netezza nzload similar function to isnumeric?

Question

I have data from a flat file that I am loading into netezza via nzload.

Some of the field types are numeric however, the data received can sometimes contain invalid characters.

How can i check to make sure that the data isnumeric in my import?

I saw try_cast for T-Sql but didn't see anything similar in netezza.

Answer 1

Netezza doesn't have an equivalent to try-cast, you can however test if the value is numeric a few different ways. If you have the SQL Extensions Toolkit installed you can use a regex function.

 sql_functions.admin.regexp_like(<Column Name>, '^[+-]?[0-9]*[.]?[0-9]*$')

Otherwise you can use the translate function.

translate(<Column Name>,'0123456789','') in ('','.','-','-.')