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

其中关联是不言自明的（section_id中的Subsections引用id中的Sections，partner_id中的Answers引用{ {1}}中的{1}}等。

我尝试做的是编写一个sproc，对于给定的id，返回合作伙伴已回答的每个问题的行，Partners表示答案值和答案ID他们没有回答的任何问题，以及问题的文本，问题的id，部分和章节的标题。

问题1：自

以来

Partner.id

每次调用sproc时，sproc返回的表的部分都是相同的，我应该创建一个返回该表的单独的sproc吗？为什么或为什么不呢？

编辑： 问题2：以下内容对整个查询是否正确？

NULL

???

正如您所知，我是数据库编程的n00b。

Answer 1

这些方面的一些事情应该可以解决问题，从所有合作伙伴的列表开始。对于始终满足条件的问题的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输出到Answers，并添加一个子句来过滤特定的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，但这看起来更清晰。

我如何最好地实现这个大规模的查询？

1 个答案: