Sql server 在SQL查询中返回@@rowcount结果

我想找出错误

如果存在

，然后打印匹配的行数。但这不起作用。请帮忙

if exists (select * from [rto] a
     inner join rt b
     on a.NUM=b.TABLE_NAME
     where a.START_YEAR between b.YEAR_START and b.YEAR_STOP)
     Raiserror ('Matched recs found',16,1)
     print 'There are' +  cast(@@rowcount as varchar(20)) + 'matched rows'

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您错过了

开始

和

结束

：

if exists (select * from [rto] a
    inner join rt b
    on a.NUM=b.TABLE_NAME
    where a.START_YEAR between b.YEAR_START and b.YEAR_STOP)
BEGIN
    Raiserror ('Matched recs found',16,1)
    print 'There are ' +  cast(@@rowcount as varchar(20)) + ' matched rows'
END

---

这是您原始帖子的替代方案…不确定您是否有特定要求，但这应该会得到您想要的错误输出：

DECLARE @rowcount INT
SET @rowcount = (select COUNT(*) from [rto] a
    inner join rt b
    on a.NUM=b.TABLE_NAME
    where a.START_YEAR between b.YEAR_START and b.YEAR_STOP)
IF @rowcount > 0
BEGIN
    Raiserror ('Matched recs found',16,1)
    print 'There are ' +  cast(@rowcount as varchar(20)) + ' matched rows'
END

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谢谢，但它返回零，但我可以看到有匹配的记录。