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使用Zend_Db_Table_Abstract对WHERE子句进行分组

zend-db-table zend-framework

33

Mark · 技术社区 · 16 年前

$sql = $table->select()
             ->where('company_id = ?', $company_id)
             ->where('client_email = ?', $client_email)
             ->orWhere('client_email_alt = ?', $client_email);

这给了我这个:

SELECT `clients`.* FROM `clients` WHERE (company_id = '1') AND (client_email = 'email@address.com') OR (client_email_alt = 'email@address.com')

但我需要它给我这个,在OR语句分组的地方:

SELECT `clients`.* FROM `clients` WHERE (company_id = '1') AND ((client_email = 'email@address.com') OR (client_email_alt = 'email@address.com'))

5 回复 | 直到 16 年前

1

57

jason 16 年前

为了实现这一点,您必须在对 where

如果条件的两个值相同,则可以执行以下操作:

$select->where('client_email = ? OR client_email_alt = ?', $client_email)

如果字符串中有多个占位符,则DB适配器的 quoteInto 方法将用提供的值替换所有占位符。

如果你需要分组 OR 由于每个字段的值不同,您必须手动引用这些值。这有点复杂:

$select->where(
    $db->quoteInto('client_email = ?', $email1) . ' OR ' . $db->quoteInto('client_email_alt = ?', $email2)
); // $db is your instance of Zend_Db_Adapter_*
   // You can get it from a Zend_Db_Table_Abstract 
   //subclass by calling its getAdapter() method

2

6

Volvox 13 年前

你可以用 getPart() 获取WHERE语句,然后连接子查询。

$select->where('client_email = ?', $client_email)
       ->orWhere('client_email_alt = ?', $client_email);

$subquery = $select->getPart(Zend_Db_Select::WHERE);
$select ->reset(Zend_Db_Select::WHERE);
$select ->where('company_id = ?', $company_id)
        ->where(implode(' ',$subquery));

3

1

edi9999 11 年前

看 http://framework.zend.com/apidoc/2.2/classes/Zend.Db.Sql.Predicate.Predicate.html#nest

$table->select()
     ->where(['company_id'=> $company_id])
     ->nest
         ->where('client_email = ?', $client_email)
         ->or
         ->where('client_email_alt = ?', $client_email)
     ->unnest();

4

1

Ernesto Allely 10 年前

我需要合并AND/OR语句,但有条件地包括OR语句,仅在某些情况下添加它们。这个解决方案是对我所做的工作的改编,基于对公认答案的小修改。

$sql = $table->select()
         ->where('company_id = ?', $company_id);

$orWhereClauses = [];
// We could add a conditional statement to add this statement
$orWhereClauses[] = $db->quoteInto('client_email = ?', $email1);
// Same applies to this statement
$orWhereClauses[] = $db->quoteInto('client_email_alt = ?', $email2);

$sql->where(implode(" OR ", $orWhereClauses));

5

0

Truth4oll 11 年前

首先,您可以生成子查询,然后获取“WHERE”部分并插入到主查询中

$subquery = $db->select();
$subquery->orWhere('a>10');
$subquery->orWhere('b<20');
etc..

$subquery = $subquery->getPart(Zend_Db_Select::WHERE);
$select->where(implode(' ',$subquery));