Question

我有以下表格

表农场

+---------+--------+-------------------+-----------+------------+
| FARM_ID |Stock_ID| FARM_TITLE        | Size      | FARM_VALUE |
+---------+--------+-------------------+-----------+------------+
|       2 |      1 | AgriZone          | M         |        202 |
|       3 |      1 | Cow Mill          | L         |         11 |
|       4 |      2 | Beef Farm         | H         |        540 |
|       5 |      2 | CattleOne         | M         |       1080 |
|       6 |      2 | FarmOne           | L         |        455 |
|       7 |      3 | Perdue            | H         |        333 |
|       8 |      4 | Holstein          | M         |        825 |
|      10 |      1 | Dotterers         | H         |         98 |
+---------+--------+-------------------+-----------+------------+

表门

+---------+---------+------------+
| GATE_ID | FARM_ID | FARM_VALUE |
+---------+---------+------------+
|       1 |       2 |          0 |
|       1 |       3 |          0 |
|       1 |       4 |        540 |
|       2 |       4 |        550 |
|       3 |       4 |        560 |
|       4 |       4 |        570 |
|       5 |       4 |        580 |
|       6 |       4 |        590 |
|       1 |       5 |       1080 |
|       2 |       5 |       1100 |
|       3 |       5 |       1120 |
|       4 |       5 |       1140 |
|       5 |       5 |       1160 |
|       6 |       5 |       1180 |
|       1 |       6 |        455 |
|       2 |       6 |        536 |
|       3 |       6 |        617 |
|       4 |       6 |        698 |
|       5 |       6 |        779 |
|       6 |       6 |        860 |
|       1 |       7 |          0 |
|       1 |       8 |          0 |
|       1 |      10 |          0 |
+---------+---------+------------+

表原点

+--------+----------+
| ORI_ID | ORI_NAME |
+--------+----------+
|      1 |   US     |
|      2 |   CA     |
|      3 |   MX     |
+--------+----------+

表库存

+--------+--------+-------------------+
|Stock_ID| ORI_ID | Stock_TITLE       |
+--------+--------+-------------------+
|      1 |      1 | P1                |
|      2 |      2 | P3                |
|      3 |      3 | Q4                |
|      4 |      3 | B3                |
+--------+--------+-------------------+

表结果

+-----------+---------+---------+------------+------------+
| RESULT_ID | FARM_ID | GATE_ID | FARM_VALUE |    Score%  |
+-----------+---------+---------+------------+------------+
|         1 |       7 |       1 |        333 |        100 |
|         2 |       8 |       1 |        825 |        100 |
|         3 |       6 |       1 |        455 |         40 |
|         4 |       6 |       2 |        536 |          0 |
|         5 |       6 |       3 |        617 |          0 |
|         6 |       6 |       4 |        698 |        100 |
|         7 |       6 |       5 |        779 |          0 |
|         8 |       6 |       6 |        860 |         10 |
|         9 |       4 |       1 |        540 |        100 |
|        10 |       4 |       2 |        550 |         90 |
|        11 |       4 |       3 |        560 |          0 |
|        12 |       4 |       4 |        570 |        100 |
|        13 |       4 |       5 |        580 |         10 |
|        14 |       4 |       6 |        590 |          0 |
|        15 |       5 |       1 |       1080 |          0 |
|        16 |       5 |       2 |       1100 |          0 |
|        17 |       5 |       3 |       1120 |          0 |
|        18 |       5 |       4 |       1140 |         50 |
|        19 |       5 |       5 |       1160 |          0 |
|        20 |       5 |       6 |       1180 |        100 |
|        21 |       3 |       1 |         11 |        100 |
|        22 |      10 |       1 |         98 |         90 |
|        23 |       2 |       1 |        202 |        100 |
+-----------+---------+---------+------------+------------+

带注释的结果表：与上面相同^

+-----------+---------+---------+------------+------------+
| RESULT_ID | FARM_ID | GATE_ID | FARM_VALUE |   Score%   |
+-----------+---------+---------+------------+------------+

+-----------+---------+---------+------------+------------+
|         1 |       7 |       1 |        333 |        100 | <--|H-Case {H}
+-----------+---------+---------+------------+------------+    

+-----------+---------+---------+------------+------------+     
|         2 |       8 |       1 |        825 |        100 | <--|M-Case {M}
+-----------+---------+---------+------------+------------+

+-----------+---------+---------+------------+------------+
|         3 |       6 |       1 |        455 |         40 |
|         4 |       6 |       2 |        536 |          0 |
|         5 |       6 |       3 |        617 |          0 |
|         6 |       6 |       4 |        698 |        100 |  <--|L
|         7 |       6 |       5 |        779 |          0 |     |
|         8 |       6 |       6 |        860 |         10 |     |
+-----------+---------+---------+------------+------------+     |
|         9 |       4 |       1 |        540 |        100 |     |
|        10 |       4 |       2 |        550 |         90 |     |
|        11 |       4 |       3 |        560 |          0 |     |
|        12 |       4 |       4 |        570 |        100 |  <--+M-case {H,M,L}
|        13 |       4 |       5 |        580 |         10 |     |
|        14 |       4 |       6 |        590 |          0 |     |
+-----------+---------+---------+------------+------------+     |
|        15 |       5 |       1 |       1080 |          0 |     |
|        16 |       5 |       2 |       1100 |          0 |     |
|        17 |       5 |       3 |       1120 |          0 |     |
|        18 |       5 |       4 |       1140 |         50 |  <--|H
|        19 |       5 |       5 |       1160 |          0 |
|        20 |       5 |       6 |       1180 |        100 |
+-----------+---------+---------+------------+------------+

+-----------+---------+---------+------------+------------+
|        21 |       3 |       1 |         11 |        100 | <--|L
|        22 |      10 |       1 |         98 |         90 | <--+H-case {H,M,L}
|        23 |       2 |       1 |        202 |        100 | <--|M
+-----------+---------+---------+------------+------------+

需要进行计算：

类型最多只能包含三个值：{H，M，L};
当存在所有值时，将它们分级如下：H = 70 M = 20 L = 10
所有独特的案例
案例{H，M}：H = 80 M = 20
情况{M，L}：M = 60L = 40
情况{H，L}：H = 90L = 10
案例{H}：H = 100
案例{M}：M = 100
案例{L}：L = 100
情况{H，M，L}：H = 70 M = 20 L = 10

进一步说明

仅限至少 GATE的股票，完全满意，最多可获得100分
1. 示例：Q4有3套6 GATES;只有一个GATE集必须满足（存在分数）。
2. 存在的点必须与其所属的特定情况相乘示例：Q4具有案例{H，M，L}，这意味着H = 70; M = 20; L = 10这将导致（70 * 100％）+（20 * 50％）+（10 * 100％）= 90 （回顾上面的Result表注释）
即使门没有完全满足，仍应考虑并计算积分。当没有完全满足门时，应保留获得MAX点的门。（如果不理解将提供进一步的解释）

如果我们执行查询以了解表格和数据，它将如下所示

+---------+-----------+---------------+-----------+---------+-----------+---------+
| Origin  | Stock     | Farm Title    | Farm Value|   Gate  |  Size     |  Score  |
+---------+-----------+---------------+-----------+---------+-----------+---------+
| US      | P1        | Perdue        |       333 |       1 | H         |     100 |
| US      | P3        | Holstein      |       825 |       1 | M         |     100 |
| CA      | Q4        | FarmOne       |       455 |       1 | L         |      40 |
| CA      | Q4        | FarmOne       |       536 |       2 | L         |       0 |
| CA      | Q4        | FarmOne       |       617 |       3 | L         |       0 |
| CA      | Q4        | FarmOne       |       698 |       4 | L         |     100 |
| CA      | Q4        | FarmOne       |       779 |       5 | L         |       0 |
| CA      | Q4        | FarmOne       |       860 |       6 | L         |      10 |
| CA      | Q4        | Beef Farm     |       540 |       1 | H         |       0 |
| CA      | Q4        | Beef Farm     |       550 |       2 | H         |      90 |
| CA      | Q4        | Beef Farm     |       560 |       3 | H         |       0 |
| CA      | Q4        | Beef Farm     |       570 |       4 | H         |     100 |
| CA      | Q4        | Beef Farm     |       580 |       5 | H         |      10 |
| CA      | Q4        | Beef Farm     |       590 |       6 | H         |       0 |
| CA      | Q4        | CattleOne     |      1080 |       1 | M         |       0 |
| CA      | Q4        | CattleOne     |      1100 |       2 | M         |       0 |
| CA      | Q4        | CattleOne     |      1120 |       3 | M         |       0 |
| CA      | Q4        | CattleOne     |      1140 |       4 | M         |      50 |
| CA      | Q4        | CattleOne     |      1160 |       5 | M         |     100 |
| CA      | Q4        | CattleOne     |      1180 |       6 | M         |       0 |
| MX      | B3        | Cow Mill      |        11 |       1 | L         |     100 |
| MX      | B3        | Dotterers     |        98 |       1 | H         |      90 |
| MX      | B3        | AgriZone      |       202 |       1 | M         |     100 |
+---------+-----------+---------------+-----------+---------+-----------+---------+

欲望结果

+---------+-------------------+-------+
| Origin  |  Stock            | score |
+---------+-------------------+-------+
| US      |   P1              |   100 |
| US      |   P3              |   100 |
| CA      |   Q4              |    90 |
| MX      |   B3              |    93 |
+---------+-------------------+-------+

Explanation

由于origin的{{1}}由3个不同的stock组成，而farms各有6个farms。只要将一个gates - 集（数字匹配gate）评分为某个值，我们就可以认为完全找到了整个gates。这是STOCK可以被视为100的唯一方法。

此外，并重申，stock Q4有案例：{H，M，L}并且在某种程度上发现了所有STOCK。 gate (4) 4得分（100％* H）+（50％* M）+（100％* L）等于（70 * 100％）+（20 * 50％）+（10 * 100％））= 90

因此:(取自上文）

gate

QED

所以我需要帮助是创建子查询/子选择来使这个计算工作。我在下面的SQL小提琴链接中设置了上面场景中的所有内容（以及我正在使用的正在进行的查询）。

非常感谢stackoverflow社区。

> The above problem in SqlFiddle can be found here <

Answer 1

这是我一直在研究的查询。但是，结果与您在问题中发布的结果略有不同：

select o.origin_name, s.stock_title, sum(
  case f.size
    when 'H' then
      case
        when sizes = 'H,L,M' then 70
        when sizes = 'H,M' then 80
        when sizes = 'H,L' then 90
        when sizes = 'H' then 100
        else 0
      end
    when 'M' then
      case
        when sizes = 'H,L,M' then 20
        when sizes = 'H,M' then 20
        when sizes = 'L,M' then 60
        when sizes = 'M' then 100
        else 0
      end
    else
      case
        when sizes = 'H,L,M' then 10
        when sizes = 'L,M' then 40
        when sizes = 'H,L' then 10
        when sizes = 'L' then 100
        else 0
      end
  end * r.score / 100) FinalScore
from farm f
join (
  select f.stock_id, group_concat(distinct f.size order by f.size) sizes
  from farm f
  join results r on f.farm_id = r.farm_id
  group by f.stock_id
) stockSizes on f.stock_id = stockSizes.stock_id
join results r on f.farm_id = r.farm_id
join (
  select f.stock_id, r.gate_id
  from results r
  join farm f on r.farm_id = f.farm_id
  group by f.stock_id, r.gate_id
  having sum(r.score = 0) = 0
) FullGates
on FullGates.stock_id = f.stock_id and FullGates.gate_id = r.gate_id
join stock s on s.stock_id = f.stock_id
join origin o on o.origin_id = s.origin_id
group by o.origin_id, s.stock_id

结果：

+-------------+-------------+------------+
| ORIGIN_NAME | STOCK_TITLE | FINALSCORE |
+-------------+-------------+------------+
| US          | P1          |         93 |
| CA          | P3          |         90 |
| MX          | Q4          |        100 |
| MX          | B3          |        100 |
+-------------+-------------+------------+

如果这样做，请告诉我。

Answer 2

我会使用您的原始查询来获取倒数第二个表并通过添加使用Select（找到here）更改distinct并仅选择原点，库存和计算得分了。例如，如果得分是所有这些得分的平均值，那么AVG(Score)就是Score将是您在原始查询中获取的内容。如果你只想使用具有相同Origin和Stock的项目的一小部分来计算得分，我会在选择中使用子查询，其中匹配Origin和Stick ID，所以你有：

Select Origin, 
       Stock, 
       (select calculation(Score) from tables where tables.stock_id = .... tables.origin_id = .....)
From....

希望这有帮助。

MySQL如何创建此子查询？

2 个答案: