PadLeft function in T-SQL

Question

I have the following table A:

id
----
1
2
12
123
1234

I need to left-pad the id values with zero\'s:

id
----
0         


        

Answer 1

More efficient way is :

Select id, LEN(id)
From TableA
Order by 2,1 

The result :
id
----
1
2
12
123
1234