Extract non numerical values from a numeric column in databricks

Question

I have received a large database where the id column which should be numeric value (currently stored as string) has some non numeric values. I wanted to extract all such cases where the column has non numeric values. I am using DataBricks.

I tried this but couldn't find REGEXP_LIKE function

SELECT customer FROM customer_check
 WHERE REGEXP_LIKE (customer, '^[a-zA-Z]*$')

Thanks!

Answer 1

You can use rlike instead:

WHERE customer RLIKE '[^0-9]')

This will find any customer that has a character that is not a number. If numbers can be decimals or negative, you can extend the regular expression.