这个查询语句应该怎么写才正确

$sns=$db->field('DISTINCT(dname)' AS 'd_name','COUNT(dname)' AS 'tjs')->where(array('lid'=>intval($_GET['id']),'islottery'=>1))->GROUP('dname')->order('tjs DESC')->select();

回复讨论(解决方案)

表??，????，查?後?果。
你要提供?些才可以知道?句怎??啊。

DISTINCT 是关键字，而不是函数
不能这样用：DISTINCT(dname)
用了也没效果
但可以放在聚类函数中，比如 count(DISTINCT dname) 统计 dname 有多少种状态

这是我想要的，但是还是一只菜鸟，不知该怎么写!

public function exportTJ(){		//$objReader = PHPExcel_IOFactory::createReader('Excel5');		header("Content-Type: text/html; charset=utf-8");		header("Content-type:application/vnd.ms-execl");		header("Content-Disposition:filename=tongji.xls");		//   以下\t代表横向跨越一格，\n 代表跳到下一行，可以根据自己的要求，增加相应的输出相，要和循环中的对应哈		//字段		$letterArr=explode(',',strtoupper('a,b'));		$arr=array(		array('en'=>'d_name','cn'=>'门店名称'),		array('en'=>'tjs','cn'=>'领取次数'),		);		$chengItem=array('piaomianjia','shuifei','yingshoujine','yingfupiaomianjia','yingfushuifei','yingfujine','dailishouru','fandian','jichangjianshefei','ranyoufei');		$i=0;		$fieldCount=count($arr);		$s=0;		//thead		foreach ($arr as $f){			if ($s<$fieldCount-1){				echo iconv('utf-8','gbk',$f['cn'])."\t";			}else {				echo iconv('utf-8','gbk',$f['cn'])."\n";			}			$s++;		}		//		$db=M('Lottery_record');		$sns=$db->field('DISTINCT(dname) AS d_name,COUNT(dname) AS tjs')->where(array('lid'=>intval($_GET['id']),'islottery'=>1))->GROUP('dname')->order('tjs DESC')->select();		//$sns=$db->where(array('lid'=>intval($_GET['id']),'islottery'=>1))->order('tjs DESC')->select(DISTINCT(dname) AS d_name, COUNT(dname) AS tjs);		//$sns=array('select DISTINCT(dname) AS d_name, COUNT(dname) AS tjs from $db where 'lid'==intval($_GET['id']) and 'islottery'==1 GROUP BY dname ORDER BY tjs DESC');		if ($sns){			if ($sns[0]['token']!=$this->token){				exit('no permission');			}			foreach ($sns as $sn){				$j=0;				foreach ($arr as $field){					$fieldValue=$sn[$field['en']];					switch ($field['en']){						default:							break;											case 'd_name':							$fieldValue=iconv('utf-8','gb2312',$fieldValue);							break;					}					if ($j<$fieldCount-1){						echo $fieldValue."\t";					}else {						echo $fieldValue."\n";					}					$j++;				}				$i++;			}		}		exit();	}

field('dname AS d_name,COUNT(dname) AS tjs')
GROUP('d_name')

麻烦版主再帮我看看，怎么是这个结果呢

public function exportTJ(){
//$objReader = PHPExcel_IOFactory::createReader('Excel5');
header("Content-Type: text/html; charset=utf-8");
header("Content-type:application/vnd.ms-execl");
header("Content-Disposition:filename=tongji.xls");
//   以下\t代表横向跨越一格，\n 代表跳到下一行，可以根据自己的要求，增加相应的输出相，要和循环中的对应哈
//字段
$letterArr=explode(',',strtoupper('a,b'));
$arr=array(
array('en'=>'d_name','cn'=>'门店名称'),
array('en'=>'tjs','cn'=>'领取次数'),
);
$chengItem=array('piaomianjia','shuifei','yingshoujine','yingfupiaomianjia','yingfushuifei','yingfujine','dailishouru','fandian','jichangjianshefei','ranyoufei');

$i=0;
$fieldCount=count($arr);
$s=0;
//thead
foreach ($arr as $f){
if ($s echo iconv('utf-8','gbk',$f['cn'])."\t";
}else {
echo iconv('utf-8','gbk',$f['cn'])."\n";
}
$s++;
}
//
$db=M('Lottery_record');
$sns=$db->where(array('lid'=>intval($_GET['id']),'islottery'=>1,'dname' != null))->field('COUNT(sn) as tjs,dname as d_name')->GROUP('d_name')->order('tjs DESC')->select();
//$sns=$db->where(array('lid'=>intval($_GET['id']),'islottery'=>1))->order('tjs DESC')->select(DISTINCT(dname) AS d_name, COUNT(dname) AS tjs);
//$sns=array('select DISTINCT(dname) AS d_name, COUNT(dname) AS tjs from $db where 'lid'==intval($_GET['id']) and 'islottery'==1 GROUP BY dname ORDER BY tjs DESC');
if ($sns){
if ($sns[0]['token']!=$this->token){
exit('no permission');
}
foreach ($sns as $sn){
$j=0;
foreach ($arr as $field){
$fieldValue=$sn[$field['en']];
switch ($field['en']){
default:
break;
case 'tjs':
    $fieldValue=iconv('utf-8','gb2312',$fieldValue);
    break;
case 'd_name':
$fieldValue=iconv('utf-8','gb2312',$fieldValue);
break;
}
if ($j echo $fieldValue."\t";
}else {
echo $fieldValue."\n";
}
$j++;
}
$i++;
}
}
exit();
}


}

你这种写法应该是thinkphp吧？
据我所知好像tp不支持这样的，不过你可以写原生的sql。