Assume that table SPart contains the following rows:
SuppNo | PartNo |
---|---|
100 | P2 |
101 | P1 |
102 | P1 |
103 | P2 |
Assume that table SLocation contains the following rows:
SuppNo | SuppLoc |
---|---|
100 | London |
101 | London |
102 | Toronto |
103 | Tokyo |
To then select supplier number (SuppNo) for suppliers located in London (SuppLoc) who supply part number P1 (PartNo), use the following request:
SELECT SuppNo FROM SLocation WHERE SuppLoc = 'London' INTERSECT SELECT SuppNo FROM SPart WHERE PartNo = 'P1';
The result of this request is:
SuppNo ------ 101