FROM has to be in upper case

[DanCory]

Change one of the samples to use from in lower case:

-- Nested percentages (% of year, and that year's % of total)
SEMANTIC SELECT
    year,
    region,
    AGGREGATE(revenue) AS revenue,
    100.0 * AGGREGATE(revenue) / AGGREGATE(revenue) AT (ALL region) AS pct_of_year,
    100.0 * AGGREGATE(revenue) AT (ALL region) / AGGREGATE(revenue) AT (ALL) AS year_pct_of_total
from sales_v;

returns

Invalid Input Error:
Query error: Binder Error: Referenced table "_outer" not found!

[DanCory]

I got the same error if I put a line break between from and sales_v

[nicosuave]

Thanks for the report!