inner join前面的inner是什么意思
时间: 2023-09-10 14:14:47 浏览: 44
在这里,"inner"是指内连接,也被称为等值连接。内连接是一种连接操作,它只返回两个表中满足连接条件的行记录。在使用内连接时,只有当两个表中的连接条件匹配时,才会返回结果集中的行记录。这意味着只有在连接条件匹配的情况下,两个表中的行才会被联接在一起。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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