• thinkphp实现多个子查询语句


    sql语句博大精深

    理解好sql语句,就能用好thinkphp等框架中的数据库操作

    原sql

    SELECT a.*,b.* from (SELECT a.id as opener_id,a.name,sum(c.money) as bonus_money,c.year,c.month from sh_opener a 
    LEFT JOIN sh_opener_bonus b on a.id = b.opener_id 
    LEFT JOIN sh_incentive c on b.incentive_id = c.id
    where a.agent_id = 3 and a.status = 1 and c.year = 2015 and c.month = 11
    GROUP BY a.id,c.year,c.month) a 
    LEFT JOIN (SELECT a.id as payment_id,a.opener_id,a.money as payment_money,a.trode_number from sh_opener_bonus_payment a
    where a.year = 2015 and a.`month` = 11 and a.agent_id = 3) b
    on a.opener_id = b.opener_id;

    这里面有两个子查询语句,其实子查询语句也是表,只不过是存在内存中罢了。

    thinkphp实现

    $useYear = date('Y',strtotime('last month'));
            $this->assign('useYear',$useYear);
            $useMonth = date('m',strtotime('last month'));
            $this->assign('useMonth',$useMonth);
    
            // 获取上一月人员的奖金金额
            // 子查询1
            $whereSub1['a.agent_id'] = $this->agent_id;
            $whereSub1['a.status'] = 1;
            $whereSub1['c.year'] = $useYear;
            $whereSub1['c.month'] = $useMonth;
            $subQuery1 = M()->table('sh_opener a')->join('sh_opener_bonus b on a.id = b.opener_id')->join('sh_incentive c on b.incentive_id = c.id')->where($whereSub1)->group('a.id,c.year,c.month')->field('a.id,a.name,sum(c.money) as bonus_money,c.year,c.month')->select(false); 
    
            // 子查询2
            $whereSub2['a.agent_id'] = $this->agent_id;
            $whereSub2['a.year'] = $useYear;
            $whereSub2['a.month'] = $useMonth;
            $subQuery2 = M()->table('sh_opener_bonus_payment a')->where($whereSub2)->field('a.id as payment_id,a.opener_id,a.money as payment_money,a.trode_number')->select(false);
            
            $list = M()->table($subQuery1.' a')->join($subQuery2.' b on a.id = b.opener_id')->select();
            $this->assign('list',$list);

    其实thinkphp框架对sql的封装,最终还是要拼凑成sql语句。

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  • 原文地址:https://www.cnblogs.com/jiqing9006/p/5021968.html
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