information_schema.columns WHERE table_name ='table_name';
'table_name'是要查询的表的名字原文链接：https://www.f2er.com/postgresql/195634.html
