我如何最好地实现这个庞大的查询？

Question

所以我有像

这样的表格

--                  Partners 
-- ============================================================
--   id  | name                  | email
-- ============================================================
--    1  | 'Haliburton'          | 'DCheney@Haliburton.org'
--    2  | 'Berkshire Hathaway'  | 'WarrenBridgemaster@bershire.org'
--    3  | 'Jason'               | 'jason89@gmail.com'


--                Sections
-- =========================================
--   id  |          title              
-- =========================================
--    1  |  'Partner planning'         
--    2  |  'Partner prospecting'   
--    3  |  'Partner recruiting'          
--    4  |  'Partner activation'     
--    5  |  'Partner growth'   


--             Subsections
-- ==============================================
--   id  |       title             | section_id
-- ==============================================
--    1  | 'Target Markets'        |    1
--    2  | 'Target Customers'      |    1
--    3  | 'Competition'           |    1
--    4  | 'Partner Profile'       |    2
--    5  | 'Partner value'         |    3
--    6  | 'Partner Qualification' |    3
--    7  | 'Business Terms'        |    4
--    8  | 'Getting Traction'      |    5


--                                            Questions
-- ====================================================================================================================
--   id  |                        qtext                                                               |  subsection_id
-- ====================================================================================================================
--    1  | 'Have you defined the target markets in terms of industries, verticals and subverticals?'  |   1
--    2  | 'Have you identified the number of potential customers in each state or region?'           |   1
--    3  | 'Have you built a market coverage model estimating the number of partners in each region?' |   1
--    4  | 'Have you built the revenue model to estimate sales by partners in each region?'           |   1
--    5  | 'Have you built a market coverage model estimating the number of partners in each region?' |   2
--    .                                           .                                                       .
--    .                                           .                                                       .
--    .                                           .                                                       .
--    .                                           .                                                       .
--    .                                           .                                                       .
--    61 | 'Have you defined the customer references acquisition process?'                             |  8


--                   Answers
-- =========================================
--   id  |  question_id | partner_id | val
-- =========================================
--    1  |      1       |     1      | 24
--    2  |      2       |     1      | 50
--    3         1       |     2      | 0
--    4  |      3       |     1      | 90

其中的关联是不言自明的（Subsections 中的section_id 指的是Sections 中的id，Answers 中的partner_id 指的是Partners 中的id，等等）。

我要做的是编写一个存储过程，对于给定的Partner.id，返回合作伙伴已回答的每个问题的行，NULL 用于回答值，并为他们没有回答的任何问题返回 ID回答，连同问题的文本、anw 的 id、问题的 id、部分和小节的标题。

问题一：自从

-- =============================================================================================
--   section_title     |  subsection_title  |  question_id |            question_text           
-- =============================================================================================
--  'Partner Planning' | 'Target Markets'   |       1      | 'Have you defined the target ...?'  
--  'Partner Planning' | 'Target Markets'   |       2      | 'Have you identified the .......?' 
--  'Partner Planning' | 'Target Markets'   |       3      | 'Have you built a market .......?'  
--  'Partner Planning' | 'Target Markets'   |       4      | 'Have you built the revenue ....?'  
--  'Partner Planning' | 'Target Customers' |       5      | 'Have you defined the ideal ....?' 
--          .                   .                   .                         .                 
--          .                   .                   .                         .                  
--          .                   .                   .                         .                 
--          .                   .                   .                         .                
--  'Partner Growth'   | 'Getting Traction' |       61      | 'Have you defined the ideal ....?'

每次调用 sproc 时，sproc 返回的表的一部分都是相同的，我是否应该创建一个单独的 sproc 来返回该表？为什么或为什么不？

编辑： 问题 2：以下对于整个查询是否正确？

BEGIN
    SELECT Sections.title AS section_title,
           Subsections.title AS subsection_title,
           Questions.id AS question_id,
           Questions.qtext AS question_text,
           Answers.id AS answer_id,
           Answers.val AS answer_val
    FROM 
    Answers RIGHT OUTER JOIN ( 
        SELECT *
        FROM Questions INNER JOIN (
            SELECT *
            FROM Subsections INNER JOIN Sections
            ON Subsections.section_id = Sections.id
        )
        ON Questions.id = Answers.question_id
    )                              
    ON  Question.id = Answers.question_id
    WHERE Answers.partner_id = @pid
END

???

如您所知，我是数据库编程的 n00b。

Answer 1

按照这些思路应该可以解决问题，从列出所有合作伙伴的列表开始。在始终满足的条件下对问题进行 INNER JOIN 将返回每个合作伙伴的每个问题。然后，您可以根据合作伙伴 ID LEFT JOIN 到 Answers 并添加子句以过滤特定的 question_id

    SELECT Sections.title AS section_title,
       Subsections.title AS subsection_title,
       Questions.id AS question_id,
       Questions.qtext AS question_text,
       Answers.id AS answer_id,
       Answers.val AS answer_val 
    FROM Partner
    INNER JOIN Questions on 1 = 1
    INNER JOIN Subsections on Subsections.Id = Questions.subsection_id
    INNER JOIN Sections on Sections.Id = Subsections.section_id
    LEFT JOIN Answers on Answers.partner_id = Partner.Id
            AND Answers.questions_id = Questions.Id
    WHERE Partner.Id = @pid

您发布的初始查询可以使用，但这看起来更简洁。