Subqueries in where clause cause error

[DanCory]

Using the sample data and view from the readme, run the following query:

SEMANTIC SELECT
    year,
    region,
    AGGREGATE(revenue) AS revenue,
    AGGREGATE(revenue) AT (ALL region) AS year_total,
    AGGREGATE(revenue) / AGGREGATE(revenue) AT (ALL region) AS pct_of_year
FROM sales_v
where year in (select year from sales);

Error:

Invalid Input Error:
Query error: Parser Error: syntax error at or near "_inner"

LINE 4: ... DISTINCT FROM _outer.region AND _inner.year in (_inner.select _inner.year _inner.from _inner.sales)) AS revenue,
                                                                          ^

LINE 4: ... DISTINCT FROM _outer.region AND _inner.year in (_inner.select _inner.year _inner.from _inner.sales)) AS revenue,
                                                                          ^

LINE 1: SEMANTIC SELECT