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Update and rename 作业3:这两个query,用join 能不能写? to 作业3:这两个query,用join 能不能写?.md
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作业3:这两个query,用join 能不能写? renamed to 作业3:这两个query,用join 能不能写?.md

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@@ -8,11 +8,4 @@ select sal from t_employee2 WHERE ename='SMITH');
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select * from t_employee2 WHERE (sal, job) = (
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select sal,job from t_employee2 where ename = 'smith');
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```
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#### 2.用join的写法
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**执行命令如下:**
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```SQL
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```
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##### 执行上面SQL语句结果显示如图所示:
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![](https://github.com/BiubiuOoo/Homework-of-MySQL/blob/master/images/26.png?raw=true)
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#### 我感觉可以用join写出来,但是感觉比这个更复杂,研究了很久,没研究出来该怎么写,老师可以讲讲吗?:)

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