1、查看系统表
SELECT t.TABLE_NAME, t.CONSTRAINT_TYPE, c.COLUMN_NAME, c.ORDINAL_POSITIONFROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS AS t, INFORMATION_SCHEMA.KEY_COLUMN_USAGE AS cWHERE t.TABLE_NAME = c.TABLE_NAME AND t.CONSTRAINT_TYPE = 'PRIMARY KEY' AND t.TABLE_NAME='表名' AND t.TABLE_SCHEMA='数据库名';
2、查看建表语句
show create table <表名>;
3、查看表结构
desc <表名>；