Question

I have a question on Date difference in (My)Sql with c#.
In my database, I have a table containing date ranges like the following:

------------------------
From date      to date
-------------------------
2012-07-01    2012-07-03
2012-07-05    2012-07-07
2012-07-10    2012-07-12
2012-07-13    2012-07-16
--------------------------

From those ranges, i want to calculate all included dates as result, i.e.:

2012-07-01 
2012-07-02 
2012-07-03 
2012-07-05 
2012-07-06 
2012-07-07 
2012-07-10 
2012-07-11 
2012-07-12 
2012-07-13 
2012-07-14 
2012-07-15
2012-07-16

SELECT DATEDIFF('2012-01-01', '2012-02-02') does not work as I expect,
it gives only total number of days… i want all the dates between this, including the dates of the range (FromDate and ToDate).

Can you show me how I can implement this (in SQL or C#) ?

Answer 1

Thanks all I fixed it in C#.. cant find anything in mysql.

dtDetails is a datatable with values from DB (fromdate and to date)

Then i created one more datatable and stored all the values from (fromdate — todate)

then i will use that datatable.

if (dtDetails.Rows.Count > 0)

{
foreach (DataRow dr in dtDetails.Rows)
{
DateTime startingDate = Convert.ToDateTime( dr["fromdate"]);
DateTime endingDate = Convert.ToDateTime(dr["todate"]);
DateTime newdate;
for (newdate = startingDate; newdate <= endingDate; newdate = newdate.AddDays(1))
{
DataRow dr2 = dt2.NewRow();
dt2.Rows.Add(newdate);

}

}
}