[FEATURE] [PPL] Add support to reserved keywords in PPL #1318
Description
Is your feature request related to a problem?
Currently for PPL query, the backtick `` has to be added to surround a reserved keyword in order for query engine to understand. Request to add reserved keyword support.
What solution would you like?
Query contains reserved keys do not need backtick just like any other non-reserved keywords
Do you have any additional context?
Example:
source = sample-data | stats count() by `index` --> index is reserved key and has to be surrounded with backtick to work
// Ideally just
source = sample-data | stats count() by index