Description:
------------
Using PDO DBLIB driver to connect to MSSQL server each SELECT query I've tried this far returns a valid resultset but PDOStatement::rowCount() always returns int(0).

PDO::exec() returns the correct row count, however.

Reproduce code:
---------------
<?php
$pdo   = new PDO(...);
$query = "SELECT 1+1";
$stmt  = $pdo->query($query);

var_dump($stmt->rowCount());
var_dump($stmt->fetchColumn());
var_dump($pdo->exec($query));

?>

Expected result:
----------------
int(1)
string(1) "2"
int(1)

Actual result:
--------------
int(0)
string(1) "2"
int(1)