SQL Server 2008 - Query to get result in fraction format

Question

I have a table which contains data like this:

MinFormat(int)  MaxFormat(int)  Precision(nvarchar)
   -2              3             1/2

The

Answer 1

Sorry, now I'm late, but this was my approach:

I'd wrap this in a TVF actually and call it like

SELECT * FROM dbo.FractalStepper(-2,1,'1/4');

or join it with your actual table like

SELECT *
FROM SomeTable
CROSS APPLY dbo.MyFractalSteller(MinFormat,MaxFormat,[Precision]) AS Steps

But anyway, this was the code:

DECLARE @tbl TABLE (ID INT, MinFormat INT,MaxFormat INT,Precision NVARCHAR(100));

--Inserting two examples
INSERT INTO @tbl VALUES(1,-2,3,'1/2')
                      ,(2,-4,-1,'1/4');

--Test with example 1, just set it to 2 if you want to try the other example
DECLARE @ID INT=1;

--If you want to get your steps numbered, just de-comment the tree occurencies of "Step"
WITH RecursiveCTE as
(
    SELECT  CAST(tbl.MinFormat AS FLOAT) AS RunningValue
           ,CAST(tbl.MaxFormat AS FLOAT) AS MaxF
           ,1/CAST(SUBSTRING(LTRIM(RTRIM(tbl.Precision)),3,10) AS FLOAT) AS Prec
           --,1 AS Step
    FROM @tbl AS tbl
    WHERE tbl.ID=@ID

    UNION ALL

    SELECT RunningValue + Prec
          ,MaxF 
          ,Prec
          --,Step + 1
    FROM RecursiveCTE
    WHERE RunningValue + Prec <= MaxF
)
SELECT RunningValue --,Step 
      ,CASE WHEN CAST(RunningValue AS INT)<>RunningValue 
            THEN CAST(RunningValue / Prec AS VARCHAR(10)) + '/' + CAST(CAST(1/Prec AS INT) AS VARCHAR(MAX))
            ELSE CAST(RunningValue AS VARCHAR(10))
       END AS RunningValueFractal
FROM RecursiveCTE;

The result

Value   ValueFractal
-2      -2
-1,5    -3/2
-1      -1
-0,5    -1/2
0        0
0,5      1/2
1        1
1,5      3/2
2        2
2,5      5/2
3        3