public function queryDataByModel(&$model,$sqlstring,$limitNum=1,$returnFieldArray=true){//采用TP的model方式来查询数据



$data=$model->field($returnFieldArray)->where($sqlstring)->limit($limitNum)->select();
echo $model->getLastSql();

if(empty($data))
{
return 0;
}

return $data;

}

输出的查询语句是：together.groups.find({"$where":{"code":"groupID= 5","scope":[]}}, {"ownerID":1}).limit(1) 自动多了一个ownerID:1的限定，，，