Sql 在多个列上合并

我正在尝试使用“合并”从链接服务器插入记录。该表只有两列，这两列都需要用于检查新记录

MERGE dbo.[TableA] AS Target
USING (SELECT [PERMNUM], [ABS_DATE]
    FROM [Linked Server].[dbo].[TableA]) 
            AS source ([PERMNUM], [ABS_DATE]
    ON (Target.[PERMNUM] = source.[PERMNUM] 
        AND Target.[ABS_DATE] = source.[ABS_DATE])
    WHEN NOT MATCHED THEN
        INSERT ([PERMNUM], [ABS_DATE])
        VALUES (source.[PERMNUM], source.[ABS_DATE]);

我得到以下错误

Msg 156, Level 15, State 1, Line 6
Incorrect syntax near the keyword 'ON'.

---

如何在ON子句中同时使用这两列？我看过其他的例子，据我所知，我是正确的

看来我少了一个“'）”

我修复了代码，因此它现在是正确的：

SET NOCOUNT ON
MERGE dbo.[PSPI_DAY_ABSENCES] AS Target
USING (SELECT [PERMNUM], [ABS_DATE]
    FROM [SQLPASS01].[PSPI].[dbo].[PSPI_DAY_ABSENCES]) 
            AS source ([PERMNUM], [ABS_DATE])
    ON Target.[PERMNUM] = source.[PERMNUM] AND Target.[ABS_DATE] = source.[ABS_DATE]
    WHEN NOT MATCHED THEN
        INSERT ([PERMNUM], [ABS_DATE])
        VALUES (source.[PERMNUM], source.[ABS_DATE]);