SQL script to with the shown screenshot - sql

Question

I want to write a sql script to as shown in the screenshot image. Thank you.
enter image description here
I've tried MAX() function to aggregate the ESSBASE_MONTH field to make it distinct and display a single month in the output instead of multiple months. I am yet to figure out how to put 0 in any month that EMPID did not perform any sale like in December under "Total GreaterThan 24 HE Account" and "Total_HE_Accounts"

Answer 1

The fields of the table are not very informative however based on screenshot, this is the best answer I could come up with.
Assuming the table name is SALES;
select
ADJ_EMPID,
ESSBASE_MONTH,
MAX(YTD_COUNT) AS YTD_COUNT,
SUM(TOTAL_24) AS TOTAL_24,
SUM(TOTAL_ACC) AS TOTAL_ACC
from SALES
group by
ADJ_EMPID,
ESSBASE_MONTH
The above will aggregate the monthly 'sales' data as expected.
To add the 'missing' rows such as the December, it is possible to do it by doing a union of the above query with a vitural table.
select
MAX(MONTH_NUMBER) AS MONTH_NUMBER,
ADJ_EMPID,
ESSBASE_MONTH,
MAX(YTD_COUNT) AS YTD_COUNT,
SUM(TOTAL_24) AS TOTAL_24,
SUM(TOTAL_ACC) AS TOTAL_ACC
from (
select
1 as MONTH_NUMBER,
*
from SALES
union all
select * from (values
(1, '300014366', 'January', 0, 0, 0),
(2, '300014366', 'Feburary', 0, 0, 0),
-- add the other missing months as required
(11, '300014366', 'November', 0, 0, 0),
(12, '300014366', 'December', 0, 0, 0)
) TEMP_TABLE (MONTH_NUMBER, ADJ_EMPID, ESSBASE_MONTH, YTD_COUNT, TOTAL_24, TOTAL_ACC)
) as AGGREGATED_DATA
group by
ADJ_EMPID,
ESSBASE_MONTH
order by MONTH_NUMBER;
TEMP_TABLE is a vitural tables which contains all the months and sales as zero. There is a special field MONTH_NUMBER added to sort the months in the proper order.
Not the easiest query to understand, the requirement is not exactly feasible either..
Link to fiddledb for a working solution with PostgreSQL 15.