git reset –hard HEAD^1 will take you back one commit from what you pulled. If you want it back to the state it was in before you pulled, use git reset –hard HEAD@{1}. The @{1} tracks where the head was at before the last operation that changed it in your local repo, so it will … Read more
If you define table type as InnoDB, you can use transactions. You will need set AUTOCOMMIT=0, and after you can issue COMMIT or ROLLBACK at the end of query or session to submit or cancel a transaction. ROLLBACK — will undo the changes that you have made
You just need this command: hg rollback See: http://hgbook.red-bean.com/read/finding-and-fixing-mistakes.html. (Technically, this is deprecated as of version 2.7, August 2013, but I’ve yet to see an alternative that does exactly the same thing.)
None of the other answers fix the root cause of the issue. The problem is that when Postgres raises an exception, it poisons future transactions on the same connection. The fix is to rollback the offending transaction: begin ActiveRecord…do something… rescue Exception => e puts “SQL error in #{ __method__ }” ActiveRecord::Base.connection.execute ‘ROLLBACK’ raise e … Read more
Dispose method for transaction class performs a rollback while Oracle’s class doesn’t. So from transaction’s perspective it’s implementation dependent. The using statement for the connection object on the other hand would either close the connection to the database or return the connection to the pool after resetting it. In either case, the outstanding transactions should … Read more
rake db:rollback STEP=1 Is a way to do this, if the migration you want to rollback is the last one applied. You can substitute 1 for however many migrations you want to go back. For example: rake db:rollback STEP=5 Will also rollback all the migration that happened later (4, 3, 2 and also 1). To … Read more
Download and install Team Foundation Power Tools. Open up the Visual Studio command prompt Navigate to the directory on the file system that TFS is mapped to. If you don’t do this you’ll get an “Unable to determine the workspace” error when you try to roll back Make sure everything else is checked in or … Read more
You have two options for rolling back (reverting) a changeset in Team Foundation Server 2010 Version Control. First option is using the User Interface (if you have the latest version of the TFS 2010 Power Tools installed). The other option is using the TFS 2010 version control command-line application: tf.exe rollback I have information about … Read more
Query ChangeTracker of DbContext for dirty items. Set deleted items state to unchanged and added items to detached. For modified items, use original values and set current values of the entry. Finally set state of modified entry to unchanged: public void RollBack() { var context = DataContextFactory.GetDataContext(); var changedEntries = context.ChangeTracker.Entries() .Where(x => x.State != … Read more
Note: You CANNOT UNDO this. Try git checkout -f this will discard any local changes which are not committed in ALL branches and master.