Divided by some number into column SQL - sql

Question

Well, I have a number which stored in a column. If I want to divide the value, I just need:
select columnName / 12 from myTable
Is it possible to put the result into 12 column? I want to make the 12 is flexible. So for instance, if I divide the value by 4, so the result should be 4 column.
Value Result1 Result2 Result3 Result4
12000 3000 3000 3000 3000
Does anyone know how to achieve this?
Thank you.

Answer 1

This achievable using dynamic query.
declare #cols nvarchar(max);
declare #sql nvarchar(1000);
with cte as (
select 12000 as col1, 12000/4 as col2
union all
select col1-col2, col2 from cte where col1 > col2
)
select #cols =
STUFF((select N',' + QUOTENAME(col2) from cte
FOR XML PATH('')
), 1, 1, '') + N'';
select #cols

Answer 2

You can avoid dynamic SQL if you know a maximum count:
Start with a mockup-table to simulate your issue
DECLARE #tbl TABLE(InitialValue DECIMAL(16,4));
INSERT INTO #tbl VALUES(12000),(20000),(10000);
--To test this I use a divisor of 4, try with other numbers
DECLARE #divisor DECIMAL(16,4)=4;
--This is the query
SELECT p.*
FROM
(
SELECT t.InitialValue / #divisor As DivResult
,t.InitialValue
,CONCAT('div',FORMAT(A.Nmbr,'00')) AS ColumnName
FROM #tbl t
CROSS APPLY(SELECT TOP(CAST(#divisor AS INT)) ROW_NUMBER() OVER(ORDER BY (SELECT NULL)) FROM master..spt_values) A(Nmbr)
) t
PIVOT
(MAX(DivResult) FOR ColumnName IN(div01,div02,div03,div04,div05,div06,div07 /*add as many as you might need*/)) p;
The result
InitialValue div01 div02 div03 div04 div05 div06 div07
10000.0000 2500.000000000000000000000 2500.000000000000000000000 2500.000000000000000000000 2500.000000000000000000000 NULL NULL NULL
12000.0000 3000.000000000000000000000 3000.000000000000000000000 3000.000000000000000000000 3000.000000000000000000000 NULL NULL NULL
20000.0000 5000.000000000000000000000 5000.000000000000000000000 5000.000000000000000000000 5000.000000000000000000000 NULL NULL NULL
As you can see, the unused columns are returned but stay NULL.
I'd prefer this approach over dynamic sql as the consumer is better of in most cases if the result set and its structure is fixed and predictable...
Hint: You can add the divisor to your result set if needed...

Answer 3

It has to be dynamic query
Check below
Create TABLE Table1 (Origional int)
Declare #DivisonValue INT = 4
insert into Table1
VALUES (12000)
--Change the Top (12) to you what ever number you like. this will be your total number of columns
DECLARE #Columns VARCHAR(MAX) = (SELECT
',' + C.ColumnName + ' = Origional / ' + CAST(#DivisonValue AS VARCHAR(5))
/* Above line which you need to change for division */
FROM
(SELECT TOP (#DivisonValue)
ColumnId = ROW_NUMBER() OVER (ORDER BY s1.[object_id])
,ColumnName ='Result' + CONVERT(VARCHAR(10), ROW_NUMBER() OVER (ORDER BY s1.[object_id]))
FROM sys.all_objects AS s1 CROSS JOIN sys.all_objects AS s2
) AS C
ORDER BY
C.ColumnId
FOR XML PATH (''))
DECLARE #FullQuery VARCHAR(MAX) = 'SELECT Origional,'+ substring(#Columns,2,LEN(#Columns)-1) + ' FROM Table1'
EXEC (#FullQuery)
DROP TABLE table1
GO
Change the logic as per your need for division.