0
我想改写这个SQL来laravel 4查询生成器与MAX()
SELECT
*
FROM
SolutionFile
WHERE
SolutionFile.group_id = $group_id and
version = (
SELECT
max(s1.version)
FROM
SolutionFile s1
WHERE
s1.group_id = $group_id
)
我写了这个请求
SolutionFile::where('group_id', '=', $group_id)
->whereRaw('version = (select max(`version`) from files where group_id = ' . $group_id . ')')->get();
这完美的作品,但我想重写它“laravel方式“没有whereRaw。 我试过这个请求
SolutionFile::where('group_id', '=', $group_id)
->where(function($query) use($group_id) {
return $query->where('version', '=', function() use($group_id) {
return SolutionFile::where('group_id', '=', $group_id)->max('version');
});
});
但它返回一个空集。
有什么方法可以重写吗?我上次请求在哪里出错?