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MySQL 1022 can't write duplicate key in table
source link: https://segmentfault.com/a/1190000039682308
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MySQL 1022 can't write duplicate key in table
发布于 今天 10:55
MySQL 1022 can't write duplicate key in table
不同数据表所设置的外键名称重复了。
例子：
myorder订单表和cart购物车表都有外键userId，关联user表中的主键userId。且二者外键名一样，则报错。
修改一下外键名称即可。（比如这里修改cart表的）
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