Most efficient method for adding leading 0's to an int in sql

Question

I need to return two fields from a database concatenated as \'field1-field2\'. The second field is an int, but needs to be returned as a fixed length of 5 with leading 0\'s. T

Answer 1

Another way (without CAST or CONVERT):

SELECT RIGHT(REPLACE(STR(@NUM),' ','0'),5)