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CREATE TABLE PrevValue ( Id INT ,Value INT NULL ); INSERT INTO PrevValue VALUES ( 12, NULL), ( 31, 100), ( 52, -72), ( 77, NULL), (111, 17), (131, NULL), (174, NULL), (190, NULL), (231, 34); select * from PrevValue; select id, value, coalesce(value, lag(value) over (order by id)) as new from PrevValue;
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