Instruction SQL CASE

Question

J'ai les requêtes suivantes et je veux les mettre dans une instruction CASE sql donc je n'aurais qu'une requête mais je ne sais pas comment faire ça. Quelqu'un peut-il m'aider?

IF (SELECT EtlLoadId 
FROM ssislogs.audit.processcontrol 
WHERE SubjectArea = 'UaqaFacetsImp') > 0 
SELECT pc.SrcFileName + ' - '+ CONVERT(VARCHAR(10), pc.[RecordCount]) AS FacetsImpCount 
FROM ssislogs.audit.processcontrol pc left outer join 
Uaqa.LettersAndCardsExports lc 
on pc.etlloadid = lc.etlloadid 
    WHERE pc.subjectarea = 'UaqaFacetsImp' 
ELSE 
SELECT 'No input file' AS FacetsImpCount 

---

SELECT pc.subjectarea AS FacetsRjctFile 
FROM ssislogs.audit.processcontrol pc left outer join 
Uaqa.LettersAndCardsExports lc 
on pc.etlloadid = lc.etlloadid 
    WHERE pc.subjectarea = 'UaqaFacetsRjct' 

---

SELECT pc.subjectarea AS FacetsPvsFile 
FROM ssislogs.audit.processcontrol pc left outer join 
Uaqa.LettersAndCardsExports lc 
on pc.etlloadid = lc.etlloadid 
    WHERE pc.subjectarea = 'UaqaFacetsPvs' 

Merci

Answer 1

Propably un UNION-Query aider:

SELECT 'FacetsRjctFile' as Type, pc.subjectarea 
FROM ssislogs.audit.processcontrol pc left outer join 
Uaqa.LettersAndCardsExports lc 
on pc.etlloadid = lc.etlloadid 
    WHERE pc.subjectarea = 'UaqaFacetsRjct' 

UNION 

SELECT 'FacetsPvsFile' as Type, pc.subjectarea 
FROM ssislogs.audit.processcontrol pc left outer join 
Uaqa.LettersAndCardsExports lc 
on pc.etlloadid = lc.etlloadid 
    WHERE pc.subjectarea = 'UaqaFacetsPvs'