Genrate date series

Question

Hi all
I have start date and end ate
I need a date column based on this.
startdate
enddate
02/01/11
02/04/11
03/01/11
03/07/11
04/01/11
04/03/11
Like desired output will be
02/01/11
02/02/11
02/03/11
02/04/11
03/01/11
03/02/11
03/03/11
03/04/11
03/05/11
03/06/11
03/07/11
04/01/11
04/02/11
04/03/11
Please help.
Thanks

Answer 1

CREATE FUNCTION fn_dates(@from AS DATETIME, @to AS DATETIME)
  RETURNS @Dates TABLE(dt DATETIME NOT NULL PRIMARY KEY)
AS
BEGIN
  DECLARE @rc AS INT
  SET @rc = 1
  INSERT INTO @Dates VALUES(@from)
  WHILE @from + @rc * 2 - 1 <= @to
  BEGIN
    INSERT INTO @Dates
      SELECT dt + @rc FROM @Dates
    SET @rc = @rc * 2
  END
  INSERT INTO @Dates
    SELECT dt + @rc FROM @Dates
    WHERE dt + @rc <= @to
  RETURN
END
GO
CREATE TABLE #t (st DATE, en DATE)
insert  into #t
select '02/01/11', '02/04/11' union all 
select '03/01/11' ,'03/07/11' union all 
select '04/01/11', '04/03/11'
SELECT dt FROM #t cross apply (select dt from fn_dates(st, en)) as der
Best Regards,Uri Dimant SQL Server MVP,
http://sqlblog.com/blogs/uri_dimant/
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