OR clause in Zend DB update?

Question

I'd like to do a Zend db update with an OR clause. What would be the equivalent statement to:

UPDATE mail
SET message_read = 1
WHERE id = 5
OR id = 10

Answer 1

When calling Zend_Db_Adapter::update(), multiple WHERE conditions will automatically be combined using AND (line 698 of Zend/Db/Adapter/Abstract.php in function _whereExpr).

You can get around this by creating your own Zend_Db_Expr which you will use as the WHERE condition and it will be left untouched.

For example:

$where[] = new Zend_Db_Expr(
        $table->getAdapter()->quoteInto('id = ?', 5) . ' OR ' .
        $table->getAdapter()->quoteInto('id = ?', 10)
);

// resulting expression:
//   WHERE (id = 5 OR id = 10)

$table->update($data, $where);

If you had additional WHERE conditions, they would be combined with the OR condition by an AND.

Example:

$where[] = new Zend_Db_Expr(
        $table->getAdapter()->quoteInto('id = ?', 5) . ' OR ' .
        $table->getAdapter()->quoteInto('id = ?', 10)
);
$where[] = $table->getAdapter()->quoteInto('type = ?', 'sometype');

// resulting expression:
//   WHERE (id = 5 OR id = 10) AND (type = 'sometype')