DataSource Controls :: Returning All Rows Based On One Distinct Column?
May 18, 2010
Here is the query I have now which returns over 2 million records:
[Code]....
This works, but the result is littered with many rows that contain the same SSN. So how do I return only one row for each ssn? I cant use distinct because all of the other columns are already always different, this would return the same as above.
Using a dropdownlist, I can filter (by changing datasource) the results based on customer names in a dropdownlist. This datasource, working perfectly, looks like this:
[Code]....
Now, using a textbox and a ajax calendar, I would like to be able to filter on the date as well, but my datasource so far:
[Code]....
doesn't work very good. In some case sit doesnt show anything, in onther situations - with 10 records for a given date, it only shows one.
Question one: How do I make the last datasource work? Its probably - again-again - something with the datetime formats, but for the life of me, I can't see how to do.
Question two: The Ideal solution would be using the first datasource, SqlDataSourceAllLoads, and then be able to filter the results with filterexpressions/parameters, but again, how? The filterparameters would origin from a DropDownListKunder, matching the tblDeliveredInfo.deliveryInfo_FirmaNavn as seen in the second datasource, while the date comes from the textbox txtStartDate (databinding fired by a button).
I currently have a datasource that displays several rows on an editable gridview where the user can update several rows at once. Each row contains an ActivityTotal column per row. I'd like to sum all the ActivityTotal rows displayed and have one totalValue.
I need a way to read all the rows in one column from an Excel file that the user picks from a fileupload control. I tried saving the excel file on the webserver with the upload control and then opening it with a OleDbConnection but that fails when running it from the webserver and gives the error:
Request for the permission of type 'System.Data.OleDb.OleDbPermission, System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.
This works fine when just running it localhost, so i figured it might be a problem with security level at the webserver which i cant change. Instead i tried doing it with a streamreader direct from the fileupload control and because theres no need for saving the excel file on the server, but im not sure how to query the rows i need this way.
i have table a with fourcolumns and more which need not be considered i would like the fourth column which has a special charcater ^ within it to act as row seperator such tht the values of 1,2,3 are comon for ALL THE ROWS BASED ON THE SPECIAL CHARACTER.
I am trying to follow an example from Lesson #25 of [URL] I am not trying to do paging as the above example is doing. I simply want to do a Query and return the the number of rows back in my code behind.
I have a DAL Typed Dataset with the following Query
SELECT COUNT(*) AS Expr1 FROM Reservation WHERE (DateUsed = @DateUsed) AND (SiteID = @SiteID)
I would like to know if there is a way that I can use DISTINCT on one column's values but need to show other columns where the value of the DISTINCT column is equal to another table's column
How can i select all columns of table but to distinct by one column? i am tryin to figure it out without success, i know how to make distinct (select distinct column from table, but i need all the values from the table and to distinct by Delcompany.
what I wanna achieve is to have a statement that selects distinct uniqueid's from the chapterID field and with every duplicate I would like to have the record with the highest version number
I have one big DataTable with X rows. I want to select Y rows from it and bind them to a new ViewList. While doing it, I want to delete these rows from the DataTable (Having X - Y rows).
What is the best and fast way to do it?
I don't know if it is better to create a new DataTable to have the Y and after that bind them to a ViewList or something else?
I'm also looking for example in code how to select/delete rows from DataTable.