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drop procedure if exists sp1;
CREATE PROCEDURE sp1()
BEGIN
DECLARE v1, v2, v3, v4 DECIMAL(28,12);
DECLARE v3_2, v4_2 DECIMAL(28, 12);
DECLARE counter INT;
SET v1 = 1;
SET v2 = 2;
SET v3 = 1000000000000;
SET v4 = 2000000000000;
SET counter = 0;
WHILE counter < 100000 DO
SET v1 = v1 + 0.000000000001;
SET v2 = v2 - 0.000000000001;
SET v3 = v3 + 1;
SET v4 = v4 - 1;
SET counter = counter + 1;
END WHILE;
SET v3_2 = v3 * 0.000000000001;
SET v4_2 = v4 * 0.000000000001;
SELECT v1, v2, v3, v3_2, v4, v4_2;
END//
call sp1()//
v1 v2 v3 v3_2 v4 v4_2
1.000000100000 1.999999900000 1000000100000.000000000000 1.000000100000 1999999900000.000000000000 1.999999900000
drop procedure sp1;
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