Discussion :

[Roach-]

Bon j'ai fait une requête SQL pour effacer une ligne dans une table d'association. Cependant je ne peu pas croire qui n'y a pas plus simple que ceci :

SQL : Microsoft SQL CE

Code :

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DELETE 
FROM vehasssection
WHERE ID_Vehlisting =
(
SELECT vehasssection.ID_Vehlisting
FROM vehasssection 
JOIN vehlocation ON vehlocation.ID = vehasssection.ID_Location
JOIN vehsection ON vehsection.ID = vehasssection.ID_Section
JOIN vehposition ON vehposition.ID = vehasssection.ID_Position
WHERE vehasssection.ID_Vehlisting = '3'
AND vehlocation.Name = 'Exterior'
AND vehsection.Name = 'LeftFront'
AND vehposition.Name = 'Fender'
)
AND ID_Location =
(
SELECT vehasssection.ID_Location
FROM vehasssection 
JOIN vehlocation ON vehlocation.ID = vehasssection.ID_Location
JOIN vehsection ON vehsection.ID = vehasssection.ID_Section
JOIN vehposition ON vehposition.ID = vehasssection.ID_Position
WHERE vehasssection.ID_Vehlisting = '3'
AND vehlocation.Name = 'Exterior'
AND vehsection.Name = 'LeftFront'
AND vehposition.Name = 'Fender'
)
AND ID_Section =
(
SELECT vehasssection.ID_Section
FROM vehasssection 
JOIN vehlocation ON vehlocation.ID = vehasssection.ID_Location
JOIN vehsection ON vehsection.ID = vehasssection.ID_Section
JOIN vehposition ON vehposition.ID = vehasssection.ID_Position
WHERE vehasssection.ID_Vehlisting = '3'
AND vehlocation.Name = 'Exterior'
AND vehsection.Name = 'LeftFront'
AND vehposition.Name = 'Fender'
)
AND ID_Position =
(
SELECT vehasssection.ID_Position
FROM vehasssection 
JOIN vehlocation ON vehlocation.ID = vehasssection.ID_Location
JOIN vehsection ON vehsection.ID = vehasssection.ID_Section
JOIN vehposition ON vehposition.ID = vehasssection.ID_Position
WHERE vehasssection.ID_Vehlisting = '3'
AND vehlocation.Name = 'Exterior'
AND vehsection.Name = 'LeftFront'
AND vehposition.Name = 'Fender'
)

Je trouve cela gros pour une simple supression de ligne.