SQL server:查詢條件中判斷某字段不爲空

serialno is null     判斷爲空app 判斷不爲空：code select serialno,applyno,examcode,examname,hisordercode,hisordername,itemtype,xmsl,itemunit,addtype from Lis_AcceptItems it where (not serialno is null)

>>阅读原文<<