Padding zeros to the left in postgreSQL

Question

I am relatively new to PostgreSQL and I know how to pad a number with zeros to the left in SQL Server but I\'m struggling to figure this out in PostgreSQL.

I have a

Answer 1

As easy as

SELECT lpad(42::text, 4, '0')

References:

• http://www.postgresql.org/docs/current/static/functions-string.html

sqlfiddle: http://sqlfiddle.com/#!15/d41d8/3665