SQL多带计数

Question

我需要参加3个不同的MySQL表连接：

• 的问题表（代表questio）
• 的问题投票表格（表示喜欢的问题时，登录= 1不同于当Sign = 0时）
• 答案表（表示具有对特定问题的答案的表）。

这三个表有这样的结构：

Questions 
-------------------------------------------- 
| ID | UserID | Title | Body | Date 
-------------------------------------------- 
| 1 | 32 | Is it raining? | BodyQuestion | 01/01/2016 
| 2 | 45 | Who are we? | BodyQuestion | 02/02/2016 
-------------------------------------------- 


QuestionsVotes 
-------------------------------------------- 
| ID | QuestionID | Sign 
-------------------------------------------- 
| 1 | 1   | 1 
| 2 | 2   | 1 
| 3 | 1   | 0 
| 4 | 1   | 1 
| 5 | 2   | 0 

Answers 
-------------------------------------------- 
| ID | QuestionID | UserID | Body 
-------------------------------------------- 
| 1 | 1 | 45 | Yes, it is. 
| 2 | 2 | 10 | Tricky question... 
| 3 | 1 | 67 | In Barcelona it is not 

我需要的是返回一个SQL查询，给出问题的ID，以尽可能多的行返回的答案的问题已收到数每一个都与Questions.ID，Questions.UserID，Questions.Title，Questions.Body，Questions.Date，与问题相关的喜欢，与问题相关的unlikes，Answers.ID，Answers.UserID。如您所见，行之间的唯一更改是Answers字段。

SQL Output (for Question with ID=1) 
-------------------------------------------- 
| ID | UserID | Title | Body | Date | Likes | Unlikes | AnswerID | AnswerUserID 
-------------------------------------------- 
| 1 | 32 | Is it raining? | BodyQuestion | 01/01/2016 | 2 | 1 | 1 | 45 
| 1 | 32 | Is it raining? | BodyQuestion | 01/01/2016 | 2 | 1 | 3 | 67 

EDIT 1：实施例给出。

Answer 1

尝试这种情况：

SELECT `ID` , `UserID` , `Title`, `Body`, `Date`, `Likes`, `Unlikes`, `AnswerID`, `AnswerUserID` 
FROM QUESTIONS q 
INNER JOIN ANSWERS a ON q.`ID` = a.`QuestionID` 
INNER JOIN QuestionVotes v ON q.`ID` = v.`QuestionID`