存储过程返回重复记录

Question

我有以下表7表：

1）标题

ID Title              Author   
------------------------------------------------------------------------- 
1  The Hidden Language of Computer Hardware and Software Charles Petzold 
2  Paths, Dangers, Strategies        Nick Bostrom 
3  The Smart Girl's Guide to Privacy      Violet Blue 
4  Introduction to Algorithms        Thomas H. Cormen 
5  Machine Learning in Action        Peter Harrington 
... 

2）主题

ID   Name 
------------------------------------------ 
1   Science Fiction 
2   Biography 
3   Painting 
... 

3）的主题

ID   Name 
----------------------------------- 
1   Science 
2   Technology 
3   Music 
4   Geography 
... 

4）牌号

ID   Name 
------------------------------------ 
1    Grade 1 
2    Grade 2 
3    Grade 3 
4    Grade 4 
5    Grade 5 
... 

5）TitleThemeAssociation

TitleID   ThemeID 
------------------------------------------ 
1    1 
1    3 
4    2 
4    3 
... 

6）TitleSubjectAssociaton

TitleID   SubjectID 
--------------------------------- 
1    1 
1    3 
2    1 
2    3 
4    1 
4    2 
... 

7）TitleGradeAssociaton

TitleID    GradeID 
1     1 
1     2 
1     3 
2     1 
2     2 
... 

我有一个存储procudure如下：

CREATE PROCEDURE [dbo].[GetTitlesPageWise] 
     @PageIndex INT = 1 
     ,@PageSize INT = 10 
     ,@searchText NVARCHAR(250) = '' 
     ,@PageCount INT OUTPUT 
AS 
BEGIN 
     SET NOCOUNT ON; 
     SET FMTONLY OFF; 

select ROW_NUMBER() over 
     (
     ORDER BY [id] ASC 
     ) as RowNumber, 
     T.Id As [Title ID], 
     T.Title, 
     H.Theme, 
     S.Subject, 
     G.Grade 
into #Results 
From Titles T 
Outer Apply 
(
    Select Stuff((Select ', ' + Name 
        From Themes     H 
        Join TitleThemeAssociaton TH On H.Id = TH.ThemeId 
        Where TH.TitleId = T.Id 
        For Xml Path('')), 1, 2, '') As Theme 
    From Themes 
) H 
Outer Apply 
(
    Select Stuff((Select ', ' + Name 
        From Subjects    S 
        Join TitleSubjectAssociation TS On S.Id = TS.SubjectId 
        Where TS.TitleId = T.Id 
        For Xml Path('')), 1, 2, '') As Subject 
    From Subjects 
) S 
Outer Apply 
(
    Select Stuff((Select ', ' + Name 
        From Grades     G 
        Join TitleGradeAssociation TG On G.Id = TG.GradeId 
        Where TG.TitleId = T.Id 
        For Xml Path('')), 1, 2, '') As Grade 
    From Grades 
) G 
WHERE 
    t.title Like @searchText + '%' 
    AND 
    (
     H.Theme Is Null 
     Or  S.Subject Is Null 
     Or  G.Grade Is Null 
    ) 

     DECLARE @RecordCount INT 
     SELECT @RecordCount = COUNT(*) FROM #Results 

     SET @PageCount = CEILING(CAST(@RecordCount AS DECIMAL(10, 2))/CAST(@PageSize AS DECIMAL(10, 2))) 
     PRINT  @PageCount 

     SELECT * FROM #Results 
     WHERE RowNumber BETWEEN(@PageIndex -1) * @PageSize + 1 AND(((@PageIndex -1) * @PageSize + 1) + @PageSize) - 1 

     DROP TABLE #Results 
END 

我想要不同的标题ID和输出如下所示，但查询给出了重复的结果。如果“主题”，“主题”和“成绩”分配了所有值，则记录应排除在结果之外。在上述情况下标题ID 1应被排除，因为所有三个值都存在那里。我需要帮助解决这个问题。

RowNumber Title ID   Title   Theme  Subject  Grade 
1   2 Paths, Dangers, Strategies  NULL  Science , Music Grade 1, Grade 2 
2   3 The Smart Girl's Guide to Privacy NULL NULL  NULL 
3   4 Introduction to Algorithms Biography, Painting Science , Technology NULL 
4   5 Machine Learning in Action NULL NULL NULL 

............. 

Answer 1

SQL DEMO

SELECT 
     ROW_NUMBER() OVER (ORDER BY [ID]) rn, 
     [ID], 
     [Title], 
     Subject = STUFF ((
         SELECT ',' + S.[Name] 
         FROM TitleSubjectAssociation TS 
         JOIN Subjects S 
         ON TS.SubjectId = S.Id 
         WHERE TS.[TitleID] = T.[ID] 
         FOR XML PATH(''), TYPE).value('.', 'NVARCHAR(MAX)'), 1, 1, '' 
        ), 
     Theme = STUFF ((
         SELECT ',' + TH.[Name] 
         FROM TitleThemeAssociation TA 
         JOIN Themes TH 
         ON TA.[ThemeID] = TH.[ID] 
         WHERE TA.[TitleID] = T.[ID] 
         FOR XML PATH(''), TYPE).value('.', 'NVARCHAR(MAX)'), 1, 1, '' 
        ), 
     Grade = STUFF ((
         SELECT ',' + G.[Name] 
         FROM TitleGradeAssociation TG 
         JOIN Grades G 
         ON TG.[GradeID] = G.[ID] 
         WHERE TG.[TitleID] = T.[ID] 
         FOR XML PATH(''), TYPE).value('.', 'NVARCHAR(MAX)'), 1, 1, '' 
        )           
FROM Titles T; 

如果你需要一个过滤器，你可以尝试检查许多,如何在结果中。两个,意味着三个要素。

WHERE len(Subject) - len(replace(Subject,',','')) != 2 
    AND len(Theme) - len(replace(Theme,',','')) != 2 
    AND len(Grade) - len(replace(Grade,',','')) != 2 

输出