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ADO.NET - Populating multi-table dataset in MS Access

Posted on 2007-03-22
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Last Modified: 2008-09-12
Hello,

I'm trying to figure out how to populate a dataset with 2 tables in ADO.NET.  The code below should work but it doesn't.  It throws an exception at the line 'da.Fill(dSetWF)' saying 'Characters found after end of SQL statement.'  I believe this is because microsoft Access doesn't allow multi statement queries.  What is the best way to accomplish what I am trying to do?

Thanks.

Here is my code:

dSetWF = new DataSetWorkflow();  //dSetWF is a typed dataset

OleDbDataAdapter da = new OleDbDataAdapter("select * from workflow; select * from comments;", cnWF);
da.TableMappings.Add("Table", "Workflow");
da.TableMappings.Add("Table1", "Comments");
da.Fill(dSetWF);

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Question by:prosh0t
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dstanley9 earned 500 total points
ID: 18773198
Two separate queries?

dSetWF = new DataSetWorkflow();  //dSetWF is a typed dataset

OleDbDataAdapter daWorkflow = new OleDbDataAdapter("select * from workflow", cnWF);
OleDbDataAdapter daComments = new OleDbDataAdapter("select * from comments", cnWF);
daWorkflow.Fill(dSetWF.Workflow);
daComments.Fill(dSetWF.Comments);

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Author Comment

by:prosh0t
ID: 18773342
i was just hoping there was a more elegant way to do keep this confined to 1 data adapter... is this impossible with ms access?




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Author Comment

by:prosh0t
ID: 18773349
i forgot to mention this is access 97

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Expert Comment

by:dstanley9
ID: 18773399
I don't believe the JET driver supports batch queries.

From http://msdn2.microsoft.com/en-us/library/aa832700(office.10).aspx:

"Access databases cannot return multiple Recordset objects because Microsoft Jet SQL statements do not support multiple SELECT statements."

This is in reference to ADO but it will apply to ADO.NET as well
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Author Comment

by:prosh0t
ID: 18773821
Thanks
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