Time::Piece::MySQL is a very useful module for MySQL users. It is simply an extension to Time::Piece that provides a handful of methods for converting back and forth between Time::Piece objects and the MySQL date/time types: date, time, datetime, and timestamp. (The year type is available from Time::Piece, so it doesn't need to be here.)

As an example, say i had a table of events that contained an id and a datetime field:

+---------+------------------+
| Field   | Type             |
+---------+------------------+
| id      | int(10) unsigned |
| date    | datetime         |
+---------+------------------+

and i wanted to add 50 days to to each date. The following snippet would do just that:

use strict;
use warnings;
use DBI;
use Time::Seconds;
use Time::Piece::MySQL;

my $dbh   = DBI->connect( ... );
my $sth   = $dbh->prepare('update events set date = ? where id = ?');
my $dates = $dbh->selectall_arrayref(
   'select id,date from events', {Slice => {}}
);

for (@$dates) {

   my $date = localtime->from_mysql_datetime( $_->{date} );
   $date += ONE_DAY * 50;
   $sth->execute( $date->mysql_datetime, $_->{id} );
}
[download]

A very trivial example, but i think it demonstrates how it can make someone's Perl/MySQL script easier to work with.

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