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Programming the Perl DBI
book

Programming the Perl DBI

by Tim Bunce, Alligator Descartes
February 2000
Intermediate to advanced content levelIntermediate to advanced
364 pages
11h 47m
English
O'Reilly Media, Inc.
Content preview from Programming the Perl DBI

Rolling Back Changes

The corollary operation to committing data to the database is to roll it back. The DBI defines a method called rollback(), which can be used to roll back the most recent uncommitted database changes.

Like commit(), the rollback() method is executed against a database handle:

$dbh->rollback();

Similarly, if rollback() is invoked while AutoCommit is enabled, a warning will be displayed similar to:

rollback ineffective with AutoCommit

signifying that the database changes have already been committed. This warning will also be displayed when rollback() is invoked against a database that has no transaction support because, by definition, AutoCommit will be enabled.

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Publisher Resources

ISBN: 1565926994Supplemental ContentErrata Page