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我試着在我的數據庫中創建一個表「SIGNATURE」我想要這個表有一個雙主鍵,並將外鍵約束添加到兩個主鍵引用表「TRAITEMENT」MySql 5.6.17錯誤#1215 - 無法添加外鍵約束
CREATE TABLE TRAITEMENT (
id INTEGER NOT NULL,
dateHeurePrevue DATETIME NOT NULL,
commentaire LONGTEXT,
dateValidation TIMESTAMP,
CONSTRAINT PK PRIMARY KEY (id,dateHeurePrevue),
CONSTRAINT FK_traitement_consigne FOREIGN KEY (id) REFERENCES consigne(id)) ENGINE=InnoDB;
create unique index id_dateheureprevue on traitement(id, dateheureprevue);
CREATE TABLE SIGNATURE (
id INTEGER NOT NULL,
idPersonne INTEGER NOT NULL,
dateTimeTraitement DATETIME NOT NULL,
retard INTEGER,
motifRetard INTEGER,
heureEffectiveTraitement DATETIME NOT NULL,
CONSTRAINT PK PRIMARY KEY (id,dateTimeTraitement),
CONSTRAINT FK_id FOREIGN KEY (id) REFERENCES traitement(id),
CONSTRAINT FK_idPersonne FOREIGN KEY (idPersonne) REFERENCES personne(id),
CONSTRAINT FK_motifRetard FOREIGN KEY (motifRetard) REFERENCES retard(id),
CONSTRAINT FK_dateTimeTraitement FOREIGN KEY (dateTimeTraitement) REFERENCES traitement(dateHeurePrevue))ENGINE=InnoDB;
create unique index id_dateTimetraitement on signature(id, dateTimeTraitement);
顯然,(我想刪除它,它工作得很好)的問題來源於此forign鍵:
CONSTRAINT FK_dateTimeTraitement FOREIGN KEY (dateTimeTraitement) REFERENCES traitement(dateHeurePrevue)
我不明白,我不看到任何類型的衝突,鍵... 如果有人能幫我解決這個問題LEM ...
在此先感謝
難道是因爲主要的你外鍵語句只引用一部分表的主鍵? – Osuwariboy
檢查您的整理類型 – wahmal