Question

how can i select a range of columns in a database(Sqlserver eg..)
i have name,id,and a dynamically created columns named after dates..

do if i query from 1-1-2011 to 16-1-2011 ..the query should return all the dates between that range…
excluding Sundays…

i am using access db with c#

so…i try is to select the columns from start date till we reach end date..
but how can it be done..(this removes Sundays too..:) )

also cant columns be selected using a index or something…like in arrays??

eg.schema is like this,,,,,column names are (id,name,’1-1-2011′,’2-1-2011′,’4-1-2011′,’6-1-2011′,’6-1-2011′)..how do i display all rows from 2-1-2011 to 6-1-2011?

Answer 1

Try this

StringBuilder query = new StringBuilder("Select ID,Name ")
    DateTime begindate=DateTime.Parse("2-1-2011");
    DateTime enddate=DateTime.Parse("6-1-2011");
    DateTime tempDate = begindate;
    while(tempDate<=enddate )
    {
        if(tempDate.DayOfWeek!=DayOfWeek.Sunday)
        {
            if (tempDate==begindate )
            {
                query.Append(",");
            }
            query.Append(","+tempDate.ToString("dd-MM-yyyy"));
        }
        tempDate = tempDate.AddDays(1);
    }
    query.Append(" From table Name");

then execute the generated select statement.