Question

下面是在结果列中包含三列的表，我将权重与过去7天相乘以显示结果，还有另一个如果赠款总额与我编写的某些代码的总匹配匹配，我现在只希望显示该表旁边的类别中的一个类别，该代码现在可以倍增并将总和计入一列，但我想知道可以更改此代码以进行比较以及类别。

Example

在您看到的图片框中，存在三个类别，其中级别列为解释名称。

我想要的是，您在左侧框中看到的总计是56.5，现在它与右侧框中的> 42.5 值匹配，我希望我的sql代码能给我低于结果。

Score      Category        Interpretation
56.5       >42.5             High

我确实尝试过下面的代码，但我想对其进行一些修改，我认为，目前，在图片右框中，如果没有创建表格，就可以实现上述结果，那么我没有针对这三个类别的另一个特定表格对于类别，最好还是与我一起创建另一个表并加入，请向我展示

select (SUM (FCS_CEREALS_AND_TUBERS * 2) + SUM (FCS_PULSES * 3) +
        SUM (FCS_VEGETABLES * 1) + SUM (FCS_FRUIT * 1)  +
        SUM (FCS_MEAT_AND_FISH * 4) + SUM (FCS_MILK * 4) +
        SUM (FCS_SUGAR * 0.5) + SUM (FCS_OIL * 0.5)) AS RESULT
from TBL_FCS

Answer 1

好像您已经处理了数据。如果原始表中的数据未透视，则在该表上工作。这是您当前结构的解决方案：

with 
  weights(id, food_group, weight) as (
    select 1, 'CEREALS AND TUBERS', 2 from dual union all
    select 2, 'PULSES',             3 from dual union all
    select 3, 'VEGETABLES',         1 from dual union all
    select 4, 'FRUIT',              1 from dual union all
    select 5, 'MEAT AND FISH',      4 from dual union all
    select 6, 'MILK',               4 from dual union all
    select 7, 'SUGAR',             .5 from dual union all 
    select 8, 'OIL',               .5 from dual ) 
select food_group, past_7_days, weight, result, 
       case when id is null and result <= 28 then 'Low'
            when id is null and result between 28.5 and 42 then 'Normal'
            when id is null and result >= 42.5 then 'High'
       end as interpretation
  from (
    select food_group, past_7_days, weight, sum(past_7_days * weight) result, id
      from (
        select *
          from tbl_fcs
          unpivot (past_7_days for food_group in (
            fcs_cereals_and_tubers as 'CEREALS AND TUBERS', 
            fcs_pulses             as 'PULSES', 
            fcs_vegetables         as 'VEGETABLES', 
            fcs_fruit              as 'FRUIT', 
            fcs_meat_and_fish      as 'MEAT AND FISH', 
            fcs_milk               as 'MILK', 
            fcs_sugar              as 'SUGAR', 
            fcs_oil                as 'OIL')))
      join weights using (food_group)
      group by rollup((food_group, past_7_days, weight, id)))
   order by id

^demo

您必须取消每个食物组的值，然后与它们的权重相乘并相乘。使用case when添加按汇总汇总和条件解释。

SQL计算多个列并将其结果与类别进行比较

1 个答案: