Description:
------------
Result status for odbc_execute() is not correctly returned for CREATE TABLE statements. Tested with MySQL and PostgreSQL ODBC drivers. Execution of odbc_execute() for SELECT/UPDATE/INSERT statements doesn't have that effect.

Testing CREATE TABLE with isql utility from unixODBC correctly returns an error on second execution (assuming that table didn't exist before).

Test script:
---------------
    $stmt = odbc_prepare($db, "CREATE TABLE x(id int)");
    
    if ($stmt === false) {
        $error = true;
        $resultStr = "Query: $query\nPrepare Error: " . odbc_errormsg($db);
        echo $resultStr . "\n";
    } else {
        // Executing query (if prepare went fine)
        $result = odbc_execute($stmt, $parameterArray);
        echo $resultStr . "\n";
    }
        
    if (!$result) {
        echo "ODBC Error: " . odbc_error($db) . "\n";
        $resultStr = "Query: $query\nExecute error: " . odbc_errormsg($db);
        echo $resultStr . "\n";
        $error = true;
    }

Expected result:
----------------
Execution of the test script should create table "x" during the first execution without reporting an error. The second execution should report an error.

Actual result:
--------------
Every execution of the script reports an error:

Execute error: [unixODBC]Error while executing the query (non-fatal);
ERROR:  relation "x" already exists

The table "x" is successfully created during the first test script execution.