关于字符串相加的问题：由于null加上任何字符串都为null
我现在是这样的写的，请教各位有什么更好的方法？？
是SQL 2008 R2

SQL code

(case when A.ItemMemo is null then '' else A.ItemMemo end)     +                  (case when A4.Description is null then '' else A4.Description end)    AS 工艺要求

SQL code

isnull(A.ItemMemo,'')+isnull(A4.Description,'') as 工艺要求
[解决办法]
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SQL code
isnull(A.ItemMemo,'')+isnull(A4.Description,'') as 工艺要求

[解决办法]
SQL code
isnull(A.ItemMemo,'')+isnull(A4.Description,'') AS 工艺要求