按多列删除 Codeigniter 中的多行

Question

我有一个关联数组，例如：array(3) {  [0]=>  array(2) {    ["userId"]=>    string(1) "10"    ["customerId"]=>    string(3) "1809"  }  [1]=>  array(2) {    ["userId"]=>    string(1) "13"    ["customerId"]=>    string(3) "1094"  }  [2]=>  array(2) {    ["userId"]=>    string(1) "45"    ["customerId"]=>    string(2) "210"  }}我正在尝试从数据库中删除这些行，但找不到要运行的正确 Codeigniter 查询。生成的查询应该是这样的：DELETE FROM tableWHERE (userId,customer_id) IN ( (10,1809),(10,1809),(45,210) )如果我试试这个$this->db->where_in( '(userId, customer_id)', array( array(10,1809), array(10,1809), array(45,210) ));$this->db->delete('table');die(var_dump($this->db->last_query()));我明白了，这是不正确的，当然：DELETE FROM `table`WHERE (userId, customer_id) IN(Array, Array, Array)

Answer 1

将关联的数组值获取到单个数组中，然后将其传递给查询

$assoicative_array = array(array(10,20,30));

    $ids=array();

    foreach($assoicative_array as $key =>$value ){

        $ids[]=$value;

    }

    $this->db->where_in('userId',$ids);

    $this->db->where_in('customer_id',$ids);

    $this->db->delete('table');

    die(var_dump($this->db->last_query()));

Answer 2

这是我尝试过的并且有效：

foreach ( $data as $row )

{

    $userIds[] = $row['userId'];

    $customerIds[] = $row['customerId'];

}

$this->db->where_in('userId', $userIds);

$this->db->where_in('customer_id', $customerIds);

$this->db->delete('table');

这将删除行，生成的查询是：

DELETE FROM `table`

WHERE `userId` IN('10', '11', '54')

AND `customer_id` IN('1809', '1904', '201')