Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

Need to put multiple tables into an OleDbDataAdapter

Posted on 2007-11-22
2
Medium Priority
?
241 Views
Last Modified: 2013-12-16
I have this code working fine.  But I need to access the ZipCode, contained in the ZipCodes table, from the ordersDataSet.  Can I do that?  I had the impression that the SQL comand was creating one big long record by adding the columns from various tables, when the CustomerID and ZipCode match between the tables.  But how do I reference the ZipCode?  The exception I get says the ZipCode is not part of the OrderHeaders table.


Thanks,
newbieweb


                connectString = @"Provider=Microsoft.Jet.OLEDB.4.0;" + @"Data source=" + DataSource + ";Jet OLEDB:Database";

                sql = "SELECT * FROM OrderHeaders, CustomerFiles, ZipCodes WHERE ";
                sql += "OrderHeaders.CustomerID=CustomerFiles.CustomerID AND ";
                sql += "CustomerFiles.ZipCode=ZipCodes.ZipCode";

                if (orderDataAdapter == null || orderDataSet == null)
                {
                    orderDataAdapter = new OleDbDataAdapter(sql, connectString);
                    myOrderHistory = new MyOrderHistory(Handles, this);
                    orderDataSet = new DataSet();
                    orderDataAdapter.Fill(orderDataSet, "OrderHeaders");
                }
                else
                {
                    orderDataSet.Clear();
                    orderDataAdapter.Fill(orderDataSet, "OrderHeaders");
                }
                int numRows = orderDataSet.Tables["OrderHeaders"].Rows.Count;
                int tables = orderDataSet.Tables.Count;
                myOrderHistory.CreateNewOrders(orderDataSet);
0
Comment
Question by:newbieweb
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
2 Comments
 
LVL 6

Accepted Solution

by:
-DJL- earned 2000 total points
ID: 20336671
Try the SQL statement below.

You need to use the JOIN command if you want the output to be one big table
SELECT * FROM OrderHeaders INNER JOIN CustomerFiles ON (OrderHeaders.CustomerID=CustomerFiles.CustomerID) INNER JOIN ZipCodes ON (CustomerFiles.ZipCode=ZipCodes.ZipCode)

Open in new window

0
 

Author Comment

by:newbieweb
ID: 20336681
I tried this:

orderDataAdapter.Fill(orderDataSet, "OrderHeaders, CustomerFiles, ZipCodes");

and it worked great.

Thanks.
0

Featured Post

Visualize your virtual and backup environments

Create well-organized and polished visualizations of your virtual and backup environments when planning VMware vSphere, Microsoft Hyper-V or Veeam deployments. It helps you to gain better visibility and valuable business insights.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article shows how to get a list of available printers for display in a drop-down list, and then to use the selected printer to print an Access report or a Word document filled with Access data, using different syntax as needed for working with …
Instead of error trapping or hard-coding for non-updateable fields when using QODBC, let VBA automatically disable them when forms open. This way, users can view but not change the data. Part 1 explained how to use schema tables to do this. Part 2 h…
This tutorial covers a step-by-step guide to install VisualVM launcher in eclipse.
Visualize your data even better in Access queries. Given a date and a value, this lesson shows how to compare that value with the previous value, calculate the difference, and display a circle if the value is the same, an up triangle if it increased…
Suggested Courses

670 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question