Comment sélectionner dans le jeu de résultats UNION ALL opération

Question

SELECT * FROM 
(SELECT BAR.DIAGNOSES FROM FOO INNER JOIN BAR ON FOO.AN = BAR.AN WHERE FOO.ADMWARD IN (16,17) AND (BAR.DIAGNOSES IS NOT NULL) 
UNION ALL 
SELECT BAR.UNDERLYINGCAUSE FROM FOO INNER JOIN BAR ON FOO.AN = BAR.AN WHERE FOO.ADMWARD IN (16,17) AND (BAR.UNDERLYINGCAUSE IS NOT NULL) 
UNION ALL 
SELECT BAR.UNDERLYINGCAUSE2 FROM FOO INNER JOIN BAR ON FOO.AN = BAR.AN WHERE FOO.ADMWARD IN (16,17) AND (BAR.UNDERLYINGCAUSE2 IS NOT NULL) 
UNION ALL 
SELECT BAR.UNDERLYINGCAUSE3 FROM FOO INNER JOIN BAR ON FOO.AN = BAR.AN WHERE FOO.ADMWARD IN (16,17) AND (BAR.UNDERLYINGCAUSE3 IS NOT NULL) 
UNION ALL 
SELECT BAR.UNDERLYINGCAUSE4 FROM FOO INNER JOIN BAR ON FOO.AN = BAR.AN WHERE FOO.ADMWARD IN (16,17) AND (BAR.UNDERLYINGCAUSE4 IS NOT NULL) 
UNION ALL 
SELECT BAR.UNDERLYINGCAUSE5 FROM FOO INNER JOIN BAR ON FOO.AN = BAR.AN WHERE FOO.ADMWARD IN (16,17) AND (BAR.UNDERLYINGCAUSE5 IS NOT NULL) 
UNION ALL 
SELECT BAR.COMPLICATIONS FROM FOO INNER JOIN BAR ON FOO.AN = BAR.AN WHERE FOO.ADMWARD IN (16,17) AND (BAR.COMPLICATIONS IS NOT NULL) 
UNION ALL 
SELECT BAR.COMPLICATIONS2 FROM FOO INNER JOIN BAR ON FOO.AN = BAR.AN WHERE FOO.ADMWARD IN (16,17) AND (BAR.COMPLICATIONS2 IS NOT NULL) 
UNION ALL 
SELECT BAR.COMPLICATIONS3 FROM FOO INNER JOIN BAR ON FOO.AN = BAR.AN WHERE FOO.ADMWARD IN (16,17) AND (BAR.COMPLICATIONS3 IS NOT NULL) 
UNION ALL 
SELECT BAR.COMPLICATIONS4 FROM FOO INNER JOIN BAR ON FOO.AN = BAR.AN WHERE FOO.ADMWARD IN (16,17) AND (BAR.COMPLICATIONS4 IS NOT NULL) 
UNION ALL 
SELECT BAR.COMPLICATIONS5 FROM FOO INNER JOIN BAR ON FOO.AN = BAR.AN WHERE FOO.ADMWARD IN (16,17) AND (BAR.COMPLICATIONS5 IS NOT NULL) 
UNION ALL 
SELECT BAR.OTHERDIAGNOSES FROM FOO INNER JOIN BAR ON FOO.AN = BAR.AN WHERE FOO.ADMWARD IN (16,17) AND (BAR.OTHERDIAGNOSES IS NOT NULL) 
UNION ALL 
SELECT BAR.OTHERDIAGNOSES2 FROM FOO INNER JOIN BAR ON FOO.AN = BAR.AN WHERE FOO.ADMWARD IN (16,17) AND (BAR.OTHERDIAGNOSES2 IS NOT NULL) 
UNION ALL 
SELECT BAR.OTHERDIAGNOSES3 FROM FOO INNER JOIN BAR ON FOO.AN = BAR.AN WHERE FOO.ADMWARD IN (16,17) AND (BAR.OTHERDIAGNOSES3 IS NOT NULL) 
UNION ALL 
SELECT BAR.OTHERDIAGNOSES4 FROM FOO INNER JOIN BAR ON FOO.AN = BAR.AN WHERE FOO.ADMWARD IN (16,17) AND (BAR.OTHERDIAGNOSES4 IS NOT NULL) 
UNION ALL 
SELECT BAR.OTHERDIAGNOSES5 FROM FOO INNER JOIN BAR ON FOO.AN = BAR.AN WHERE FOO.ADMWARD IN (16,17) AND (BAR.OTHERDIAGNOSES5 IS NOT NULL)) 

Ce résultat Msg 102, niveau 15, état 1, ligne 32 Syntaxe incorrecte près de ')'.

Answer 1

Mais bien sûr, ce que vous voulez dire est "UNPIVOT".

SELECT * FROM 
    (SELECT FOO.ADMWARD, BAR.* FROM FOO INNER JOIN BAR ON FOO.AN = BAR.AN 
     WHERE FOO.ADMWARD IN (16,17) 
    ) t 
    UNPIVOT 
    (Diag FOR PropType in (DIAGNOSES 
     , UNDERLYINGCAUSE 
     , UNDERLYINGCAUSE2 
     , UNDERLYINGCAUSE3 
     , UNDERLYINGCAUSE4 
     , UNDERLYINGCAUSE5 
     , COMPLICATIONS 
     , COMPLICATIONS2 
     , COMPLICATIONS3 
     , COMPLICATIONS4 
     , COMPLICATIONS5 
     , OTHERDIAGNOSES 
     , OTHERDIAGNOSES2 
     , OTHERDIAGNOSES3 
     , OTHERDIAGNOSES4 
     , OTHERDIAGNOSES5 
     ) 
    ) u; 

Vous ne savez pas exactement ce que vous voulez appeler les colonnes. Vous voudrez probablement trouver une sous-requête appropriée pour mettre 't'. Et cela va gérer les valeurs NULL pour vous aussi.

Answer 2

Ajouter un alias après la dernière PAREN:

select 
    * 
from 
    (.... unions go here ...) a 

Vous n'avez pas besoin d'envelopper cela dans un select * pour obtenir le jeu de résultats, mais je suppose que vous utilisez comme un sous-requête. Lorsque vous définissez une sous-requête en tant que jeu de résultats, vous devez l'aliaser, sinon les colonnes ne savent pas d'où elles viennent.

Answer 3

Vous n'avez pas besoin de l'extérieur select * from - il suffit de mettre tous les choix avec union tous entrelacés - cela devrait fonctionner.