or_where函数活动记录的内部 - or_where inside where function active records

or_where inside where function active records

本文关键字：记录内部活动函数 where or | 更新日期: 2023-09-27

我想问你们中是否有人知道如何在编码点火器中放置or_where？

我想创建一个如下所示的查询

select *
from table
where
(
  (in = 0 and call_in = 1) or
  (out = 0 and call_out = 1)
) and
mid = 0
ORDER BY id DESC
limit 1

我创造了这样的东西

$result = $mysql_handler->select('*')
                        ->from("table")
                        ->where(
                               array(
                                 "in"       => 0,
                                 "call_in"  => 1
                               )
                          )
                        ->or_where(
                              array(
                                 "out"      => 0,
                                 "call_out" => 1
                              )
                         )
                        ->where("mid", 0)
                        ->order_by("id", "DESC")
                        ->limit(1)
                        ->get();

但我知道这是不对的，因为这段代码会产生这样的东西

select *
from table
where
   (in = 0 and call_in = 1) or
   (out = 0 and call_out = 1) and
   mid = 0
ORDER BY id DESC
limit 1

我想将or_where放在 where 子句中，但我不确定这是否正确或如何做到这一点。请指教谢谢。

您不能根据需要组合where和or_where。 or_where可用于只需要OR查询的情况。您可以为您的解决方案尝试此操作

    $this->db->from('table');
    $this->db->select('*');
    $this->db->where('((in = 0 and call_in = 1) OR (out = 0 and call_out = 1))');
    $this->db->where("mid", 0);
    $this->db->order_by("id", "DESC");
    $this->db->limit(1);
    $result=$this->db->get();

或

$result = $mysql_handler->select('*')
        ->from("table")
        ->where('((in = 0 and call_in = 1) OR (out = 0 and call_out = 1))')            
        ->where("mid", 0)
        ->order_by("id", "DESC")
        ->limit(1)
        ->get();