1年每月總結與份額百分比

Question

我想爲我的應用程序提前報告。現在我遇到了一些疑問。

下面是詳細信息：

table_product

id | name 
-----+--------- 
1 | Book 
2 | Pen 
3 | Ruler 
4 | Calendar 
5 | Scissors 

table_event

id | name 
-----+--------- 
1 | Launching 
2 | Sale 
3 | Roadshow 
4 | Presentation 
5 | Normal 

table_transaction

---+------------+-------+-----------+---------+-----------+---------+-----------+---------+----------+ 
id | date  | event | product_1 | share_1 | product_2 | share_2 | product_3 | share_3 | amount | 
---+------------+-------+-----------+---------+-----------+---------+-----------+---------+----------+ 
1 | 2013-01-12 | 1 | 3  | 50 |  2  | 50 |   |   | 5000 | 
2 | 2013-02-13 | 3 | 2  | 50 |  1  | 25 |  4  | 25 | 10000 | 
3 | 2013-01-13 | 5 | 5  | 50 |  4  | 50 |   |   | 7000 | 
4 | 2013-04-13 | 2 | 1  | 100 |   |   |   |   | 5000 | 
---+------------+-------+-----------+---------+-----------+---------+-----------+---------+----------+ 

我想顯示是這樣

--------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ 
Product Name | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | 
--------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ 
Book   |  | 2500 |  | 5000 |  |  |  |  |  |  |  |  | 
Pen   | 2500 | 5000 |  |  |  |  |  |  |  |  |  |  | 
Ruler  | 2500 |  |  |  |  |  |  |  |  |  |  |  | 
Calendar  | 3500 | 2500 |  |  |  |  |  |  |  |  |  |  | 
Scissors  | 3500 |  |  |  |  |  |  |  |  |  |  |  | 
--------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ 

我曾嘗試： 我成功生成了事件名稱的輸出與下面的查詢

SELECT t1.name as sort_name, 
    sum(IF(YEAR(t2.date) = 2013 AND MONTH(t2.date) = 1, t2.amount, 0)) as total_jan, 
    sum(IF(YEAR(t2.date) = 2013 AND MONTH(t2.date) = 2, t2.amount, 0)) as total_feb, 
    sum(IF(YEAR(t2.date) = 2013 AND MONTH(t2.date) = 3, t2.amount, 0)) as total_mar, 
    sum(IF(YEAR(t2.date) = 2013 AND MONTH(t2.date) = 4, t2.amount, 0)) as total_apr, 
    sum(IF(YEAR(t2.date) = 2013 AND MONTH(t2.date) = 5, t2.amount, 0)) as total_may, 
    sum(IF(YEAR(t2.date) = 2013 AND MONTH(t2.date) = 6, t2.amount, 0)) as total_jun, 
    sum(IF(YEAR(t2.date) = 2013 AND MONTH(t2.date) = 7, t2.amount, 0)) as total_jul, 
    sum(IF(YEAR(t2.date) = 2013 AND MONTH(t2.date) = 8, t2.amount, 0)) as total_aug, 
    sum(IF(YEAR(t2.date) = 2013 AND MONTH(t2.date) = 9, t2.amount, 0)) as total_sep, 
    sum(IF(YEAR(t2.date) = 2013 AND MONTH(t2.date) = 10, t2.amount, 0)) as total_oct, 
    sum(IF(YEAR(t2.date) = 2013 AND MONTH(t2.date) = 11, t2.amount, 0)) as total_nov, 
    sum(IF(YEAR(t2.date) = 2013 AND MONTH(t2.date) = 12, t2.amount, 0)) as total_dec, 
    sum(IF(YEAR(t2.date) = 2013, t2.amount, 0)) as event_total 
FROM events t1 
LEFT JOIN transactions t2 ON t2.event_id = t1.id 
GROUP BY sort_name 

分組但我沒有任何想法的產品做組。我試過玩union，但仍然返回一個SQL語法錯誤。

Answer 1

使用你相同的查詢，並創建table_product歸一化形式使用子查詢：

SELECT t1.name as sort_name, 
    sum(IF(YEAR(t2.date) = 2013 AND MONTH(t2.date) = 1, t2.amount, 0)) as total_jan, 
    sum(IF(YEAR(t2.date) = 2013 AND MONTH(t2.date) = 2, t2.amount, 0)) as total_feb, 
    sum(IF(YEAR(t2.date) = 2013 AND MONTH(t2.date) = 3, t2.amount, 0)) as total_mar, 
    sum(IF(YEAR(t2.date) = 2013 AND MONTH(t2.date) = 4, t2.amount, 0)) as total_apr, 
    sum(IF(YEAR(t2.date) = 2013 AND MONTH(t2.date) = 5, t2.amount, 0)) as total_may, 
    sum(IF(YEAR(t2.date) = 2013 AND MONTH(t2.date) = 6, t2.amount, 0)) as total_jun, 
    sum(IF(YEAR(t2.date) = 2013 AND MONTH(t2.date) = 7, t2.amount, 0)) as total_jul, 
    sum(IF(YEAR(t2.date) = 2013 AND MONTH(t2.date) = 8, t2.amount, 0)) as total_aug, 
    sum(IF(YEAR(t2.date) = 2013 AND MONTH(t2.date) = 9, t2.amount, 0)) as total_sep, 
    sum(IF(YEAR(t2.date) = 2013 AND MONTH(t2.date) = 10, t2.amount, 0)) as total_oct, 
    sum(IF(YEAR(t2.date) = 2013 AND MONTH(t2.date) = 11, t2.amount, 0)) as total_nov, 
    sum(IF(YEAR(t2.date) = 2013 AND MONTH(t2.date) = 12, t2.amount, 0)) as total_dec 
FROM table_product t1 
LEFT OUTER JOIN 
(
    SELECT product_1 AS product_id, 
     amount * share_1/(share_1 + COALESCE(share_2,0) + COALESCE(share_3,0)) 
      AS amount 
    FROM table_transaction 
    WHERE product_1 IS NOT NULL 
    UNION ALL 
    SELECT product_2 AS product_id, 
     amount * share_2/(share_2 + COALESCE(share_1,0) + COALESCE(share_3,0)) 
      AS amount 
    FROM table_transaction 
    WHERE product_2 IS NOT NULL 
    UNION ALL 
    SELECT product_3 AS product_id, 
     amount * share_3/(share_3 + COALESCE(share_2,0) + COALESCE(share_1,0)) 
      AS amount 
    FROM table_transaction 
    WHERE product_3 IS NOT NULL 
) t2 ON t2.product_id = t1.id 
GROUP BY sort_name 

Answer 2

你有一個產品表，而不是事件加入