Question

I have been working on an SQL Statement in which I can select a start date and end date and add all the dates in between into the table. This start and end date is accompanied by an id. Like for example I select 1/1/2012 and 4/1/2012 and the id is 1
the result should be as follow

reqId   reqDate
1       1/1/2012
1       2/1/2012
1       3/1/2012
1       4/1/2012

My sql statement is as follow

"Insert into Request(reqId, reqDate) " & _
"Select @request, reqDate From Request where reqDate between @start and @end "

It just does nothing so I am not sure if I am on the right track.

Answer 1

Not knowing what database system you’re using, here’s one for SQL Server (2008 or later):

declare @Start date
declare @end date
declare @request int

set @Start = '20120101'
set @end = '20120104'
set @request = 1

;with Dates as (
    select @request as reqId,@Start as reqDate
    union all
    select reqId+1,DATEADD(day,1,reqDate) from Dates
    where reqDate < @end
)
select * from Dates

Result:

reqId       reqDate
----------- ----------
1           2012-01-01
2           2012-01-02
3           2012-01-03
4           2012-01-04

(I originally said for 2005 or later, then realised I’m using date. For 2005, replace date with datetime)