[Filter] QUALIFY clause on a SELECT ... GROUP BY raises syntax error

[ohaibbq]

Related to #147

WITH produce AS (
	SELECT 'kale' AS item, 23 AS purchases
)
SELECT item, sum(purchases)
FROM produce
GROUP BY item
QUALIFY ROW_NUMBER() OVER (PARTITION BY item ORDER BY item) = 1

Expected

item	col1
kale	23

Actual

failed to query ...: near "WHERE": syntax error