rollback

Well basically I have this script that takes a long time to execute and occasionally times out and leaves semi-complete data floating around my database. (Yes I know in a perfect world I would fix THAT instead of implementing commits and rollbacks but I am forced to not do that) Here is my basic code (dumbed down for simplicity): $database = new PDO("mysql:host=host;dbname=mysql_db","username","password"); while (notDone()) { $add_row = $database->prepare("INSERT INTO table (columns) VALUES (?)"); $add_row->execute(array('values')); //PROCESSING STUFF THAT TAKES A LONG TIME GOES HERE }

How can I rollback an UPDATE query in SQL server 2005? I need to do this in SQL, not through code. begin transaction // execute SQL code here rollback transaction If you've already executed the query and want to roll it back, unfortunately your only real option is to restore a database backup. If you're using Full backups, then you should be able to restore the database to a specific point in time. You need this tool and you can find the transaction and reverse it. ApexSQL Log You can use implicit transactions for this SET IMPLICIT_TRANSACTIONS ON update Staff set staff_Name='jas' where staff

If I create a Stored Procedure in SQL and call it ( EXEC spStoredProcedure ) within the BEGIN/END TRANSACTION, does this other stored procedure also fall into the transaction? I didn't know if it worked like try/catches in C#. Yes, everything that you do between the Begin Transaction and Commit (or Rollback) is part of the transaction. Miles Sounds great, thanks a bunch. I ended up doing something like this (because I'm on 05) BEGIN TRY BEGIN TRANSACTION DO SOMETHING COMMIT END TRY BEGIN CATCH IF @@TRANCOUNT > 0 ROLLBACK -- Raise an error with the details of the exception DECLARE @ErrMsg

I am trying to create an ActiveRecord Object.But I'm getting this error while creating it. (0.1ms) ROLLBACK ActiveRecord::StatementInvalid: PG::InFailedSqlTransaction: ERROR: current transaction is aborted, commands ignored until end of transaction block Any ideas folks regarding the issue. B Seven 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 #{

Say my commit interval is 1000. And during writing I get a error at 990th record which is skippable as per skip policy. So a rollback will occur and the writer will start again writing the same records from record 1. However, this time, It is commiting on each record. It does not honour commit interval. This is making the job dead slow. Why the behavior is like that ?? Am I missing something in my configuration ?? Thanks. that bevaviour is mandatory for spring batch to isolate the bad item(s), basically it rollbacks the chunk and processes/writes each item with commit-rate=1 to find the bad

Although I use Git pretty often, I'm still a beginner. Sometimes, I make a mistake but spot it only after I have committed it. At that point, I usually have to spend a long time on the Internet looking for the command I should use to get rid of it (before pushing). Every time that happens, I find myself wondering what's the difference between the four terms that I usually come across: revert, amend, rollback, undo. I've that it's finally time to learn those differences once and for all. What are they? jub0bs The terms revert and amend have a well defined meaning in Git. In contrast, rollback

In the below code if any exception is thrown while executing the the SQL statements we should expect an implicit rollback on the transaction as the transaction was not committed, it goes out of scope and it gets disposed: using (DbTransaction tran = conn.BeginTransaction()) { // // Execute SQL statements here... // tran.Commit(); } Is the above an acceptable practice, or should one catch the exception and explicitly make a call to tran.Rollback() as shown below: using (DbTransaction tran = conn.BeginTransaction()) { try { // // Execute SQL statements here... // tran.Commit(); } catch { tran

I did a big mistake that I updated a table without 'where' clause in MySQL :'( It is auto-committed. Is there any way to rollback from it? No, there's no query that will "undo" a committed data-modifying query. If you have a backup of the database, you can restore the backup and use DBA tools (in MySQL's case, it's mysqlbinlog ) to "replay" all data-modifying queries from the logs since the backup back to the database, but skip over the problem query. If you don't have a backup and all logs since the that backup, there's nothing you can do to recover the data. Look up transaction logs. I'll