thinkPHP简单实现多个子查询语句的方法

本文实例讲述了thinkPHP简单实现多个子查询语句的方法。分享给大家供大家参考，具体如下：

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。

更多关于thinkPHP相关内容感兴趣的读者可查看本站专题：《ThinkPHP入门教程》、《thinkPHP模板操作技巧总结》、《ThinkPHP常用方法总结》、《codeigniter入门教程》、《CI(CodeIgniter)框架进阶教程》、《Zend FrameWork框架入门教程》、《smarty模板入门基础教程》及《PHP模板技术总结》。

希望本文所述对大家基于ThinkPHP框架的PHP程序设计有所帮助。