Question

当我使用public static Expression<Func<ApplicationUser, SearchResultItemViewModel>> Projection(int parm) => item => new SearchResultItemViewModel { Id = item.Id, Article = item.FirstName + parm.ToString() };语句时，出现“无效语法”错误：

MERGE

在“ RL”旁边出现错误“语法无效”。我在SQL Server 2012上使用的兼容性级别为110。有人知道这是怎么回事吗？

MERGE ResponsibleLawyers AS RL
USING @tempPerson AS TP ON RL.ResponsibleLawyerID = TP.ResponsibleLawyerID

WHEN MATCHED THEN
    UPDATE 
        SET RL.FirstName = TP.FirstName, 
            RL.LastName = TP.LastName, 
            RL.AccountName = TP.AccountName, 
            RL.EmailAddress = TP.EmailAddress, 
            RL.Region = TP.Region, 
            RL.Active = TP.Active 

WHEN NOT MATCHED BY RL THEN
    INSERT (ResponsibleLawyerID, FirstName, LastName, AccountName, EmailAddress, Region, Active) 
    VALUES (TP.ResponsibleLawyerID, TP.FirstName, TP.LastName, TP.AccountName, TP.EmailAddress, TP.Region, TP.Active)

WHEN NOT MATCHED BY SOURCE THEN 
    DELETE

Answer 1

我认为WHEN NOT MATCHED BY RL THEN应该是WHEN NOT MATCHED BY TARGET THEN。您在此处使用SOURCE和TARGET，而不是表别名。由于许多示例使用SOURCE和TARGET作为表别名，所以可能会造成混淆。

Reference

在SQL Server 2012中使用MERGE语句时的语法不正确

1 个答案: