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Alex
Name:Alex Dybenko

Location:Moscow, Russia

Sunday, December 12, 2010

DAO RecordsAffected property

RecordsAffected property returns the number of records affected by the most recently invoked Execute method. Can be useful when you need to update a record in a table, and if record not exists – add it. Normally this is solved by opening recordset and using NoMatch property to test if record exists. Using RecordsAffected property you can do this in 3 lines:

Dim dbs As DAO.Database
Set dbs = CurrentDb
dbs.Execute "UPDATE Sales SET Amount=Amount + " & _
varAmount & " Where SalesDate=" & varDate, dbFailOnError
If dbs.RecordsAffected = 0 Then
dbs.Execute "INSERT INTO Sales (Amount, SalesDate) Values(" _ & varAmount & ", " & varDate & ")", dbFailOnError
End If

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