Utilisation d'une table temporaire dans une vue

Question

Je voudrais vraiment créer une vue.

Je sais que vous ne pouvez pas utiliser les tables temporaires dans les vues MSSQL2005. Sans réécrire le sql, y a-t-il quelque chose d'évident que j'ai raté?

Le plan de sauvegarde consiste à utiliser un proc stocké.

Vive

select * into #temp from vwIncidents 

SELECT  vwIncidents.incidentcode, employeecode, EMPOS.POS_L4_CDA as areaAtTimeOfIncident 
into #temp1 
FROM   vwIncidents 
INNER JOIN EMPOS ON vwIncidents.employeecode = EMPOS.DET_NUMBERA 
WHERE EMPOS.POS_STARTC < vwIncidents.incidentdate 
AND  (EMPOS.POS_ENDD > vwIncidents.incidentdate OR EMPOS.POS_ENDD IS NULL) 
order by incidentcode 

select #temp.*, #temp1.areaAtTimeOfIncident from #temp 
left outer join #temp1 on #temp.incidentcode = #temp1.incidentcode 
and #temp.employeecode = #temp1.employeecode 
order by incidentcode 

Answer 1

HAV vous avez essayé de réécrire cela sans l'utilisation de tables de temp?

Quelque chose comme

select temp.*, 
     temp1.areaAtTimeOfIncident 
from (
      select * 
      from vwIncidents 
     ) temp left outer join 
     (
      SELECT vwIncidents.incidentcode, 
        employeecode, 
        EMPOS.POS_L4_CDA as areaAtTimeOfIncident 
      FROM vwIncidents INNER JOIN 
        EMPOS ON vwIncidents.employeecode = EMPOS.DET_NUMBERA 
      WHERE EMPOS.POS_STARTC < vwIncidents.incidentdate 
      AND  ( 
         EMPOS.POS_ENDD > vwIncidents.incidentdate 
         OR EMPOS.POS_ENDD IS NULL 
        ) 
     ) temp1  on temp.incidentcode = temp1.incidentcode 
       and temp.employeecode = temp1.employeecode 
order by incidentcode 

Answer 2

Utilisez l'instruction WITH.

Answer 3

Vous pouvez utiliser un CTE:

WITH cteIncidents (incidentcode, employeecode, areaAtTimeOfIncident) 
AS 
(
SELECT 
    vwIncidents.incidentcode, employeecode, EMPOS.POS_L4_CDA as areaAtTimeOfIncident 
FROM 
    vwIncidents 
INNER JOIN EMPOS ON vwIncidents.employeecode = EMPOS.DET_NUMBERA 
WHERE EMPOS.POS_STARTC < vwIncidents.incidentdate 
AND  (EMPOS.POS_ENDD > vwIncidents.incidentdate OR EMPOS.POS_ENDD IS NULL) 
) 

SELECT 
    incidentcode, employeecode, areaAtTimeOfIncident 
FROM 
    cteIncidents 
left outer join vwIncidents on vwIncidents.incidentcode = cteIncidents.incidentcode 
and vwIncidents.employeecode = cteIncidents.employeecode 
ORDER BY 
    incidentcode 

(pourrait modifier la jonction à un droit, mais vous voyez l'idée ...)