Peut-être quelque chose comme ça :
D'abord quelques données de test :
CREATE TABLE Flight(FlightId int,FlightNumber varchar(10))
CREATE TABLE FlightCapacity(ID int,FlightIdRef int,ClassIdRef int,Capacity int)
CREATE TABLE Class(ClassId int,Name varchar(10))
INSERT INTO Class VALUES(1,'Y'),(2,'A')
INSERT INTO Flight VALUES(1,123),(2,423)
INSERT INTO FlightCapacity VALUES(1,1,1,10),(2,1,2,20),(3,2,2,10)
Ensuite, vous devez obtenir les colonnes uniques comme ceci :
DECLARE @cols VARCHAR(MAX)
SELECT @cols = COALESCE(@cols + ','+
QUOTENAME('ClassNameAndCapacity'+CAST(ClassId AS VARCHAR(10))),
QUOTENAME('ClassNameAndCapacity'+CAST(ClassId AS VARCHAR(10))))
FROM
Class
Le delcaring et exécuter le sql dynamique :
DECLARE @query NVARCHAR(4000)=
N'SELECT
*
FROM
(
SELECT
Flight.FlightNumber,
Class.Name+CAST(FlightCapacity.Capacity AS VARCHAR(100)) AS ClassName,
''ClassNameAndCapacity''+CAST(Class.ClassId AS VARCHAR(10)) AS ClassAndCapacity
FROM
Flight
JOIN FlightCapacity
ON Flight.FlightId=FlightCapacity.FlightIdRef
JOIN Class
ON FlightCapacity.ClassIdRef=Class.ClassId
) AS p
PIVOT
(
MAX(ClassName)
FOR ClassAndCapacity IN('[email protected]+')
) AS pvt'
EXECUTE(@query)
Et puis dans mon cas je vais déposer les tables créées :
DROP TABLE Flight
DROP TABLE Class
DROP TABLE FlightCapacity