這篇文章主要介紹了thinkPHP簡單實現多個子查詢語句的方法,結合實例形式對比分析了thinkPHP中子查詢語句的具體實現技巧,需要的朋友可以參考下
本文實例講述了thinkPHP簡單實作多個子查詢語句的方法。分享給大家供大家參考,具體如下:
sql語句博大精深
理解好sql語句,就能用好thinkphp等框架中的資料庫操作
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;
這裡面有兩個子查詢語句,其實子查詢語句也是表,只不過是存在記憶體中罷了。
thinkphp實作:
$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);
其實thinkphp框架對sql的封裝,最後還是要拼湊成sql語句。
相關推薦:
#################### #####
以上是thinkPHP簡單實作多個子查詢語句的方法的詳細內容。更多資訊請關注PHP中文網其他相關文章!