bonjour les ami(e)s développeurs,
Je développe un programme de gestion des réservations des terrains de tennis. Cependant lorsque je veux modifier une réservation, j'ai des soucis.
Voici ma table concerné
CREATE TABLE "RÉSERVER"
( "NUMTERRAINRÉSERVER" NUMBER(*,0) NOT NULL ENABLE,
"NUMADHÉRENTRÉSERVER" NUMBER(*,0) NOT NULL ENABLE,
"DATERÉSERVER" DATE NOT NULL ENABLE,
"HEURERÉSERVER" NUMBER NOT NULL ENABLE,
CONSTRAINT "PK_RESERVER" PRIMARY KEY ("NUMTERRAINRÉSERVER", "NUMADHÉRENTRÉSERVER", "DATERÉSERVER", "HEURERÉSERVER" ) ENABLE,
CONSTRAINT "FK_3" FOREIGN KEY ("NUMTERRAINRÉSERVER" )
REFERENCES "TERRAINS" ("NUMTERRAIN" ) ENABLE,
CONSTRAINT "FK_4" FOREIGN KEY ("NUMADHÉRENTRÉSERVER" )
REFERENCES "ADHÉRENTS" ("NUMADHÉRENT" ) ENABLE
)
Problème:
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<![endif]-->Lorsque je modifie une réservation d’un adhérent (adhérent présent que dans une seule
occurrence dans la table réserver) ça marche. Cependant lorsque je modifie
une réservation d’un adhérent (adhérent
présent dans plusieurs occurrences
dans la table réserver), ça ne marche pas.
Voici le code C#:
public static void update_resa(string numAdherent, string numTerrain, string date, string heure)
{ reqSql
"UPDATE réserver SET numTerrainRéserver '" + numTerrain + "', dateRéserver = '" + date + "', heureRéserver = '" + heure + "' WHERE numAdhérentRéserver = '" + numAdherent + "'";
command = new OracleCommand(reqSql, connect);
command.CommandType = CommandType.Text;
command.ExecuteNonQuery();
}
Erreur:
ORA-00001: violation de contrainte unique (GESTION_TENNIS.PK_RESERVER)
Je ne comprend pas. J'ai regardé et vérifié, ma clef primaire n'est pas la même. De plus dans mon traitement je fais des vérifications pour savoir si la réservation est déjà prise.
Merci pour votre aide.
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