SQL 代码规范-- Good
select
timestamp_trunc(com_created_at, year) as signup_year,
count(*) as total_companies
from companies
group by signup_year
-- Bad
select
timestamp_trunc(com_created_at, year) as signup_year,
count(*) as total_companies
from companies
group by timestamp_trunc(com_created_at, year)
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