Description:
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ingres_num_rows = 0 if use ingres_query without parameter


System information.
APACHE HTTP SERVER: 2.2.17
PHP Version: 5.3.4
INGRES version rel: II 9.2.0 (int.w32/143)
PHP EXT: php_ingres.dll for PHP-5.3.2/Ingres-9.2.0-b143

Reproduce code:
---------------
<?
//ERROR: ingres_num_rows = 0
$dbLink = ingres_connect($dbDatabase, $dbUsername, $dbPassword) or die("error ingres_connect");
$dbQuery = " UPDATE myTable SET myDate = DATE('now') WHERE myId = 1 ";
$result = ingres_query($dbLink, $dbQuery) or die("error ingres_query");
echo ingres_num_rows($result)."<br>"; // return 0

//ERROR: ingres_num_rows = 1
$dbLink = ingres_connect($dbDatabase, $dbUsername, $dbPassword) or die("error ingres_connect");
$dbQuery = " UPDATE myTable SET myDate = ? WHERE myId = ? ";
$dbParams[] = date("d.m.Y H:i:s");
$dbParams[] = 1;
$dbTypes = "di";
$result = ingres_query($dbLink, $dbQuery, $dbParams, $dbTypes) or die("error ingres_query");
echo ingres_num_rows($result)."<br>"; // return 1
?>

Expected result:
----------------
ingres_num_rows = 1

Actual result:
--------------
ingres_num_rows = 0