thinkPHP简单实现多个子查询语句的方法

2021-04-02 20:11牛逼的霍啸林 PHP教程

这篇文章主要介绍了thinkPHP简单实现多个子查询语句的方法,结合实例形式对比分析了thinkPHP中子查询语句的具体实现技巧,需要的朋友可以参考下

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);