我有一个表,该表的主键在其他几个表中使用,并且对其他表有几个外键。
CREATE TABLE location (
locationID INT NOT NULL AUTO_INCREMENT PRIMARY KEY
...
) ENGINE = InnoDB;
CREATE TABLE assignment (
assignmentID INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
locationID INT NOT NULL,
FOREIGN KEY locationIDX (locationID) REFERENCES location (locationID)
...
) ENGINE = InnoDB;
CREATE TABLE assignmentStuff (
...
assignmentID INT NOT NULL,
FOREIGN KEY assignmentIDX (assignmentID) REFERENCES assignment (assignmentID)
) ENGINE = InnoDB;
问题是,当我尝试删除外键列之一(即locationIDX)时,它给了我一个错误。
“错误1025(HY000):重命名错误”
如何在没有出现此错误的情况下将列删除到上面的分配表中?