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我有一个需求,我需要插入记录具有不同的哈希值为特定的EmpID。以下是分段和主记录的一些示例值。分段程序每周都会获取值,并需要根据ID和散列值将值插入主程序中,并且在处理所有记录时,表将被截断。SQL服务器查询获取数据
Week 1 in staging: EMpd ID Hash Value
1000 1; 2000 2
2 records gets inserted in master
Week2 in staging: EMPID hashvalues
1000 -3
2000 2
3000 5
Master should have 1000 1;1000 -3; 2000 2; 3000 5
Week 3 in staging: EMPID hashvalues
1000 -5
2000 -9
3000 5
Master should have 1000 1;1000 -3; 1000 -5;2000 2; 2000 -9;3000 5
I have tried doing
insert into EMP_MASTER (EMPID,EMPNAME,hashValue)
select mas.*,stg.hashvalue FROM [EMP_master] mas (nolock)
INNER JOIN [EMP_staging] stg (nolock) ON mas.EMPID = stg.EMPID
WHERE mas.hashvalue != stg.hashvalue and not exists
(select 1 from [EMP_Master](nolock)
where EMPID=stg.EMPID and hashValue=stg.hashvalue) order by EMPID;
这给出1000的重复值。任何人都可以帮助我吗? 谢谢 MR