Question

如何在计算列中将负值转换为零？我们有多个表的内连接，其中列是从表中取得的计算列，我需要将列中存在的负值转换为零，我该怎么办？尝试了什么.. 我试过＆＃39; case＆＃39;但它不起作用。

我打算改变的代码部分类似于这个

(isnull((select isnull(sum(AVAILPHYSICAL),0) from ax.inventsum 
  where ITEMID = ax.INVENTTABLE.ITEMID ))-
  (select isnull(sum(QTY*-1),0) from ax.RETAILTRANSACTIONSALESTRANS RTST  inner join ax.RETAILTRANSACTIONTABLE RTT
    on RTT.TRANSACTIONID = RTST.TRANSACTIONID
    where ITEMID=ax.INVENTTABLE.ITEMID and (RTT.ENTRYSTATUS = 0 OR RTT.ENTRYSTATUS = 2) and
    (RTST.TRANSACTIONSTATUS = 0 or 
     RTST.TRANSACTIONSTATUS = 2 ) and 
     As Quantity,

在T-SQL中将负值转换为零

0 个答案: