我在这里有点困惑，需要一些帮助......
情况是我已经制作了三个表(fr_Leagues、fr_nations 和 fr_confeds)，我想做的就是添加一个联赛，它显示类别名称而不是带分页的 i.d。这是代码:
现已修复!
"SELECT
a.id as confed_id,
a.fr_short_name as confed_name,
b.id as nation_id,
b.fr_name as nation_name,
c.id as league_id,
c.fr_name as league_name"
." FROM fr_confeds as a
INNER JOIN fr_nations as b ON a.id = b.confed_id
INNER JOIN fr_leagues as c ON b.id = c.nation_id"
." LIMIT $paginate->start, $paginate->limit"
最佳答案
您不知道如何将不同的表链接在一起。在每个 INNER JOIN 上，您需要拥有它:
INNER JOIN fr_nations ON a.<someColumn> = b.<anotherColumn> INNER JOIN fr_leagues ON a.<someColumn> = b.<anotherColumn>
关于php - 如何INNER JOIN 两个以上的类别？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/9043547/