HiveQL - How to find the column value is numeric or not using any UDF?

Question

Basically i would like to return rows based on one column value.

If the column contains non numeric values, then return those

Answer 1

I believe Hive supports rlike (regular expressions). So, you can do:

where col rlike '[^0-9]'

This looks for any non-digit character. You can expand this, if your numeric values might have decimal points or commas.