DEDE 标签源码 使用问题?

[xt_yxl]

在DEDE上做一些修改,需要加几个表,现在是加了表之后想调这个表的信息. 用DEDE 标签源码 死活调不出数据来.这个问题几天都没搞出来. 兄弟姐妹们帮帮看看咋回事呢. 多加点分


新建标签源码

<?php
if(!defined('DEDEINC'))
{
	exit("Request Error!");
}
require_once(DEDEINC.'/dedevote.class.php');
function lib_index_market(&$ctag,&$refObj)
{
	global $dsql;
	$attlist="marketid|,row|4";
	FillAttsDefault($ctag->CAttribute->Items,$attlist);
	extract($ctag->CAttribute->Items, EXTR_SKIP);

	$innertext = trim($ctag->GetInnertext());
	$revalue = '';
	if(empty($marketid)) $marketid = 0;
	$dsql->SetQuery('Select MarketId,Username,MarketClass,Infovalid,measure,Structure,category,Quote,
            Storey,Floor,Address,AreaDescription,Cname,AddTime,IsOver,Rent,Price,AreaC,
            Residential,Availability,SmallImg From dede_Fw_Market where MarketClass = '.$marketid.' and (' . time() . '-AddTime) < Infovalid and IsOver = 0 order by AddTime desc limit 0,' . $row);
	$dsql->Execute();
    echo 'Select MarketId,Username,MarketClass,Infovalid,measure,Structure,category,Quote,
            Storey,Floor,Address,AreaDescription,Cname,AddTime,IsOver,Rent,Price,AreaC,
            Residential,Availability,SmallImg From dede_Fw_Market where MarketClass = '.$marketid.' and (' . time() . '-AddTime) < Infovalid and IsOver = 0 order by AddTime desc limit 0,' . $row;
	$ctp = new DedeTagParse();
	$ctp->SetNameSpace("market","[","]");
	$ctp->LoadSource($innertext);
	while($row = $dsql->GetArray())
	{
		foreach($ctp->CTags as $tagid=>$ctag){
			if(!empty($row[$ctag->GetName()])){ $ctp->Assign($tagid,$row[$ctag->GetName()]); }
		}
		$revalue .= $ctp->GetResult();
	}
	return $revalue;
}
?>

模版内

{dede:index_market marketid=0 row=4}
                      <tr>
                        <td><a href="/house/fw_Build/fw_market_show.php?MarketId=[market:MarketId/]" target="_blank">[market:Address function='cn_substr(@me,50)'/]</a></td>
                        <td width="60" align="center">[market:Structure/]</td>
                        <td width="60" align="center">[market:Quote/]万元</td>
                      </tr>
{/dede:index_market}

[tirbe]

数据都没取出来，标签怎么会有数据呢！