Database.Rollback
From Xojo Documentation
Method
Cancels an open transaction restoring the database to the state it was in before the transaction began.
Notes
You will generally want to rollback database changes if a database error occurs within the transaction.
You have to have an open transaction to be able to use Rollback. On SQLite (and other databases), you can start a transaction with this command:
BEGIN TRANSACTION
It can be sent using SQLExecute:
DB.SQLExecute("BEGIN TRANSACTION")
Sample Code
This code uses rollback to revert database changes in a transaction when an error occurs:
// Prior DB code has run
If Not DB.Error Then
DB.Commit
Else
MsgBox("Error: " + DB.ErrorMessage)
DB.Rollback
End If
If Not DB.Error Then
DB.Commit
Else
MsgBox("Error: " + DB.ErrorMessage)
DB.Rollback
End If