语法

join ( mixed join [, mixed $condition = null [, string $type = 'INNER']] )

示例

别名

Db::table('think_artist')
->alias('a')
->join('think_work w','a.id = w.artist_id')
->join('think_card c','a.card_id = c.id')
->select();

Db::table('think_artist')
->alias('a')
->join('__WORK__ w','a.id = w.artist_id')
->join('__CARD__ c','a.card_id = c.id')
->select();

$join = [
    ['think_work w','a.id=w.artist_id'],
    ['think_card c','a.card_id=c.id'],
];Db::table('think_user')->alias('a')->join($join)->select();

全称

Db::table('think_user')->join('__WORK__','__ARTIST__.id = __WORK__.artist_id')->select();

right方式

Db::table('think_user')->alias('a')->join('word w','a.id = w.artist_id','RIGHT')->select();

表名是子查询

$subsql = Db::table('think_work')
        ->where(['status'=>1])
        ->field('artist_id,count(id) count')
        ->group('artist_id')
        ->buildSql();
        
Db::table('think_user')
    ->alias('a')
    ->join([$subsql=> 'w'], 'a.artist_id = w.artist_id')
    ->select();