Question

我正在尝试在两个临时表中使用“MERGE”，但我没有得到结果。

错误：关键字“AS”附近的语法不正确。

    Create Table #tmp1
    (
    [Server] varchar(4),
    [DateTime] datetime,
    IdComponent int,
    AvgTimeTaken int
    )

    Create Table #tmp2
    (
    [Server] varchar(4),
    [DateTime] datetime,
    IdComponent int,
    AvgTimeTaken int
    )

    insert into #tmp1 values ('BE01','2012-08-01 00:00:00',1,100)
    insert into #tmp1 values ('BE02','2012-08-01 00:00:00',2,100)
    insert into #tmp1 values ('BE03','2012-08-01 00:00:00',3,100)
    insert into #tmp1 values ('BE04','2012-08-01 00:00:00',4,100)
    insert into #tmp1 values ('BE05','2012-08-01 00:00:00',5,100)


    insert into #tmp2 values ('BE01','2012-08-01 00:00:00',1,100)
    insert into #tmp2 values ('BE02','2012-08-01 00:00:00',2,200)
    insert into #tmp2 values ('BE03','2012-08-01 00:00:00',3,300)
    insert into #tmp2 values ('BE04','2012-08-01 01:00:00',4,400)
    insert into #tmp2 values ('BE05','2012-08-01 02:00:00',5,500)

    MERGE #tmp1 AS [Target]
    USING #tmp2 AS [Source]
    ON ([Target].[Server] = [Source].[Server] 
        AND [Target].[DateTime] =  [Source].[DateTime] 
        AND [Target].[IdComponent] = [Source].[IdComponent])
    WHEN MATCHED THEN 
        UPDATE
        SET [Target].AvgTimeTaken = [Source].AvgTimeTaken
    WHEN NOT MATCHED THEN   
        INSERT ([Target].[Server], [Target].[DateTime], [Target].IdComponent, [Target].AvgTimeTaken)
VALUES ([Source].[Server], [Source].[DateTime], [Source].IdComponent, [Source].AvgTimeTaken);

我不确定自己错了。最后还有一个分号。求救！

Answer 1

之前我遇到过此错误，原因是SQL Server 2008 R2不支持合并语法，除非您通过执行以下操作设置兼容模式：

ALTER DATABASE mydatabase SET COMPATIBILITY_LEVEL = 100

其中 mydatabase 是您要将其应用于的数据库的名称。

Answer 2

取出Target子句中的INSERT别名。

Create Table #tmp1 (
    [Server] varchar(4),
    [DateTime] datetime,
    IdComponent int,
    AvgTimeTaken int
);

Create Table #tmp2 (
    [Server] varchar(4),
    [DateTime] datetime,
    IdComponent int,
    AvgTimeTaken int
);

insert into #tmp1 values ('BE01','2012-08-01 00:00:00',1,100);
insert into #tmp1 values ('BE02','2012-08-01 00:00:00',2,100);
insert into #tmp1 values ('BE03','2012-08-01 00:00:00',3,100);
insert into #tmp1 values ('BE04','2012-08-01 00:00:00',4,100);
insert into #tmp1 values ('BE05','2012-08-01 00:00:00',5,100);


insert into #tmp2 values ('BE01','2012-08-01 00:00:00',1,100);
insert into #tmp2 values ('BE02','2012-08-01 00:00:00',2,200);
insert into #tmp2 values ('BE03','2012-08-01 00:00:00',3,300);
insert into #tmp2 values ('BE04','2012-08-01 01:00:00',4,400);
insert into #tmp2 values ('BE05','2012-08-01 02:00:00',5,500);

MERGE #tmp1 AS Target
USING #tmp2 AS Source
ON (Target.Server = Source.Server 
    AND Target.DateTime =  Source.DateTime 
    AND Target.IdComponent = Source.IdComponent)
WHEN MATCHED THEN 
    UPDATE
    SET Target.AvgTimeTaken = Source.AvgTimeTaken
WHEN NOT MATCHED THEN   
    INSERT (Server, DateTime, IdComponent, AvgTimeTaken)
VALUES (Source.Server, Source.DateTime, Source.IdComponent, Source.AvgTimeTaken);

Answer 3

MERGE语句中使用的插入列列表不能包含多部分标识符。改为使用单个部件标识符。

SQL Server 2008中的合并语句错误（附近的语法不正确）

3 个答案: