ThinkPHP连贯查询之子查询

$subQuery1 = D('device_factory df')->join('inner join device d on d.factory=df.factory')
        ->field("df.name as '机型品牌',d.factory,model,type,case when d.name='' then d.orgin else d.name end as name")
        ->select(false);

select df.name as '机型品牌',d.factory,model,type,case when d.name='' then d.orgin else d.name end as name from device_factory df inner join device d on d.factory=df.factory

第二个子查询

$subQuery1 = D('device_factory df')->join('inner join device d on d.factory=df.factory')
        ->field("df.name as '机型品牌',d.factory,model,type,case when d.name='' then d.orgin else d.name end as name")
        ->select(false);
        
$c = D()->table("record r,($subQuery1)b")
            ->field('count(*) as times,b.*')->where(
            'r.device&0xffff=b.model and r.device>>16&0xffff=b.factory'
                    )->group('device&0xffff')->select(false);

select count(*) as times, b.* from record r ,(select df.name as '机型品牌',d.factory,model,type,case when d.name='' then d.orgin else d.name end as name from device_factory df inner join device d on 
d.factory=df.factory)b where r.device&0xffff=b.model and r.device>>16&0xffff = b.factory group by device&0xffff

总查询

$subQuery1 = D('device_factory df')->join('inner join device d on d.factory=df.factory')
        ->field("df.name as '机型品牌',d.factory,model,type,case when d.name='' then d.orgin else d.name end as name")
        ->select(false);
        
$c = D()->table("record r,($subQuery1)b")
    ->field('count(*) as times,b.*')->where(
    'r.device&0xffff=b.model and r.device>>16&0xffff=b.factory'
    )->group('device&0xffff')->select(false);
        
$d = D()->table("(select @rank:=0)rank,($c)c")
    ->field('@rank:=@rank+1 as rank,c.*')
    ->order('c.times desc')->select();

SELECT @rank:=@rank+1 as rank,c.* FROM
(select @rank:=0)rank,(
SELECT count(*) as times,
b.* FROM record r,
(SELECT df.name as '机型品牌',d.factory,`model`,`type`,case when d.name='' then d.orgin 
else d.name end as name FROM device_factory df inner join device d on d.factory=df.factory  )b 
WHERE ( r.device&0xffff=b.model and r.device>>16&0xffff=b.factory ) GROUP BY device&0xffff )c ORDER BY c.times desc