MySQL Workbench 1064 语法错误

Question

MySQL Workbench 创建了这段代码，而不是我。我只是使用了 GUI。

Operation failed: There was an error while applying the SQL script to the database.
Executing:
ALTER TABLE `isometr1_keyboard`.`records` 
ADD CONSTRAINT `fk_records_layout_id`
  FOREIGN KEY ()
  REFERENCES `isometr1_keyboard`.`layouts` ()
  ON DELETE NO ACTION
  ON UPDATE NO ACTION;

ERROR 1064: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ')
  REFERENCES `isometr1_keyboard`.`layouts` ()
  ON DELETE NO ACTION
  ON UPDAT' at line 3
SQL Statement:
ALTER TABLE `isometr1_keyboard`.`records` 
ADD CONSTRAINT `fk_records_layout_id`
  FOREIGN KEY ()
  REFERENCES `isometr1_keyboard`.`layouts` ()
  ON DELETE NO ACTION
  ON UPDATE NO ACTION

我不明白错误在哪里。也不明白为什么 GUI 创建的代码有问题。

我做错了吗？

Answer 1

列的数据类型不匹配。这会导致 MySQL Workbench 创建格式不正确的代码。