从具有特定值的行中减去

问题描述

我在物化视图中从 10 个不同的表中创建了一个表。

部分看起来像这样

group_name	value1	value2
group1	100	20
group2	200	40
未知	300	60
总计	600	120

我必须将值 group_name = 'unkNown' 的行中的所有值重新排列到其他行。决赛桌应该是这样的

group_name	value1	value2
group1	200	40
group2	400	80
总计	600	120

“group1”的公式是：

 unkNown x group1 x (TOTAL-unkNown) + group1

该表是用大量代码创建的，请注意 - 我没有写它，它是给我的，我必须使用它。我不喜欢它的样子，所以请不要生气。无论如何，查询看起来像这样：

TABLESPACE pg_default
AS
 WITH table_value1 AS (
         SELECT 
            table1.group_name,table1.value1,FROM table1
        ),table_value2 AS (
         SELECT 
            table2.group_name,table2.value2,FROM table2
        ),TOTAL_groups AS (
         SELECT 
            'value1'::text AS group_name,sum(xy_table."value1")::numeric as results
           FROM xy_table
        UNION ALL
         SELECT 
            'value2'::text AS group_name,sum(xy_table."value2")::numeric as results
           FROM xy_table
        UNION ALL
         SELECT 
            'unkNown'::text AS group_name,sum(xy_table."unkNown")::numeric as results
           FROM xy_table
        ),TOTAL AS (
         SELECT 
            TOTAL_groups.group_name,TOTAL_groups.results
            FROM TOTAL_groups
        UNION ALL           
            'TOTAL'::text AS group_name,round(sum(TOTAL_groups.raba),1) as results
           FROM skupaj_energenti
        )
 SELECT 
    a.group_name,COALESCE(a.results,0::numeric) AS value1,0::numeric) AS value2
  FROM table_value1 a
     LEFT JOIN table_value2 b ON b.group_name = a.group_name
     LEFT JOIN TOTAL c ON f.group_name = a.group_name
WITH DATA;

我不知道我应该如何在 sql 中编写这样的条件。请帮忙。

解决方法

将“未知”行分配给其他行。假设 value1,value2 是 DECIMAL

select group_name,value1 * (1 + k1) value1,value2 * (1 + k2) value2
from tbl
cross join (
    select sum(case group_name when 'unknown' then value1 end) / sum(case group_name when 'TOTAL' then value1 else -value1 end)  k1,sum(case group_name when 'unknown' then value2 end) / sum(case group_name when 'TOTAL' then value2 else -value2 end)  k2
    from tbl
    where group_name in ('TOTAL','unknown')
    ) t
where tbl.group_name not in ('TOTAL','unknown')

db<>fiddle