Php 解决计数查询问题
我有以下代码,我需要从personabisna表中选择所有项目,并从两个表共享personalbisnaId的另一个表中计算具有相同personalbisnaId的项目Php 解决计数查询问题,php,sql,Php,Sql,我有以下代码,我需要从personabisna表中选择所有项目,并从两个表共享personalbisnaId的另一个表中计算具有相同personalbisnaId的项目 $query="select c.BusinessLogo, c.PersonalBisnaId, c.account_id, AS Ads from personalbisna As c INNER
$query="select c.BusinessLogo,
c.PersonalBisnaId,
c.account_id,
AS Ads from personalbisna As c INNER JOIN myads AS b on b.PersonalBisnaId=c.PersonalBisnaId GROUP BY c.PersonalBisnaId LIMIT $itemfrom,$dataperpage";
这些是桌子
个性化比斯纳表
| PersonalBisnaId| account_id| BusinessLogo
---------------------------------------------
| 1 | 23 | qwertyu.jpg
| 2 | 4 | asdfghjk.jpg
| 3 | 12 | 34567gfd.jpg
| 4 | 34 | drtyujhv.jpg
myads表
| MyAdsId | PersonalBisnaId| AdType
---------------------------------------------
| 1 | 2 | logo
| 2 | 2 | business card
| 3 | 3 | logo
| 4 | 2 | caricalture
我用一些已经回答过的问题来解决我的问题,我真的很困惑,无法解决我的问题
上面的查询应该输出以下内容
| PersonalBisnaId| account_id| BusinessLogo | AdsCount
-------------------------------------------------------
| 1 | 23 | qwertyu.jpg | 0
| 2 | 4 | asdfghjk.jpg | 3
| 3 | 12 | 34567gfd.jpg | 1
| 4 | 34 | drtyujhv.jpg | 0
这就是我所拥有的
$query="SELECT
c.BusinessLogo,
c.PersonalBisnaId,
c.account_id,
c.BusinessName,
c.BusinessCategory,
c.BusinessSubCategory,
c.town,
c.estate,
c.street,
c.road,
c.building,
c.Address,
c.city,
c.PhoneNumber,
c.AltPhoneNumber,
c.website,
c.Email,
c.BusinessType
COUNT(MyAdsId) AS AdsCount
FROM personalbisna AS c
LEFT OUTER JOIN myads AS b
ON b.PersonalBisnaId= c.PersonalBisnaId
GROUP BY c.PersonalBisnaId LIMIT $itemfrom,$dataperpage";
Count
查询中缺少聚合
另外,如果要从Personabisna
表中选择所有项目,则需要左/右外部联接,而不是内部联接
SELECT c.personalbisnaid,
c.account_id,
c.BusinessLogo,
Count(AdType) AS AdsCount
FROM personalbisna AS c
LEFT OUTER JOIN myads AS b
ON b.personalbisnaid=c.personalbisnaid
GROUP BY c.personalbisnaid,
c.account_id,
c.BusinessLogo
谢谢,但我需要从我的广告中数一数table@xtech-您是否可以在问题中添加预期输出?输出应显示。1.personalBisnaId=3个广告,2.personalBisnaId=2个广告,3.personalBisnaId=8Ads@xtech-你能补充一下吗?我已经补充了预期产出。你可以说明你的期望产出是什么。通常包括什么是RDBMS是很好的。