选择查询具有意外的多个记录（MS Access）

Question

I may just be tired, but I can't seem to figure out what is happening. I have two queries. Query 1 has 10 fields. Query 2 has 5 fields. Fields 1 through 3 are the same in both queries. I am trying to write a select query and simple add field 5 from Query2 to Query1 so my result should be Query1 with an additional field (Query2.field5).

I join the first 3 fields from both queries and choose select all records in query1 and only those in query2 that match. I don't know sql, so I use query designer. I expect to get the same number of records that I have from query 1 but instead I have 3 times or more. Can someone tell me what I am doing wrong. I even tried reversing the joins but still seem to get the same extra records.

Thanks in advance.

Here is the query:

The fields that are in common are DivisionName , SupplierID = VendorID and CommodityName .

SELECT [Part Revenue Exposed Query P1].DivisionName, 
        [Part Revenue Exposed Query P1].CommodityName, 
        [Part Revenue Exposed Query P1].SupplierName, 
        [Part Revenue Exposed Query P1].PartNumber, 
        [Part Revenue Exposed Query P1].PartDescription, 
        [Part Revenue Exposed Query P1].BUCode, 
        [Part Revenue Exposed Query P1].ProductLine, 
        [Vendor Risk Score Query].VendorScore

FROM [Part Revenue Exposed Query P1] LEFT JOIN [Vendor Risk Score Query] 

ON ([Part Revenue Exposed Query P1].DivisionName = [Vendor Risk Score Query].DivisionName) 
    AND ([Part Revenue Exposed Query P1].SupplierID = [Vendor Risk Score Query].VendorID) 
    AND ([Part Revenue Exposed Query P1].CommodityName = [Vendor Risk Score Query].CommodityName);

Answer 1

Check you join condition.

   AND ([Part Revenue Exposed Query P1].SupplierID = [Vendor Risk Score Query].VendorID) 

Is supplier to vendor correct?

You said the first three fields are the same. But it only shows two the same.

Answer 2

This is most probably because there are multiple records in [Vendor Risk Score Query] matching the condition in [Part Revenue Exposed Query P1]. ie if corresponding to one record of [Part Revenue Exposed Query P1] with values:

DivisionName ='TestDiv', SupplierID = 1, CommodityName = 'TestCommodity'

there can be multiple records in [Vendor Risk Score Query] with values

DivisionName ='TestDiv', SupplierID = 1, CommodityName = 'TestCommodity'

then it will return more records than the number of records in [Part Revenue Exposed Query P1]