//查詢所有表的所有字段:
select * from information_schema.columns where table_name='sys_users'
效果:

//查詢指定表的所有字段:
select * from information_schema.columns where table_name='sys_users' and TABLE_SCHEMA='taoke'
效果:

//查詢指定表的所有字段的指定類型,注釋:

查詢所有含有此字段名的表:
SELECT * FROM information_schema.columns WHERE column_name='name';

查詢指定數據庫含有此字段名的表:
SELECT * FROM information_schema.columns WHERE column_name='name' and TABLE_SCHEMA='wljdb';

查詢指定表數據庫指定表的所有字段
select column_name from information_schema.COLUMNS where table_name='sys_users' and TABLE_SCHEMA='taoke'

查詢指定表數據庫指定表的第二個字段名:
select column_name from information_schema.COLUMNS where table_name='sys_users' and TABLE_SCHEMA='taoke' LIMIT 1,1

---------------------完畢----------------------------

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