Backticks not added when using custom operator (v1.6.2)

[eluser]adwin[/eluser]
i think backtick is okay with sql query. it can help you to solve some problem.

here is my example:
I have a table which has field called 'delete', it just a boolean to check whether the record deleted or not (not real delete record but delete by flag only). if you try to do this query : select * from mytable where delete = 'N' ; --> it will produce error .. but if the backtick used then it will the normal query.