yii的多表查询

• 获取用户发布消息的指定消息id的总和点赞数
  • Yii

       $productIds = ['2260', '2262', '2263', '2268', '2269'];
       $plSql = Like::find()->where([
       'pId' => $pIds,
                'isLike' => 1
       ])->select('pId,count(id) c')
       ->groupBy('pId')->createCommand()->getRawSql();
    
        $messages = Message::find()
                ->innerJoin("({$plSql} ) as pl", "msg.id = pl.pId")
                ->alias('msg')->groupBy('msg.customerId')
                ->select('msg.customerId,SUM(pl.c) as s')
                ->createCommand()->getRawSql();

     

  • MySQL

    SELECT
        `msg`.`customerId`,
        SUM(pl.c) AS s
    FROM
        `message` `msg`
    INNER JOIN (
        SELECT
            `pId`,
            count(id) c
        FROM
            `like`
        WHERE
            (
                `pId` IN (
                    '2260',
                    '2262',
                    '2263',
                    '2268',
                    '2269'
                )
            )
        AND (`isLike` = 1)
        GROUP BY
            `pId`
    ) AS pl ON msg.id = pl.customerId
    GROUP BY
        `msg`.`customerId`

     

来源：https://www.cnblogs.com/fatRabbit-/p/11937076.html