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VB.net Join two data tables

Posted on 2014-02-09
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Is it possible to join two data tables?
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Question by:murbro
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5 Comments
 
LVL 143

Expert Comment

by:Guy Hengel [angelIII / a3]
ID: 39845361
please clarify if you want to "append" the 2 data tables or if you want to do indeed a "SQL Join" ...

anyhow, first one is to be found easily by checking the Merge method of the datatable.
second one is "easily" with Linq statements, though other methods exists.
of course, if the underlying data is coming from the same database, you could indeed think about doing the "join" in sql directly...
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Author Comment

by:murbro
ID: 39845380
Hi
I want to do a SQL join.
Thanks
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LVL 143

Expert Comment

by:Guy Hengel [angelIII / a3]
ID: 39845387
you use a dataview and datarelation object to do so, see here for the starting syntax:
http://msdn.microsoft.com/en-us/library/fa04ha86%28v=vs.110%29.aspx
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Accepted Solution

by:
Éric Moreau earned 500 total points
ID: 39845402
It would be useful to have the tables structure. Do you want INNER or LEFT join?

The query will be something like:

select *
from Table1 as T1
INNER join Table2 as T2
ON T2.CommonField = T1.CommonField
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Author Closing Comment

by:murbro
ID: 39845576
Thanks very much. I am going to be doing this with a variety of tables
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