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with t as ( select row_number() over(order by total_amount) as n, count(1) over() as cnt, total_amount from bookings where book_date between '2017-07-01' and '2017-07-31 23:59:59' ) select t.total_amount, t2.total_amount from t ,(select total_amount from t where n = cnt / 2 + 1) as t2 where n = cnt / 2

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