select語句執行時沒有錯誤或警告。通過加入,分組依賴和更新
更新語句拋出錯誤:
關鍵字'組'附近的語法不正確。
select [sSVsys].[textUniqueWordCount], count(*) as [actCount]
from [docSVsys] as [sSVsys]with (nolock)
join [FTSindexWordOnce] with (nolock)
on [sSVsys].[sID] = [FTSindexWordOnce].[sID]
where [sSVsys].[sID] < 500000
group by [sSVsys].[sID], [sSVsys].[textUniqueWordCount]
having [sSVsys].[textUniqueWordCount] <> count(*)
update [sSVsys]
set [sSVsys].[textUniqueWordCount] = count(*)
from [docSVsys] as [sSVsys]with (nolock)
join [FTSindexWordOnce] with (nolock)
on [sSVsys].[sID] = [FTSindexWordOnce].[sID]
where [sSVsys].[sID] < 500000
group by [sSVsys].[sID], [sSVsys].[textUniqueWordCount]
having [sSVsys].[textUniqueWordCount] <> count(*)
如果答案是加入派生表,那麼我可以弄清楚。
我在現有更新中是否有語法錯誤?
此派生表工作
update [docSVsys]
set [docSVsys].[textUniqueWordCount] = [WordOnce].[actCount]
from [docSVsys]
join
( select [FTSindexWordOnce].[sID], count(*) as [actCount]
from [FTSindexWordOnce] with (nolock)
-- where [FTSindexWordOnce].[sID] < 1500000
group by [FTSindexWordOnce].[sID] ) as [WordOnce]
on [docSVsys].[sID] = [WordOnce].[sID]
and [docSVsys].[textUniqueWordCount] <> [WordOnce].[actCount]
我將離開這個了幾天的上一個更好的辦法有任何意見或答案,然後直接刪除。這種方法在現有的SO答案中。
通常我會用一個子查詢與聚合或CTE。 – Taryn