Alphanumeric sorting with PostgreSQL

Question

In the database, I have various alpha-numeric strings in the following format:

10_asdaasda
100_inkskabsjd
11_kancaascjas
45_aksndsialcn
22_dsdaskjca
100_skdn         


        

Answer 1

You can use regular expressions with substrings

   order by substring(column, '^[0-9]+')::int, substring(column, '[^0-9]*$')