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with recursive t1 as ( select date('2005-07-01') as date union all select date + interval 1 day from t1 where t1.date < '2005-07-31' ) -- select -- * -- from t1 select count(*) as weekend_days from t1 where dayofweek(t1.date) in (1, 7) ; show status like 'Last_query_cost';

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