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WITH balance(userid, date, balance_amount) AS ( VALUES ('1112879', DATE '2022-08-05',700), ('1112879', DATE '2022-08-15',1500), ('1112879', DATE '2022-08-18',10100), ('1112879', DATE '2022-08-22',1700), ('1112879', DATE '2022-09-01',4200) ) select day::date, FIRST_VALUE (balance_amount) over(PARTITION BY userid ORDER BY abs(day::date - balance.date::date) asc), userid from generate_series('2022-08-01'::date, now()::date, '1 day'::interval) as day left join balance on date = day group by day, balance_amount,userid,balance.date::date ORDER BY day;

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