/**
* execute an SQL statement
*
* @param string $sql SQL statement to execute
* @param bool $force true to use queryF
*
* @return mixed result resouce if no error,
* true if no error but no result
* false if error encountered.
* Any error message is in $this->lastError;
*/
private function &execSql($sql, $force = false)
{
if ($force) {
$result = $this->db->queryF($sql);
} else {
$result = $this->db->query($sql);
}
if (!$result) {
$this->lastError = $this->db->error();
$this->lastErrNo = $this->db->errno();
}
return $result;
}
