Busca PHP + Mysql

Ola pessoal,

Estou com problemas no codigo:

<?php
if (!function_exists("GetSQLValueString")) {
function GetSQLValueString($theValue, $theType, $theDefinedValue = "", $theNotDefinedValue = "")

{

 $theValue = get_magic_quotes_gpc() ? stripslashes($theValue) : $theValue;

 $theValue = function_exists("mysql_real_escape_string") ? mysql_real_escape_string($theValue) : mysql_escape_string($theValue);

 switch ($theType) {
 case "text":
 $theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
 break;
 case "long":
 case "int":
 $theValue = ($theValue != "") ? intval($theValue) : "NULL";
 break;
 case "double":
 $theValue = ($theValue != "") ? "'" . doubleval($theValue) . "'" : "NULL";
 break;
 case "date":
 $theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
 break;
 case "defined":
 $theValue = ($theValue != "") ? $theDefinedValue : $theNotDefinedValue;
 break;
 }
 return $theValue;
}
}

$currentPage = $_SERVER["PHP_SELF"];

$maxRows_Recordset1 = 5;
$pageNum_Recordset1 = 0;
if (isset($_GET['pageNum_Recordset1'])) {
 $pageNum_Recordset1 = $_GET['pageNum_Recordset1'];
}
$startRow_Recordset1 = $pageNum_Recordset1 * $maxRows_Recordset1;

$colname_Recordset1 = "-1";
if (isset($_GET['vendedor,mes,ano'])) {
 $colname_Recordset1 = $_GET['vendedor,mes,ano'];
}
mysql_select_db($database_data, $data);
$query_Recordset1 = sprintf("SELECT * FROM os WHERE vendedor,mes,ano LIKE %s", GetSQLValueString($colname_Recordset1 . "%", "text"));
$query_limit_Recordset1 = sprintf("%s LIMIT %d, %d", $query_Recordset1, $startRow_Recordset1, $maxRows_Recordset1);
$Recordset1 = mysql_query($query_limit_Recordset1, $data) or die(mysql_error());
$row_Recordset1 = mysql_fetch_assoc($Recordset1);

if (isset($_GET['totalRows_Recordset1'])) {
 $totalRows_Recordset1 = $_GET['totalRows_Recordset1'];

} else {

 $all_Recordset1 = mysql_query($query_Recordset1);
 $totalRows_Recordset1 = mysql_num_rows($all_Recordset1);
}
$totalPages_Recordset1 = ceil($totalRows_Recordset1/$maxRows_Recordset1)-1;

$queryString_Recordset1 = "";
if (!empty($_SERVER['QUERY_STRING'])) {
 $params = explode("&", $_SERVER['QUERY_STRING']);
 $newParams = array();
 foreach ($params as $param) {
 if (stristr($param, "pageNum_Recordset1") == false &&
 stristr($param, "totalRows_Recordset1") == false) {
 array_push($newParams, $param);
 }
 }
 if (count($newParams) != 0) {
 $queryString_Recordset1 = "&" . htmlentities(implode("&", $newParams));
 }
}
$queryString_Recordset1 = sprintf("&totalRows_Recordset1=%d%s", $totalRows_Recordset1, $queryString_Recordset1);
?>

O problema ta nesse código:

$colname_Recordset1 = "-1";
if (isset($_GET['vendedor,mes,ano'])) {
 $colname_Recordset1 = $_GET['vendedor,mes,ano'];
}
mysql_select_db($database_data, $data);
$query_Recordset1 = sprintf("SELECT * FROM os WHERE vendedor,mes,ano LIKE %s", GetSQLValueString($colname_Recordset1 . "%", "text"));

Geralmente esse código funciona assim:

$colname_Recordset1 = "-1";
if (isset($_GET['ano'])) {
 $colname_Recordset1 = $_GET['ano'];
}
mysql_select_db($database_data, $data);
$query_Recordset1 = sprintf("SELECT * FROM os WHERE ano LIKE %s ORDER BY ano ASC", GetSQLValueString($colname_Recordset1 . "%", "text"));

no primeiro código, da erro de sintax.

o que tenho que mudar no primeiro código para poder dar certo?

Se alguem puder ajudar

Desde já agradeço.