Échec de lecture ODBC

Bonjour,

La requête suivante provoque l'erreur "Échec de lecture ODBC" sans plus d'information :

Code:

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SELECT  (Year(DAT_LIV) & '-' & Month(DAT_LIV)) as dateliv
        , (CAST( Replace( Replace( REF2_F, 'Humidité: ', '' ), '%', '' ) as decimal)) as humidite
 
FROM mabase.dbo.NEGOCE N
WHERE (ISNULL(N.SUP, 'N') <> 'O') AND (N.AGENCE = 'NW') AND (N.VD = 'O') 
AND (NOT EXISTS (SELECT NUMBON FROM  mabase.dbo.NEGOCE_ECHT WHERE (NUMBON = N.NUMBON) AND (FLG_REF = 'O') )) 
AND ART_EXP='PLQ_EP/SA'
GROUP BY DAT_LIV, REF2_F
;