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SELECT yearFrom, yearTo INTO TempTable from ( VALUES (2009, 2010), (2005, NULL), (2010, 2015), (2015, 2018), (2010, NULL) ) v(yearFrom, yearTo)
5 rows affected
DECLARE @year int = 2010 SELECT * FROM TempTable WHERE (yearTo IS NULL AND yearFrom = @year) OR (yearFrom <= @year and @year <= yearTo)
yearFrom
yearTo
2009
2010
2010
2015
2010
null