查询数据核心语法
1、查库
select schema_name from information_schema.schemata
2\ 查表
select table_name from information_schema.tables where table_schema=库名
3、查列
select column_name from information_schema.columns where table_name=表名
4、查数据
select 列名 from 库名.表名
转载于:https://blog.51cto.com/2042617/2338844