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230问答网 > select fname from employee where CHARINDEX(✀{0}✀,LOWER(fname)) = 1

select fname from employee where CHARINDEX(✀{0}✀,LOWER(fname)) = 1

2025-03-28 02:45:49

推荐回答（1个）

回答1：

employee 是表名称，a是employee 的别名为了使用起来方便
同样jobs b 中 jobs 是表名称，b 是 jobs 表的别名
这条语句是查询满足fname字段值等于{0}并且employee表的job_id和jobs表的job_id相等的条件的所有employee中所有字段和jobs表中 job_desc字段的数据

搂主的SQL基础比较薄弱，可以看看相关书籍。

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