Question

I want to get the sum of a column whose dates are same.

Date          Charges
3/8/2012       200
3/8/2012       400

4/8/2012       300
4/8/2012       100

<%stat=con.createStatement();
rs=stat.executeQuery("select * from pat.dbo.PHPL"); 
while(rs.next())
{
date=rs.getString("Date");
charges=rs.getString("Charges");%>
<table>

<tr>
<td><%=date%></td>
<td><%=charges%></td>
<%}%>
</tr></table>

Want this result:

Date          Charges
3/8/2012       600
4/8/2012       400

I want this with jsp not in sql query. As I set datatype of charges as String in database. So sum was not be possible in query.
Thanks.

Answer 1

You don’t give any information about dbms you are using but, by your original query, I assume you are using sqlserver from Microsoft.

So, you can write:

select date, sum(cast(charges as float)) from pat.dbo.PHPL group by date.
See this link:

http://msdn.microsoft.com/en-us/library/aa226054%28v=sql.80%29