need count of Range in sql query [duplicate]

Answer 1

If you need also empty ranges(i assume) try this:

;WITH Ranges
AS
(
  SELECT 0 n
  UNION ALL
  SELECT n + 1 FROM Ranges
  WHERE n < 9
)
SELECT CAST((n*10) as VARCHAR) + ' - ' + CAST((n*10 + 9) as VARCHAR) [Range], COUNT(marks) Cnt FROM Ranges
  LEFT JOIN [testTable] T
    ON marks >= (n*10) AND marks <= (n*10 + 9)
GROUP BY n*10, n*10 + 9

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