匹配时SQL合并条件删除

我有两个用于合并的表。我的查询有问题，我找不到任何关于原因的信息。发生的事情是；我将运行查询，当我的目标表填充了我想要的信息时，它可以正常工作。然后我再次运行该查询（紧接着），它会发生变化（38行受影响）。我再次运行该查询，它会将这些行重新添加到中，并一次又一次。。。行被删除。共有100多行，但似乎只有相同的行受到影响。源表中没有任何更改

MERGE QA.dbo.RMA AS target USING Touchstn02.dbo.RMA_Detail AS source 
ON (target.RMANUM_52 = source.RMANUM_52) 
WHEN MATCHED AND (source.STATUS_52 >3) 
THEN
DELETE
WHEN NOT MATCHED AND (source.STATUS_52 < 4) AND (source.RECQTY_52 > 0) 
THEN
INSERT         (RMANUM_52, RMADATE_52, CUSTID_52, RETNUM_52, RETQTY_52, 
                SERIAL_52, REPAIR_52, 
                RPLACE_52, CREDIT_52, WRKNUM_52, KEYWRD_52, RECQTY_52, 
                RECDTE_52, STATUS_52, 
                REM1_52, REM2_52, REM3_52, Comment, CMPDTE)
VALUES        (source.RMANUM_52, source.RMADTE_52, source.CUSTID_52, 
               source.RETNUM_52, 
               source.RETQTY_52, source.SERIAL_52, source.REPAIR_52, 
               source.RPLACE_52, source.CREDIT_52, 
               source.WRKNUM_52, source.KEYWRD_52, source.RECQTY_52, 
               source.RECDTE_52, 
               source.STATUS_52, source.REM1_52, source.REM2_52, 
               source.REM3_52, source.REM4_52, 
               source.CMPDTE_52);

我怀疑我在匹配时对

执行
DELETE
——我只能在不匹配时找到
DELETE的信息，但我不知道，因为这似乎每次只影响相同的38行

MERGE QA.dbo.RMA AS target USING Touchstn02.dbo.RMA_Detail AS source 
ON (target.RMANUM_52 = source.RMANUM_52) 
WHEN MATCHED AND (source.STATUS_52 >3) 
THEN
DELETE
WHEN NOT MATCHED AND (source.STATUS_52 < 4) AND (source.RECQTY_52 > 0) 
THEN
INSERT         (RMANUM_52, RMADATE_52, CUSTID_52, RETNUM_52, RETQTY_52, 
                SERIAL_52, REPAIR_52, 
                RPLACE_52, CREDIT_52, WRKNUM_52, KEYWRD_52, RECQTY_52, 
                RECDTE_52, STATUS_52, 
                REM1_52, REM2_52, REM3_52, Comment, CMPDTE)
VALUES        (source.RMANUM_52, source.RMADTE_52, source.CUSTID_52, 
               source.RETNUM_52, 
               source.RETQTY_52, source.SERIAL_52, source.REPAIR_52, 
               source.RPLACE_52, source.CREDIT_52, 
               source.WRKNUM_52, source.KEYWRD_52, source.RECQTY_52, 
               source.RECDTE_52, 
               source.STATUS_52, source.REM1_52, source.REM2_52, 
               source.REM3_52, source.REM4_52, 
               source.CMPDTE_52);

您需要的表和（希望）信息在我的代码中：

MERGE QA.dbo.RMA AS target USING Touchstn02.dbo.RMA_Detail AS source 
ON (target.RMANUM_52 = source.RMANUM_52) 
WHEN MATCHED AND (source.STATUS_52 >3) 
THEN
DELETE
WHEN NOT MATCHED AND (source.STATUS_52 < 4) AND (source.RECQTY_52 > 0) 
THEN
INSERT         (RMANUM_52, RMADATE_52, CUSTID_52, RETNUM_52, RETQTY_52, 
                SERIAL_52, REPAIR_52, 
                RPLACE_52, CREDIT_52, WRKNUM_52, KEYWRD_52, RECQTY_52, 
                RECDTE_52, STATUS_52, 
                REM1_52, REM2_52, REM3_52, Comment, CMPDTE)
VALUES        (source.RMANUM_52, source.RMADTE_52, source.CUSTID_52, 
               source.RETNUM_52, 
               source.RETQTY_52, source.SERIAL_52, source.REPAIR_52, 
               source.RPLACE_52, source.CREDIT_52, 
               source.WRKNUM_52, source.KEYWRD_52, source.RECQTY_52, 
               source.RECDTE_52, 
               source.STATUS_52, source.REM1_52, source.REM2_52, 
               source.REM3_52, source.REM4_52, 
               source.CMPDTE_52);

将QA.dbo.RMA合并为目标，使用touchtn02.dbo.RMA_细节作为源
打开（target.RMANUM_52=source.RMANUM_52）
匹配和时（source.STATUS_52>3）
然后
删除
不匹配和时（source.STATUS_52<4）和（source.RECQTY_52>0）
然后
插入（RMANUM_52、RMADATE_52、CUSTID_52、RETNUM_52、REQTY_52、，
序列号52，维修号52，
R位置52，信用52，工作编号52，钥匙52，记录数量52，
记录52，状态52，
REM1_52，REM2_52，REM3_52，评论，CMPDTE）
值（source.RMANUM_52、source.RMADTE_52、source.CUSTID_52、，
source.RETNUM_52，
source.RETQTY_52、source.SERIAL_52、source.REPAIR_52、，
source.RPLACE_52，source.CREDIT_52，
source.WRKNUM_52、source.KEYWRD_52、source.RECQTY_52、，
source.RECDTE_52，
source.STATUS_52，source.REM1_52，source.REM2_52，
source.REM3_52，source.REM4_52，
资料来源：CMPDTE_52）；

和往常一样，我感谢任何帮助/意见，我想我已经得到了

MERGE QA.dbo.RMA AS target USING Touchstn02.dbo.RMA_Detail AS source 
ON (target.RMANUM_52 = source.RMANUM_52) 
WHEN MATCHED AND (source.STATUS_52 >3) 
THEN
DELETE
WHEN NOT MATCHED AND (source.STATUS_52 < 4) AND (source.RECQTY_52 > 0) 
THEN
INSERT         (RMANUM_52, RMADATE_52, CUSTID_52, RETNUM_52, RETQTY_52, 
                SERIAL_52, REPAIR_52, 
                RPLACE_52, CREDIT_52, WRKNUM_52, KEYWRD_52, RECQTY_52, 
                RECDTE_52, STATUS_52, 
                REM1_52, REM2_52, REM3_52, Comment, CMPDTE)
VALUES        (source.RMANUM_52, source.RMADTE_52, source.CUSTID_52, 
               source.RETNUM_52, 
               source.RETQTY_52, source.SERIAL_52, source.REPAIR_52, 
               source.RPLACE_52, source.CREDIT_52, 
               source.WRKNUM_52, source.KEYWRD_52, source.RECQTY_52, 
               source.RECDTE_52, 
               source.STATUS_52, source.REM1_52, source.REM2_52, 
               source.REM3_52, source.REM4_52, 
               source.CMPDTE_52);

要删除的38行在源表中至少有两个状态_52值用于这些RMANUM_52键值

MERGE QA.dbo.RMA AS target USING Touchstn02.dbo.RMA_Detail AS source 
ON (target.RMANUM_52 = source.RMANUM_52) 
WHEN MATCHED AND (source.STATUS_52 >3) 
THEN
DELETE
WHEN NOT MATCHED AND (source.STATUS_52 < 4) AND (source.RECQTY_52 > 0) 
THEN
INSERT         (RMANUM_52, RMADATE_52, CUSTID_52, RETNUM_52, RETQTY_52, 
                SERIAL_52, REPAIR_52, 
                RPLACE_52, CREDIT_52, WRKNUM_52, KEYWRD_52, RECQTY_52, 
                RECDTE_52, STATUS_52, 
                REM1_52, REM2_52, REM3_52, Comment, CMPDTE)
VALUES        (source.RMANUM_52, source.RMADTE_52, source.CUSTID_52, 
               source.RETNUM_52, 
               source.RETQTY_52, source.SERIAL_52, source.REPAIR_52, 
               source.RPLACE_52, source.CREDIT_52, 
               source.WRKNUM_52, source.KEYWRD_52, source.RECQTY_52, 
               source.RECDTE_52, 
               source.STATUS_52, source.REM1_52, source.REM2_52, 
               source.REM3_52, source.REM4_52, 
               source.CMPDTE_52);

对于给定的RMANUM_52键值：

MERGE QA.dbo.RMA AS target USING Touchstn02.dbo.RMA_Detail AS source 
ON (target.RMANUM_52 = source.RMANUM_52) 
WHEN MATCHED AND (source.STATUS_52 >3) 
THEN
DELETE
WHEN NOT MATCHED AND (source.STATUS_52 < 4) AND (source.RECQTY_52 > 0) 
THEN
INSERT         (RMANUM_52, RMADATE_52, CUSTID_52, RETNUM_52, RETQTY_52, 
                SERIAL_52, REPAIR_52, 
                RPLACE_52, CREDIT_52, WRKNUM_52, KEYWRD_52, RECQTY_52, 
                RECDTE_52, STATUS_52, 
                REM1_52, REM2_52, REM3_52, Comment, CMPDTE)
VALUES        (source.RMANUM_52, source.RMADTE_52, source.CUSTID_52, 
               source.RETNUM_52, 
               source.RETQTY_52, source.SERIAL_52, source.REPAIR_52, 
               source.RPLACE_52, source.CREDIT_52, 
               source.WRKNUM_52, source.KEYWRD_52, source.RECQTY_52, 
               source.RECDTE_52, 
               source.STATUS_52, source.REM1_52, source.REM2_52, 
               source.REM3_52, source.REM4_52, 
               source.CMPDTE_52);


状态_52值之一将小于4且数量大于0
另一行状态值将大于3

因此，在第一次运行时，插入一行，其状态_52值小于4

MERGE QA.dbo.RMA AS target USING Touchstn02.dbo.RMA_Detail AS source 
ON (target.RMANUM_52 = source.RMANUM_52) 
WHEN MATCHED AND (source.STATUS_52 >3) 
THEN
DELETE
WHEN NOT MATCHED AND (source.STATUS_52 < 4) AND (source.RECQTY_52 > 0) 
THEN
INSERT         (RMANUM_52, RMADATE_52, CUSTID_52, RETNUM_52, RETQTY_52, 
                SERIAL_52, REPAIR_52, 
                RPLACE_52, CREDIT_52, WRKNUM_52, KEYWRD_52, RECQTY_52, 
                RECDTE_52, STATUS_52, 
                REM1_52, REM2_52, REM3_52, Comment, CMPDTE)
VALUES        (source.RMANUM_52, source.RMADTE_52, source.CUSTID_52, 
               source.RETNUM_52, 
               source.RETQTY_52, source.SERIAL_52, source.REPAIR_52, 
               source.RPLACE_52, source.CREDIT_52, 
               source.WRKNUM_52, source.KEYWRD_52, source.RECQTY_52, 
               source.RECDTE_52, 
               source.STATUS_52, source.REM1_52, source.REM2_52, 
               source.REM3_52, source.REM4_52, 
               source.CMPDTE_52);

然后在下一次运行时，会触发删除，因为匹配是由RMANUM_52和源表中的状态_52进行的。这里需要技巧的是，我们要在源表的所有行（包括不属于第一次插入的行）中查找状态值。源表中有一个不同的行将RMANUM_52与状态_52>3匹配。因此，删除逻辑匹配并执行删除

MERGE QA.dbo.RMA AS target USING Touchstn02.dbo.RMA_Detail AS source 
ON (target.RMANUM_52 = source.RMANUM_52) 
WHEN MATCHED AND (source.STATUS_52 >3) 
THEN
DELETE
WHEN NOT MATCHED AND (source.STATUS_52 < 4) AND (source.RECQTY_52 > 0) 
THEN
INSERT         (RMANUM_52, RMADATE_52, CUSTID_52, RETNUM_52, RETQTY_52, 
                SERIAL_52, REPAIR_52, 
                RPLACE_52, CREDIT_52, WRKNUM_52, KEYWRD_52, RECQTY_52, 
                RECDTE_52, STATUS_52, 
                REM1_52, REM2_52, REM3_52, Comment, CMPDTE)
VALUES        (source.RMANUM_52, source.RMADTE_52, source.CUSTID_52, 
               source.RETNUM_52, 
               source.RETQTY_52, source.SERIAL_52, source.REPAIR_52, 
               source.RPLACE_52, source.CREDIT_52, 
               source.WRKNUM_52, source.KEYWRD_52, source.RECQTY_52, 
               source.RECDTE_52, 
               source.STATUS_52, source.REM1_52, source.REM2_52, 
               source.REM3_52, source.REM4_52, 
               source.CMPDTE_52);

我无法从您的示例中准确地说出您的需求，因此我不会冒险猜测修复程序。
在插入时，表上是否有一个触发器可以更新状态？编辑：我们可能需要关于哪些记录受到错误影响的更多信息。在@justiceorjustus的建议下查看记录后，两个表上都没有触发器，我注意到总是最后38行受到上部（64）的影响行从不受影响-此信息有用吗？在受影响的行中，
RMANUM_52
和
STATUS_52
的值是多少？作为创建编码期间的一般规则，在更新/删除之前始终运行select语句，以便您可以检查将删除/更新的内容。您让我走上了正确的轨道-谢谢@David Coster！实际问题是RMANUM_52不是唯一的（表中没有唯一的标识符），因此，我最后查看了两个不同的列。再次感谢-我以为大家都放弃了！我真的很高兴我能提供一些帮助：-）
MERGE QA.dbo.RMA AS target USING Touchstn02.dbo.RMA_Detail AS source 
ON (target.RMANUM_52 = source.RMANUM_52) 
WHEN MATCHED AND (source.STATUS_52 >3) 
THEN
DELETE
WHEN NOT MATCHED AND (source.STATUS_52 < 4) AND (source.RECQTY_52 > 0) 
THEN
INSERT         (RMANUM_52, RMADATE_52, CUSTID_52, RETNUM_52, RETQTY_52, 
                SERIAL_52, REPAIR_52, 
                RPLACE_52, CREDIT_52, WRKNUM_52, KEYWRD_52, RECQTY_52, 
                RECDTE_52, STATUS_52, 
                REM1_52, REM2_52, REM3_52, Comment, CMPDTE)
VALUES        (source.RMANUM_52, source.RMADTE_52, source.CUSTID_52, 
               source.RETNUM_52, 
               source.RETQTY_52, source.SERIAL_52, source.REPAIR_52, 
               source.RPLACE_52, source.CREDIT_52, 
               source.WRKNUM_52, source.KEYWRD_52, source.RECQTY_52, 
               source.RECDTE_52, 
               source.STATUS_52, source.REM1_52, source.REM2_52, 
               source.REM3_52, source.REM4_52, 
               source.CMPDTE_52);