regex - Oracle SQL - REGEXP_LIKE contains characters other than a-z or A-Z

Question

I would like to create a query where I select all records which contain characters that are not a-z or A-Z

so something like this

SELECT * FROM mytable WHERE REGEXP_LIKE(column_1, '![A-Z] [a-z]')

Answer 1

The ^ negates a character class:

SELECT * FROM mytable WHERE REGEXP_LIKE(column_1, '[^A-Za-z]')