A problem in returning a table with Null On it

Question

i want my function to return a A table with some values

I must fix something in the update but i don\'t know what this is the function FngetTableH BELOW

Answer 1

your query "Select CLOSING_PRICE from Historique H inner..." may be returning more than 1 value.

Answer 2

In your innermost query I think MAX(@Date) should be MAX(DATE_NEGO), which might explain why the closing price query is returning multiple results.

There is still the possibility of multiple results, so you might need to account for that You could select max(closing_price) if it doesn't matter which, though I suspect it might, in which case you need to do some ordering to select the correct price to use.

EDIT: Try this:

ALTER FUNCTION [dbo].[FnGetTableH]
(
    @Date DATETIME
)
RETURNS @Listeab_ TABLE
(
    CLOSING_PRICE MONEY,
    IdValeur INT
)
AS
BEGIN
    WITH prices AS
    (
        SELECT IdValeur,
            CLOSING_PRICE,
            ROW_NUMBER() OVER (PARTITION BY IdValuer ORDER BY DATE_NEGO DESC) rn
        FROM Historique
        WHERE DATE_NEGO <= @Date
    )
    INSERT @Listeab_(CLOSING_PRICE, IdValeur)
    SELECT DISTINCT ISNULL(p.CLOSING_PRICE, 0),
        h.IdValeur
    FROM Historique h
    LEFT OUTER JOIN prices p ON h.IdValeur = p.IdValeur
        AND p.rn = 1
        RETURN;
END;

Answer 3

Use top to select 1 record. May be it will solve your error.

select Distinct 0 , IdValeur
From Historique
Update @Listeab_
Set CLOSING_PRICE = (Select  Top 1 CLOSING_PRICE
from Historique H
inner join (Select MAX(@Date) As DATEDU,IdValeur FROM Historique
where 
DATE_NEGO<= @Date 
group by IdValeur ) L2
on 
H.DATE_NEGO=L2.DATEDU and H.IdValeur=L2.IdValeur
)