MySQL左联接2个表按计数排序

我有2个表如下，并希望有选择他们两个结果计数（列），但不工作，请通知

review table

ID | RID | Name | comment
555|3000 | John | John comment
555|3001 | Ben  | Ben comment
555|3002 | Smith| Smith comment

Likes table

U | PID
1 | 3000
2 | 3000
3 | 3000
4 | 3001


Expected result

ID | RID | Name | comment      | votes
555|3000 | John | John comment | 3
555|3001 | Ben  | Ben comment  | 1

SELECT ID, RID, Name, `Comment`, COUNT(RID) as votes 
FROM review AS there
LEFT JOIN Likes b ON there.RID = b.PID
WHERE ID = 555
AND there.RID = b.PID 
GROUP BY b.PID 
HAVING votes > 0
ORDER BY votes DESC

我期待着来自select*from review和Likes表中的count PID列的结果

我现在的问题是

SELECT * , (SELECT COUNT( PID ) FROM Likes AS votes WHERE there.ID = PID)
FROM review AS there
LEFT JOIN Likes b ON there.RID = b.PID
WHERE ID =555
AND there.RID = b.PID AND votes>0
ORDER BY votes DESC

但它没有起作用，请告知

review table

ID | RID | Name | comment
555|3000 | John | John comment
555|3001 | Ben  | Ben comment
555|3002 | Smith| Smith comment

Likes table

U | PID
1 | 3000
2 | 3000
3 | 3000
4 | 3001


Expected result

ID | RID | Name | comment      | votes
555|3000 | John | John comment | 3
555|3001 | Ben  | Ben comment  | 1

SELECT ID, RID, Name, `Comment`, COUNT(RID) as votes 
FROM review AS there
LEFT JOIN Likes b ON there.RID = b.PID
WHERE ID = 555
AND there.RID = b.PID 
GROUP BY b.PID 
HAVING votes > 0
ORDER BY votes DESC

---

由于您只关注有投票权的评论，您可以通过将

左连接

转换为

内部连接

，并消除对

计数的检测，从而缩短查询时间（可能更快）：

输出：

|  ID |  RID | NAME |      COMMENT | VOTES |
--------------------------------------------
| 555 | 3000 | John | John comment |     3 |
| 555 | 3001 |  Ben |  Ben comment |     1 |

“需要分组依据”和“投票”应为嵌套查询结果的名称