Posted By

lonergan123 on 09/11/09

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Last Edited at 09/11/09 12:45pm

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Allergy / Allergen Counts

/ Published in: SQL

Return counts for each drug / drug category allergen

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SELECT Allergen1.Code, Allergen1.TypeCode, Allergen1.Description, Allergen1.ExternalDrugCode, Counts.AllergyCount
FROM CV3Allergen Allergen1
INNER JOIN
        (SELECT Allergen.GUID, COUNT(NULLIF(Allergy.AllergenGUID,0)) AllergyCount
        FROM CV3Allergen Allergen
        LEFT JOIN CV3AllergyDeclaration Allergy
        ON Allergy.AllergenGUID = Allergen.GUID
  AND Allergy.Status = 'Active'
  AND Allergen.TypeCode IN ('Drug', 'Drug Category')
        GROUP BY Allergen.GUID) Counts
ON Allergen1.GUID = Counts.GUID
ORDER BY 5 DESC, 1

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