select s.name,s.course,s.grade from student as s inner join student as t on s.name=t.namewhere s.courset.course 我想知道这段代码最后两句是什么意思?为什么又把student as t .

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select s.name,s.course,s.grade from student as s inner join student as t on s.name=t.namewhere s.courset.course 我想知道这段代码最后两句是什么意思?为什么又把student as t .
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select s.name,s.course,s.grade from student as s inner join student as t on s.name=t.namewhere s.courset.course 我想知道这段代码最后两句是什么意思?为什么又把student as t .
select s.name,s.course,s.grade from student as s inner join student as t on s.name=t.name
where s.courset.course 我想知道这段代码最后两句是什么意思?为什么又把student as t .

select s.name,s.course,s.grade from student as s inner join student as t on s.name=t.namewhere s.courset.course 我想知道这段代码最后两句是什么意思?为什么又把student as t .
本表与本表链接查询嘛

select s.name,s.course,s.grade from student as s inner join student as t on s.name=t.namewhere s.courset.course 我想知道这段代码最后两句是什么意思?为什么又把student as t . what's yuor name? What’s your name? What's your name? what's yuor name? what's yuor name? What's ( ) name? what‘s your name what,s you name? What's name?bdnsbjsbdbs Father's Family Name what' s his name? What's his name? what's yuo name? what's you name? what's you name? his name s中文 What's her name?