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02.29.2008 at 05:19AM PST, ID: 23203593
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Import Data from one Database to Another C#

Tags: Microsoft, Visual Studio, 2005, SQL Queries
I need to import data from one Microsoft Access database to another, preferrably using a single SQL query within a C# program.  For the particular data I'm working with, it would not be useful to fill an OLEDb.DataTable with the data from one database and then import it into the other database from the OleDb.Datatable because the number of records that the user may have in the databases could number in the thousands, if not millions.  So, I need some other way to perform this operation.  

Any help would be appreciated. Thanks.
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Question Stats
Zone: Microsoft
Question Asked By: l2Bravo
Solution Provided By: Wikkard
Participating Experts: 1
Solution Grade: B
Views: 92
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02.29.2008 at 05:26AM PST, ID: 21012930

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02.29.2008 at 05:36AM PST, ID: 21012996

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03.03.2008 at 03:01PM PST, ID: 21036638

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02.29.2008 at 05:26AM PST, ID: 21012930
You could create a linked table in say the destination database which points to your source database.
Then you could simply cut and paste - No code required.

This would take a while because no matter how you do it you are going to have to copy each row individually.

If your access datbase has this many row perhaps you should think about upgrading to SQL server.  This will has a number of advantage not least of which is speed.

In my experience access starts to go a bit nuts after you have 100,000 records or so, it definitely slows down.


 
02.29.2008 at 05:36AM PST, ID: 21012996
Thanks, but I actually do need to perform this import from within the program, basically because the import should occur when the user of the software performs a specific operation and I have no way of knowing in advance the exact file locations of the databases used as the source and destination.  

Incidentally, I do think my company will switch to SQL Server in a few years for the software that currently uses the Access database.  Right now, no customer has had the software long enough to pile up the number of records I mentioned, so the switch is not urgent.  For now, I have no choice but to work with the Acces database.  
 
03.03.2008 at 03:01PM PST, ID: 21036638
I think you will need to create a datareader with the source data and then loop over it inserting into your destination table.

I'm not aware of any other way to do this, sorry.

Accepted Solution
 
 
20080236-EE-VQP-29 / EE_QW_2_20070628