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SQL is a standard language for storing, manipulating and retrieving data in databases. Our SQL tutorial will teach you how to use SQL in: MySQL, SQL Server, MS Access, Oracle, Sybase, Informix, Postgres, and other database systems. Start learning SQL now » Examples in Each Chapter.
In SQL, a ROLLBACK statement is used to undo a transaction that is currently in progress. When a transaction is started, SQL begins keeping track of all the changes made to the database during that transaction.
Aug 3, 2022 · ROLLBACK is the SQL command that is used for reverting changes performed by a transaction. When a ROLLBACK command is issued it reverts all the changes since last COMMIT or ROLLBACK.
Dec 26, 2019 · Transactions in the SQL server are rollbacked automatically. However, with the rollback SQL statement, you can manually rollback a transaction based on certain conditions. In this article, you will see what a transaction is and how it can be rollbacked both manually and automatically.
Definition and Usage. The rollback () / mysqli_rollback () function rolls back the current transaction for the specified database connection. Tip: Also look at the commit () function, which commits the current transaction, and the autocommit () function, which turns on or off auto-committing database modifications.
Apr 16, 2024 · You can use ROLLBACK TRANSACTION to erase all data modifications made from the start of the transaction or to a savepoint. It also frees resources held by the transaction. Rolling back a transaction doesn't include changes made to local variables or table variables. These changes aren't erased by this statement. Transact-SQL syntax conventions.
Mar 1, 2010 · 65. I accidentally deleted some huge number of rows from a table... How can I roll it back? I executed the query using PuTTY. I'll be grateful if any of you can guide me safely out of this... mysql. sql-delete. rollback. edited Dec 29, 2018 at 9:04. Peter Mortensen. 31.3k 22 109 132. asked Mar 1, 2010 at 14:48. Vijay. 5,413 10 55 88.
