Description:
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OFFSET in `ingres_query` doesn't work

Reproduce code:
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<? 
$dbLink = ingres_connect($dbDatabase, $dbUsername, $dbPassword) or die("error ingres_connect"); 
$dbQuery = " SELECT field1 FROM myTable OFFSET 10"; 
$dbResult = ingres_query($dbLink, $dbQuery) or die("error ingres_query"); 

echo "ingres_num_rows: ".ingres_num_rows($dbResult)."<br>";

while ($dbRow = ingres_fetch_array($dbResult))
{
echo ".$dbRow["field1"]."<br>";
}
?>

Expected result:
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List of results starting with record number 10.

Actual result:
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List of results starting with record number 1