ALTER PROCEDURE dbo.ArticleNavigation
(@ArticleFileName varchar(100),@ChannelID int,@Num int)
if (@ChannelID is null and @ArticleFileName is not null)这样吗?
还是:
if (@ChannelID=="" and @ArticleFileName!="")这样吗?
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怎样判断存储过程的参数是否为空
ALTER PROCEDURE dbo.ArticleNavigation (@ArticleFileName varchar(100),@ChannelID int,@Num int) if (@ChannelID is null and @ArticleFileName is not null)这样吗? 还是: if (@ChannelID=="" and @ArticleFileName!="")这样吗?