zf2 make a join between two different databases

Question

I am trying to make a join between two tables placed in different databases with Zend Framework 2.

The first table is called users and is stored in

Answer 1

As Dan has answered, but for Zend 2.3 you should change line 742 in file Zend\Db\Sql\Select.php from

$joinName = $platform->quoteIdentifier($joinName);

to

$joinName = $platform->quoteIdentifierInFragment($joinName);

and line 680 from

$name = $platform->quoteIdentifier($name);

to

$name = $platform->quoteIdentifierInFragment($name);

Obs: These are only the lines that I could identify, and may not be a complete list.