如何使用INNER JOIN与SQL Server删除？
我想在SQL Server 2008中使用INNER JOIN进行删除。
但是我得到这个错误，
Msg 156，Level 15，State 1，Line 15
关键字“INNER”附近的语法不正确。
我的代码：
DELETE FROM WorkRecord2 INNER JOIN Employee ON EmployeeRun=EmployeeNo WHERE Company = '1' AND Date = '2013-05-06'
您需要指定要删除的表，这里是一个带有别名的版本：
DELETE w FROM WorkRecord2 w INNER JOIN Employee e ON EmployeeRun=EmployeeNo WHERE Company = '1' AND Date = '2013-05-06'
只需在要删除logging的位置添加DELETE和FROM之间的表名称，因为我们必须指定要删除的表。 同时删除ORDER BY子句，因为在删除logging时没有任何东西需要sorting。
所以你的最终查询应该是这样的：
DELETE WorkRecord2 FROM WorkRecord2 INNER JOIN Employee ON EmployeeRun=EmployeeNo WHERE Company = '1' AND Date = '2013-05-06';
尝试这个：
DELETE FROM WorkRecord2 FROM Employee Where EmployeeRun=EmployeeNo And Company = '1' AND Date = '2013-05-06'
可能这对你有帮助 –
DELETE FROM dbo.WorkRecord2 WHERE EmployeeRun IN ( SELECT e.EmployeeNo FROM dbo.Employee e WHERE ... )
或者试试这个 –
DELETE FROM dbo.WorkRecord2 WHERE EXISTS( SELECT 1 FROM dbo.Employee e WHERE EmployeeRun = e.EmployeeNo AND .... )
它应该是：
DELETE zpost FROM zpost INNER JOIN zcomment ON (zpost.zpostid = zcomment.zpostid) WHERE zcomment.icomment = "first"
这个版本应该工作
DELETE WorkRecord2 FROM WorkRecord2 INNER JOIN Employee ON EmployeeRun=EmployeeNo Where Company = '1' AND Date = '2013-05-06'
试试这个查询：
DELETE WorkRecord2, Employee FROM WorkRecord2 INNER JOIN Employee ON (tbl_name.EmployeeRun=tbl_name.EmployeeNo) WHERE tbl_name.Company = '1' AND tbl_name.Date = '2013-05-06';
DELETE a FROM WorkRecord2 a INNER JOIN Employee b ON a.EmployeeRun = b.EmployeeNo Where a.Company = '1' AND a.Date = '2013-05-06'
在SQL Server Management Studio中，我可以轻松创build一个SELECT查询。
SELECT Contact.Naam_Contactpersoon, Bedrijf.BedrijfsNaam, Bedrijf.Adres, Bedrijf.Postcode FROM Contact INNER JOIN Bedrijf ON Bedrijf.IDBedrijf = Contact.IDbedrijf
我可以执行它，并显示我所有的联系人。
现在将SELECT更改为DELETE：
DELETE Contact FROM Contact INNER JOIN Bedrijf ON Bedrijf.IDBedrijf = Contact.IDbedrijf
您在SELECT语句中看到的所有logging都将被删除。
你甚至可以用同样的程序创build一个更难的内连接，例如：
DELETE FROM Contact INNER JOIN Bedrijf ON Bedrijf.IDBedrijf = Contact.IDbedrijf INNER JOIN LoginBedrijf ON Bedrijf.IDLoginBedrijf = LoginBedrijf.IDLoginBedrijf
这是我的SQL Server版本
DECLARE @ProfileId table(Id bigint) DELETE FROM AspNetUsers OUTPUT deleted.ProfileId INTO @ProfileId WHERE Email = @email DELETE FROM UserProfiles WHERE Id = (Select Id FROM @ProfileId)
您不指定Company和Date的表格，您可能想要解决该问题。
使用MERGE标准SQL：
MERGE WorkRecord2 T USING Employee S ON T.EmployeeRun = S.EmployeeNo AND Company = '1' AND Date = '2013-05-06' WHEN MATCHED THEN DELETE;
@Devart的答案也是Standard SQL，虽然不完整，应该看起来更像这样：
DELETE FROM WorkRecord2 WHERE EXISTS ( SELECT * FROM Employee S WHERE S.EmployeeNo = WorkRecord2.EmployeeRun AND Company = '1' AND Date = '2013-05-06' );
关于上述情况需要注意的重要一点是，删除是针对单个表，如第二个示例中通过要求标量子查询所强制的。
对于我来说，各种专有的语法答案很难阅读和理解。 我想最好在@frans eilering的回答中描述一下，即编写代码的人不一定会关心读者和维护代码的人。
另一种使用CTE 。
;WITH cte AS (SELECT * FROM workrecord2 w WHERE EXISTS (SELECT 1 FROM employee e WHERE employeerun = employeeno AND company = '1' AND date = '2013-05-06')) DELETE FROM cte
注意：当你想delete时，我们不能在CTE里面使用JOIN 。
以下是我目前用于删除甚至更新的内容：
DELETE FROM w FROM WorkRecord2 w, Employee e WHERE w.EmployeeRun = e.EmployeeNo AND w.Company = '1' AND w.Date = '2013-05-06'
这是一个简单的查询，一次删除两个表中的logging。
DELETE table1.* , table2.* FROM table1 INNER JOIN table2 ON table1.id= table2.id where table1.id ='given_id'
