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Extract unmatched records from Access

Hi,

I have two tables with this structure

tblSOM
=======
ID Contract Cliente Region
1 765 A R1
1 1567 D R1
2 766 B R2
3 777 C R3
4 888 D R4
5 9999 E R5

tblContracts
========

ID Contract Cliente Region
1 765 A R1
1 1567 D R1
1 99990 Z R2
2 11 A R3
2 766 B R2
3 777 C R3
3 23234 18 R2
4 888 D R4
5 999901 E R5

So, I would like to get the all contracts that not exits on the table tblContracts
The match criteria is the ID
For example on this 2 tables my final result would be the list of the contract that not in on table tblSOM

qryFinal
ID Contract Cliente Region
1 99990 Z R2
2 11 A R3
3 23234 18 R2
4 888 D R4
5 999901 E R5

ralmada

something like this?

select * from tblContract
left join tblSOM on tblContract.ID = tblSOM.ID
where tblContract.ID is null

ralmada

Sorry,
select * from tblContract
left join tblSOM on tblContract.ID = tblSOM.ID
where tblSOM.ID is null

Sharath S

you can try this.

SELECT *
  FROM tblSOM 
 WHERE tblSOM.[Contract] NOT EXISTS (SELECT 1 FROM tblContract WHERE tblSOM.[Contract] = tblContract.[Contract])

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Sharath S

typo in last post. try this.

SELECT *
  FROM tblSOM 
 WHERE NOT EXISTS (SELECT 1 FROM tblContract WHERE tblSOM.[Contract] = tblContract.[Contract])

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gfranco

ASKER

Why 1 on this select? (SELECT 1 FROM tblContract WHERE tblSOM.[Contract] = tblContract.[Contract])

ralmada

I don't think there is a need to create a subquery. Have you tried mine?
This query will produce what you are expecting for: "final result would be the list of the contract that not in on table tblSOM"

select * from tblContract
left join tblSOM on tblContract.ID = tblSOM.ID
where tblSOM.ID is null

gfranco

ASKER

But you know what
It could be something like this

1 ID will be related to 1 or many contracts
But 1 contract is only be related to 1 ID.

I hope this clarify any doubts.

Sharath S

Both ralmada and my queries will give you the expected result. The 1 in the SELECT clause is nothing but I am ticking the matching record. By using NOT EXISTS, I am selecting unmatched (unticked) records.

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ralmada

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gfranco

ASKER

This is the resutl that i was looking for.

Thanks.

SELECT tblSomContracts.ContractNumber, tblSomContracts.[Service Level], tblSomContracts.[End Customer], tblSomContracts.[BID to partner], tblSomContracts.Partner, tblSomContracts.Region INTO tbl
FROM tblSomContracts LEFT JOIN StrategicAccounts ON tblSomContracts.ContractNumber = StrategicAccounts.Contract
WHERE (((tblSomContracts.[BID to partner]) In (Select distinct BillToPartner from StrategicAccounts)) AND ((StrategicAccounts.Contract) Is Null));

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SOLUTION

Sharath S

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