topic Re: SQL 'SHA2_256' equivalent in SAS in SAS Programming

SQL 'SHA2_256' equivalent in SAS

Monty82 — Wed, 22 Mar 2017 10:57:39 GMT

Hi there,

somebody hashed account number using the SQL code: 'SHA2_256' . Is there a SAS equivalent function to give the same hashed account? I used SHA256 but no luck yet.

Your help will be highly appreciated.

many thanks,

Re: SQL 'SHA2_256' equivalent in SAS

LinusH — Wed, 22 Mar 2017 12:54:49 GMT

As I understand it, SAS uses the "global" available algorithm. So it shouldn't be any difference.

How did you verify that didn't have any luck?

Perhaps it's the data that changed between the environments. Transcoding/truncation of trailing blanks etc can occur.

Re: SQL 'SHA2_256' equivalent in SAS

FriedEgg — Wed, 22 Mar 2017 14:42:23 GMT

The output of the SHA256 function in SAS is the raw bytes. I assume you want the hash string. In which case you just want to combine the SHA256 function call with a PUT function and the $hex64. format. Without specifying what SQL implementation you are referring to, I can only speculate what you are really looking for.

data foo;
set sashelp.class;
hash_name=put(sha256(name),$hex64.);
run;

Re: SQL 'SHA2_256' equivalent in SAS

Monty82 — Wed, 22 Mar 2017 14:46:39 GMT

Thanks for your help. I found out what my issue was. Hashing variable from numeric and character give different values. Yes, I used the same code as you mentioned. Thanks for that.

Re: SQL 'SHA2_256' equivalent in SAS

Monty82 — Wed, 22 Mar 2017 14:47:16 GMT

Thanks for your help. I found out what my issue was. Hashing variable from numeric and character give different values. Thanks for that.