Mysql查询
LEFT JOIN matches as m
ON sched.league_id = m.leagueid
AND sched.starttime >= m.start_time
AND (sched.team_a_id = m.radiant_team_id AND sched.team_b_id = m.dire_team_id)
OR (sched.team_b_id = m.radiant_team_id AND sched.team_a_id = m.dire_team_id)
Laravel Eloquent
->leftJoin('matches as m', function($join){
$join->on('league_id','=','m.leagueid');
$join->on('starttime','=','m.start_time');
// @TODO AND (sched.team_a_id = m.radiant_team_id AND sched.team_b_id = m.dire_team_id)
// @TODO OR (sched.team_b_id = m.radiant_team_id AND sched.team_a_id = m.dire_team_id)
})
问题
- 如何左加入 (某事=某事AND某事=某事)OR(某事=某事AND某事=某事)使用Laravel Eloquent
最佳答案
你的 MySQL 查询首先是错误的,我确信这就是你想要的:
LEFT JOIN matches as m
ON sched.league_id = m.leagueid
AND sched.starttime >= m.start_time
AND (
sched.team_a_id = m.radiant_team_id AND sched.team_b_id = m.dire_team_id
OR sched.team_b_id = m.radiant_team_id AND sched.team_a_id = m.dire_team_id
)
现在,不幸的是 Laravel 无法构建此连接。
所以唯一的方法是:
->leftJoin('matches as m', function ($j) {
$j->on('league_id','=','m.leagueid')
->on('starttime','=','m.start_time')
->on(sched.team_a_id = m.radiant_team_id)
->on(sched.team_b_id = m.dire_team_id)
->orOn('league_id','=','m.leagueid')
->on('starttime','=','m.start_time')
->on(sched.team_b_id = m.radiant_team_id)
->on(sched.team_a_id = m.dire_team_id);
})
或使用原始语句(注意DB::raw
内的括号):
->leftJoin('matches as m', function ($j) {
$j->on('league_id','=','m.leagueid')
->on('starttime','=','m.start_time')
->on(
DB::raw( '(sched.team_a_id',
'=',
DB::raw('m.radiant_team_id AND sched.team_b_id = m.start_time'
.'OR sched.team_b_id = m.radiant_team_id AND sched.team_a_id = m.start_time)')
);
})
关于mysql - Laravel 4.2 Eloquent 关系 leftjoin ON 复杂,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/27200205/