For Dateadd function , DD and WK keyword is been considered as column names

[VinayakaCN]

its a Great piece of work, but a small bug, for the below query, DD and WK keyword is been returned as columns , which ideally its not. so appreciate your fix.

SQL_parser = Parser("""
select
dateadd(dd,30, DateReleased),
dateadd(WK,2, DateReleased)
from test a
""")
SQL_parser.columns

Tip : probably adding DD WK YY/YYYY as reserved keywords and ignore from columns list.