Catalin Cernat Catalin Cernat - 19 days ago 5
SQL Question

SQL IsNull with SELECT subquery in a query

I have this:

ISNULL(FPONO.[Replan Ref_ No_],(SELECT DISTINCT PO.[Replan Ref_ No_]
FROM NAV_Vermorel_Live.dbo.[SC Vermorel SRL$Production Order] AS PO
WHERE SH.[External Document No_] = PO.[Old Prod_ Order No_] AND PO.[Source No_] = SL.No_))


This piece of SQL is part of big wall of text, which works without the IsNULL check. With IsNUll it outputs the error bellow. Could anyone point me in a right direction? I have null on that specific column, and I can get the right results from another table. I don't know how to do it.

Subquery returned more than 1 value. This is not permitted when the subquery follows =, !=, <, <= , >, >= or when the subquery is used as an expression.

SELECT SL.[Document No_],
SL.[Sell-to Customer No_],
SL.Type,
SL.[Line No_],
ISNULL(FPONO.[Replan Ref_ No_],(SELECT DISTINCT PO.[Replan Ref_ No_]
FROM NAV_Vermorel_Live.dbo.[SC Vermorel SRL$Production Order] AS PO
WHERE SH.[External Document No_] = PO.[Old Prod_ Order No_] AND PO.[Source No_] = SL.No_)),
SL.No_,
SL.[Location Code],
SL.[Posting Group],
SL.[Shipment Date],
SL.Description,
SL.[Unit of Measure],
SL.Quantity,
SL.[Outstanding Quantity],
SL.[Qty_ to Invoice],
SL.[Qty_ to Ship],
SL.[Unit Price],
SL.Amount,
SL.[Net Weight],
SL.[Outstanding Amount],
SL.[Qty_ Shipped Not Invoiced],
SL.[Quantity Shipped],
SL.[Quantity Invoiced],
SL.[Gen_ Prod_ Posting Group],
SL.[Line Amount],
SL.[Item Category Code],
SL.[Requested Delivery Date],
SL.[Shipping Time],
SL.[Piece Index],
SL.Urgenta,
SL.[Document Type],
SH.[External Document No_],
Cust.Name
FROM NAV_Vermorel_Live.dbo.[SC Vermorel SRL$Sales Line] AS SL INNER JOIN NAV_Vermorel_Live.dbo.[SC Vermorel SRL$Sales Header] AS SH ON SL.[Document No_] = SH.No_
INNER JOIN NAV_Vermorel_Live.dbo.[SC Vermorel SRL$Customer] AS Cust ON SL.[Sell-to Customer No_] = Cust.No_
left JOIN (SELECT
RE1."Entry No_",
RE1."Item No_",
RE1."Quantity (Base)",
RE1."Source Subtype",
RE1."Source ID",
RE1."Source Type",
RE1."Source Ref_ No_",
RE2."Source Ref_ No_" AS SRN,
RE2."Source ID" As SalesOrder,
PO.[Replan Ref_ No_]
FROM NAV_Vermorel_Live.dbo."SC Vermorel SRL$Reservation Entry" AS RE1 JOIN NAV_Vermorel_Live.dbo."SC Vermorel SRL$Production Order" AS PO
ON RE1."Source ID" = PO.No_ right JOIN
(SELECT
RE."Entry No_",
RE."Item No_",
RE."Quantity (Base)",
RE."Source Subtype",
RE."Source ID",
RE."Source Ref_ No_"
FROM NAV_Vermorel_Live.dbo."SC Vermorel SRL$Reservation Entry" AS RE
WHERE RE."Source Subtype"=1 AND RE.[Source Type] = 37) AS RE2 ON RE1.[Entry No_] = RE2.[Entry No_]
WHERE (RE1."Source Type" = 5406 OR RE1."Source Type" = 5407) AND (RE1."Source Subtype" = 2 OR RE1."Source Subtype" = 3))
AS FPONO ON (SL.[Document No_] = FPONO.[SalesOrder]) AND (FPONO."SRN" = SL.[Line No_]) AND (FPONO.[Item No_] = SL.[No_])
WHERE (SL.[Outstanding Quantity] > 0) AND (SL.[Location Code] = 'MACH FIN' OR
SL.[Location Code] = 'MAGAZIN NC' OR
SL.[Location Code] = 'MARFURI')

Answer

The message is simple: it is possible to find more than one [Replan Ref_ No_] per [Old Prod_ Order No_] and [Source No_] in your table [SC Vermorel SRL$Production Order].

Either make sure your table doesn't contain duplicates (with a unique constraint) or change the subquery to return one value only, e.g. replace

SELECT DISTINCT PO.[Replan Ref_ No_]

with

SELECT MIN(PO.[Replan Ref_ No_])
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