Access update one tbl with contents from anohter tbl

I have a table called "Source". The source table has three fields called A, B, and C. Fields A and B are primary keys. Field C has amounts that I want to copy to my "target" table based on matching the two primary keys. The target table also has fields A, B, and C. How do I do this?
conernesto
ConernestoAsked:
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mbizupCommented:
Try running an update query:

UPDATE Source, Target
SET Target.c = Source.c
WHERE Source.a = Target.a AND source.B = Target.b

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ConernestoAuthor Commented:
I am not sure how to do this.
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mbizupCommented:
1.  Open a new query
2.  Close the "Show Table" dialog without selecting any tables.
3.  Right click the query window and select "SQL View"
4.  Copy/paste the SQL I gave you into the SQL Window
5.  Try running it by clicking the Exclamation Point above the query window OR by right-clicking the query window and selecting Datasheet View.
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ConernestoAuthor Commented:
It worked. How can I put the above code in a command button?
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mbizupCommented:
You can embed it in VBA in the click event of your command button like this:

Sub YourCommandButtonName_Click()
       Dim strSQL as string
       strSQL = "UPDATE Source, Target SET Target.c = Source.c WHERE Source.a = Target.a AND source.B = Target.b"
      CurrentDB.Execute strSQL, dbFailOnError
End Sub

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ConernestoAuthor Commented:
Thank you.
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