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euclid1990/NULL_AS_MAX.sql

Created November 11, 2021 04:57
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Consider NULL as MAX in SQL
Raw
NULL_AS_MAX.sql
DROP FUNCTION IF EXISTS fconsider_null_as_max;
DELIMITER //
CREATE FUNCTION fconsider_null_as_max (originalYear INT)
RETURNS INT
BEGIN
RETURN CASE
WHEN MAX(originalYear IS NULL) = 0 THEN MAX(originalYear)
ELSE originalYear
END;
END; //
DELIMITER ;
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