Question

我正在尝试按以下格式检索数据：

Story | Story Type | Creation Date | Company Role | Tag 1 | Tag 2 | Tag 3
negative iii | Negative | 21/02/2011 | Business Analyst | Project Duration | Team Size | Process 
negative ccc | Negative | 22/02/2011 | Admin | Workspace Layout | Organisational | Process

而不是：

Story | StoryCategoryID | CreationDate | CompanyRole | Name  
negative iii | 1 | 21/02/2011 | Business Analyst | Project Duration 
negative iii | 1 | 21/02/2011 | Business Analyst | Team Size 
negative iii | 1 | 21/02/2011 | Business Analyst | Process 
negative ccc | 1 | 22/02/2011 | Admin | Workspace Layout 
negative ccc | 1 | 22/02/2011 | Admin | Organisational and Reporting Structure    
negative ccc | 1 | 22/02/2011 | Admin | Process

但是我收到了以下错误：

1）关键字AS附近的语法不正确，

2）Z

附近的语法不正确

这是我的SQL，请帮忙！

SELECT   
    Story, 
    CASE StoryCategoryID
        WHEN 1 THEN 'Negative'
        WHEN 0 THEN 'Positive' 
        ELSE CAST(StoryCategoryID as varchar(10)) as StoryCategoryID, 
     CreationDate, 
     CompanyRole, 
     MAX(CASE WHEN Z.MinName = af2.Name THEN af2.Name ELSE '' END) as Tag1 , 
     MAX(CASE WHEN Z.MinName <> af2.Name AND Z.MaxName <> af2.Name THEN af2.Name ELSE '' END) as Tag2, 
     MAX(CASE WHEN Z.MaxName = af2.Name THEN af2.Name ELSE '' END) as Tag3 
FROM ( SELECT s.Story , s.StoryCategoryID , 
              CONVERT(VARCHAR(10), s.CreationDate,  103) AS CreationDate , 
              m.CompanyRole , af.AgileFactorID , MIN(af.Name) MinName , 
              MAX(af.Name) MaxName 
        FROM Story s 
        INNER JOIN ProjectIterationMember pm 
              ON pm.ProjectIterationMemberID = s.ProjectIterationMemberID  
        INNER JOIN Iterations i     
              ON i.ProjectIterationID = pm.ProjectIterationID 
        INNER JOIN Member m  ON m.MemberID = pm.MemberID 
        INNER JOIN ProjectStoryFactors psf ON psf.StoryID = s.StoryID 
        INNER JOIN AgileFactors af ON af.AgileFactorID = psf.AgileFactorID 

        WHERE i.ProjectID = '" + proj_id + "'" 
        GROUP BY s.Story, 
                 s.StoryCategoryID, 
                 CONVERT(VARCHAR(10), s.CreationDate, 103),   
                 m.CompanyRole, af.AgileFactorID ) Z 
  INNER JOIN AgileFactors af2  ON af2.AgileFactorID = Z.AgileFactorID 
  GROUP BY Story, StoryCategoryID, CreationDate, CompanyRole

Answer 1

SQL无法读取：

SELECT Story, CASE StoryCategoryID WHEN 1 THEN 'Negative' WHEN 0 THEN 'Positive' ELSE CAST(StoryCategoryID as varchar(10)) as StoryCategoryID, CreationDate, CompanyRole, MAX(CASE WHEN Z.MinName = af2.Name THEN af2.Name ELSE '' END) as Tag1 , MAX(CASE WHEN Z.MinName <> af2.Name AND Z.MaxName <> af2.Name THEN af2.Name ELSE '' END) as Tag2, MAX(CASE WHEN Z.MaxName = af2.Name THEN af2.Name ELSE '' END) as Tag3 FROM ( SELECT s.Story , s.StoryCategoryID , CONVERT(VARCHAR(10), s.CreationDate, 103) AS CreationDate , m.CompanyRole , af.AgileFactorID , MIN(af.Name) MinName , MAX(af.Name) MaxName FROM Story s INNER JOIN ProjectIterationMember pm ON pm.ProjectIterationMemberID = s.ProjectIterationMemberID INNER JOIN Iterations i ON i.ProjectIterationID = pm.ProjectIterationID INNER JOIN Member m ON m.MemberID = pm.MemberID INNER JOIN ProjectStoryFactors psf ON psf.StoryID = s.StoryID INNER JOIN AgileFactors af ON af.AgileFactorID = psf.AgileFactorID WHERE i.ProjectID = '" + proj_id + "'" GROUP BY s.Story, s.StoryCategoryID, CONVERT(VARCHAR(10), s.CreationDate, 103), m.CompanyRole, af.AgileFactorID ) Z INNER JOIN AgileFactors af2 ON af2.AgileFactorID = Z.AgileFactorID GROUP BY Story, StoryCategoryID, CreationDate, CompanyRole;

至少组织它以便结构关键字可见：

SELECT Story, 
       CASE StoryCategoryID WHEN 1 THEN 'Negative' WHEN 0 THEN 'Positive' 
       ELSE CAST(StoryCategoryID as varchar(10)) as StoryCategoryID, 
       CreationDate, 
       CompanyRole, 
       MAX(CASE WHEN Z.MinName = af2.Name THEN af2.Name ELSE '' END) as Tag1, 
       MAX(CASE WHEN Z.MinName <> af2.Name AND Z.MaxName <> af2.Name
           THEN af2.Name ELSE '' END) as Tag2, 
       MAX(CASE WHEN Z.MaxName = af2.Name THEN af2.Name ELSE '' END) as Tag3 
  FROM (SELECT s.Story, s.StoryCategoryID,
               CONVERT(VARCHAR(10), s.CreationDate, 103) AS CreationDate, 
               m.CompanyRole, af.AgileFactorID, MIN(af.Name) MinName, 
               MAX(af.Name) MaxName
          FROM Story s 
          JOIN ProjectIterationMember pm
            ON pm.ProjectIterationMemberID = s.ProjectIterationMemberID
          JOIN Iterations i ON i.ProjectIterationID = pm.ProjectIterationID
          JOIN Member m     ON m.MemberID = pm.MemberID
          JOIN ProjectStoryFactors psf  ON psf.StoryID = s.StoryID
          JOIN AgileFactors af ON af.AgileFactorID = psf.AgileFactorID
         WHERE i.ProjectID = '" + proj_id + "'" 
         GROUP BY s.Story, s.StoryCategoryID,
               CONVERT(VARCHAR(10), s.CreationDate, 103),   
               m.CompanyRole, af.AgileFactorID) Z
  JOIN AgileFactors af2 ON af2.AgileFactorID = Z.AgileFactorID 
 GROUP BY Story, StoryCategoryID, CreationDate, CompanyRole

符号'" + proj_id + "'"表明这是从编程语言中的字符串中提取的;这是一个SQL注入的公开邀请。在纯SQL上下文中，它在语法上是无效的;你最后有一个迷路双引号。

Answer 2

@JonathanLeffler说的是什么。另外你还缺少逗号： ~~MIN（af.Name）MinName，~~

和

~~MAX（af.Name）MaxName~~ _{关闭mac并上床的时间：-o}

为什么我的查询中出现SQL语法错误？

2 个答案: