sql 问题 - V2EX

sql 问题 - V2EX

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V2EX = way to explore

V2EX 是一个关于分享和探索的地方

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这是一个创建于 2780 天前的主题，其中的信息可能已经有所发展或是发生改变。

+-------------+---------+ | 列名 | 类型 | +-------------+---------+ | PersonId | int | | FirstName | varchar | | LastName | varchar | +-------------+---------+ 按名字查询用户，不存在返回 null, 这个 sql 咋写

1 条回复 2018-06-26 22:28:54 +08:00

1

edk24

2018 年 6 月 26 日

在你的业务逻辑中写, 如果数据库查询结果为 null. 为它设定应该"默认结果"并返回 /输出

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