每一天都有新的希望

http://download.youkuaiyun.com/source/2223067

/*while set ANSI_NULLS on, select * from table1 where column_name1=NULL will return 0 row, select * from table1 where column_name1NULL will return 0 row, no matter column_name1 contains null value or not.*/ /*while set ANSI_NULLS off, select * fr

<br />-- sorry, it looks so like the assemble language struct<br /> <br />-- when power not enough, or memory capacity not enough, or other reasons<br />delete from table1 where id='123456789'<br /><br />-- @@ERROR is a global error variable, it will err w