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CREATE TABLE d ( date datetime, val int ); insert into d values ('2022-04-01', 10), ('2022-04-15', 15); select * from d; WITH [range] AS ( SELECT 0 as v UNION ALL SELECT v + 1 FROM range t WHERE t.v < 29 ) SELECT DISTINCT dateadd(day, v, '2022-04-01') Date, FIRST_VALUE(D.val) OVER (PARTITION BY v ORDER BY D.Date DESC) Val FROM [range] LEFT JOIN D ON D.Date <= dateadd(day, v, '2022-04-01') ORDER BY Date, Val
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