On 4th of March, Alvaro Herrera committed patch:
Constructors for interval, timestamp, timestamptz Author: Pavel Stěhule, editorialized somewhat by Álvaro Herrera Reviewed-by: Tomáš Vondra, Marko Tiikkaja With input from Fabrízio de Royes Mello, Jim Nasby
These are basically three new functions:
What is cool about it, that they will prevent things like:
... interval '$days days'
I.e. concatenation of strings, and then parsing as interval.
What's even better is that they take named arguments. Full list of arguments:
- make_interval(years, months, weeks, days, hours, mins, secs)
- make_timestamp(year, month, day, hour, min, sec)
- make_timestamptz(year, month, day, hour, min, sec, timezone)
All these are integers, with the exception of:
- sec/secs are double precision floats
- timezone is string
So, now you can:
select make_interval( days := 4, hours := 10, secs := 1.2 ); make_interval ------------------- 4 days 10:00:01.2 (1 row)
select make_timestamptz( year := 2014, month := 1, mday := 13, hour := 21, min := 50, sec := 0, timezone := 'Asia/Tokyo' ); make_timestamptz ------------------------ 2014-01-13 13:50:00+01 (1 row)
Cool. That should make some queries nicer to read/maintain. Thanks guys.