実装しようとしているストアド プロシージャは次のとおりです。
Alter PROCEDURE pro_worst_supplier_test
@datey nvarchar(4), @datem nvarchar(2)
AS
BEGIN
-- SET NOCOUNT ON added to prevent extra result sets from
-- interfering with SELECT statements.
SET NOCOUNT ON;
-- Insert statements for procedure here
select y.CompanyName from (SELECT s.CompanyName,(select min(t.b) from (select (round(sum(OD.Quantity * (1-OD.Discount) * OD.UnitPrice),0)) as b from [Order Details] group by ProductID) t) as q
FROM ((((Products p
inner join [Order Details] OD on p.ProductID=OD.ProductID)
inner join Categories c on p.CategoryID=c.CategoryID)
inner join Suppliers s on p.SupplierID=s.SupplierID)
inner join Orders o on o.OrderID=od.OrderID)
where c.CategoryName='Produce' AND SUBSTRING(CONVERT(nvarchar(22), o.OrderDate, 111),1,4)=@datey AND SUBSTRING(CONVERT(nvarchar(22),o.OrderDate, 111),6,2)=@datem
group by s.CompanyName) y
where q=(select MIN(q)from y)
END
GO
で実行しようとしたところ
exec proc_worst_supplier_test '1998','04'
エラーが発生しました
オブジェクト名 'y' が無効です