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Service CRUD 接口和 mapper 的 CRUD 接口哪里不一样
source link: https://www.v2ex.com/t/867205
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我目前就知道他俩返回值不一样，还有什么不一样嘛。具体是我在使用的时候发现 service.updateById 这个方法更新了为空的字段，(我确定实体类没有加过滤的注解)
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