//查询所有表的所有字段:
select * from information_schema.columns where table_name='sys_users'
效果:
//查询指定表的所有字段:
select * from information_schema.columns where table_name='sys_users' and TABLE_SCHEMA='taoke'
效果:
//查询指定表的所有字段的指定类型,注释:
查询所有含有此字段名的表:
SELECT * FROM information_schema.columns WHERE column_name='name';
查询指定数据库含有此字段名的表:
SELECT * FROM information_schema.columns WHERE column_name='name' and TABLE_SCHEMA='wljdb';
查询指定表数据库指定表的所有字段
select column_name from information_schema.COLUMNS where table_name='sys_users' and TABLE_SCHEMA='taoke'
查询指定表数据库指定表的第二个字段名:
select column_name from information_schema.COLUMNS where table_name='sys_users' and TABLE_SCHEMA='taoke' LIMIT 1,1
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