如何在查询生成器 phalcon 中对值列求和答案

【问题标题】：How to sum value column in query builder phalcon如何在查询生成器 phalcon 中对值列求和
【发布时间】：2020-10-12 03:18:19
【问题描述】：

我想在框架phalcon 中对查询生成器中的值求和，这是我的代码生成器

$builder = new Builder();
$builder
  ->columns([
    "TABLE1.ID_TABLE1",
    "count(distinct TABLE2.SKPD_SUB1_ID) as RESULT_1",
    "count(distinct TABLE3.SKPD_SUB1_ID) as RESULT_2",
    "count(distinct TABLE_4.SKPD_SUB1_ID) as RESULT_3",
    //in there i want to add RESULT_1 + RESUL_2 + RESULT_3 
  ])
  ->from("TABLE1")
  ->leftjoin("TABLE2", "TABLE2.SKPD_SUB1_ID=TABLE1.SKPD_SUB1_ID")
  ->leftjoin("TABLE3", "TABLE3.SKPD_SUB1_ID=TABLE1.SKPD_SUB1_ID")
  ->leftjoin("TABLE_4", "TABLE_4.SKPD_SUB1_ID=TABLE1.SKPD_SUB1_ID")
  ->where("TABLE1.SKPD_ID='$skpd_id'");

$result = $builder - > getQuery() - > execute();

【问题讨论】：

标签： php mysql sql phalcon phalcon-orm

【解决方案1】：

你可以试试这样的：

select sum(a.cnt) 
  from (
          select count(...) as cnt 
          from ... 
          group by ...
       ) as a

【讨论】：