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Message Posted: Wed, 02 Sep 2009 @ 20:30:33 GMT

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To use the same/similar SQL, try adding a WHERE clause, i.e.

     Select
       P.patient_name
     , P.Patient_age
     , P.Patient_weight
     , A.CountWarfarin
     , B.CountHeprin
     , P.patient_id
     FROM patient P
     , (Select Count(*) AS CountWarfarin from drug_taken WHERE drug_name='Warfarin')  A
     , (Select Count(*) AS CountHeprin from drug_taken WHERE drug_name='Heprin') B
     WHERE
     A.patient_id=p.patient_id AND
     B.patient_id=p.patient_id

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