zend framework - Grouping WHERE clauses with Zend_Db_Table_Abstract

Question

Does anyone know of a way to group where clauses with Zend_Db? Basically I have this query

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

Which is giving me this:

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

But I need it to give me this, where the OR statement is grouped:

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

Answer 1

In order to achieve this, you have to construct the grouped clause within a single call to the where method.

If both values of conditions are the same, you can do this:

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

If there are multiple placeholders within the string, the DB adapter's quoteInto method will replace all placeholders with the provided value.

If you need to group an OR with different values for each field, you have to manually quote the values. It's a bit more complex:

$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