mysql查询字段、拼接字段
1.mysql查询表的所有字段
select COLUMN_NAME,column_comment from INFORMATION_SCHEMA.Columns where table_name='表名' and table_schema='数据库名';
2.mysql拼接所有字段,方便写sql
select group_concat( COLUMN_NAME separator ', ') from INFORMATION_SCHEMA.Columns where table_name='表名' and table_schema='数据库名';