SQL DELETE WITH JOIN不工作

sql
select

2013-03-23 84 views 1 likes

我有这个查询，它返回没有引用的关键字的所有记录查询正在工作，但我想删除所有这些记录，问题是如果我把DELETE改为的SELECT我得到错误。SQL DELETE WITH JOIN不工作

SELECT Keywords.[Id] 
    ,[QuoteId]  
    FROM [QuotesTemple].[dbo].[Keywords] 
LEFT JOIN [QuotesTemple].[dbo].Quotes ON Keywords.QuoteId=Quotes.Id 
    WHERE Quotes.Id IS NULL

这是行不通的。

DELETE 
    FROM [QuotesTemple].[dbo].[Keywords] 
    LEFT JOIN [QuotesTemple].[dbo].Quotes ON Keywords.QuoteId=Quotes.Id 
    WHERE Quotes.Id IS NULL

我得到这个错误：

消息156，15级，状态1，4号线关键字附近有语法错误 '左'。

来源

2013-03-23 Mario M

回答

写这样的：

DELETE [QuotesTemple].[dbo].[Keywords] FROM [QuotesTemple].[dbo].[Keywords] 
    LEFT JOIN [QuotesTemple].[dbo].Quotes ON Keywords.QuoteId=Quotes.Id 
    WHERE Quotes.Id IS NULL

来源

2013-03-23 23:50:14 Luxspes

现在的工作。谢谢！ – 2013-03-23 23:53:56

有效语法是：

DELETE [QuotesTemple].[dbo].[Keywords] 
FROM [QuotesTemple].[dbo].[Keywords] AS k 
LEFT JOIN [QuotesTemple].[dbo].[Quotes] AS q ON k.QuoteId = q.Id 
WHERE q.Id IS NULL

来源

2013-03-23 23:55:54 veljasije

you can also write as below 

delete t1 FROM projects AS t1 LEFT OUTER JOIN [QuotesTemple].[dbo].Quotes AS t2 on t1.QuoteId= t2.QuoteId where t2.Id is Null

来源

2013-03-24 00:00:59 DevelopmentIsMyPassion

SQL DELETE WITH JOIN不工作

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