Salut ,
Pourriez-vous m'aider à transformer l'UPDATE suivant en MERGE.
Merci

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UPDATE COMPTES C
SET C.valeur = (SELECT  MIN(AFF.valeur) KEEP(DENSE_RANK FIRST ORDER BY AFF.no_seq)
                          FROM REF_IMM_T     RIT,
                               SITE                 STE,
                               AGENCE             AGC,
                               AFFECTA           AFF
                         WHERE 
                               C.no_ref = RIT.no_ref
                           AND C.cd_ss  = RIT.cd_ss
                           AND RIT.cd_mm = NVL(AFF.cd_mm, RIT.cd_mm)
                           AND C.no_ref  =  STE.no_ref
                           AND C.cd_site = STE.cd_site
                           AND AGC.no_ref = 800
                           AND C.no_ref = AGC.no_ref
                           AND C.code_RIT = AGC.code_RIT
                           AND C.indic = NVL(AFF.indic, C.indic)
			   AND RIT.status = 'A'
                             )
WHERE 
C.no_ref = 800
and C.status = 'B'  ;