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DROP TABLE IF EXISTS fractest;  
CREATE TABLE fractest( c1 TIME(2), c2 DATETIME(2), c3 TIMESTAMP(2) ); 
INSERT INTO fractest VALUES  
    ('17:51:04.777', '2018-09-08 17:51:04.777', '2018-09-08 17:51:04.777');  
INSERT INTO fractest VALUES  
    ('17:51:04.555', '2018-09-08 17:51:04.555', '2018-09-08 17:51:04.555');  
INSERT INTO fractest VALUES  
    ('17:51:04.444', '2018-09-08 17:51:04.444', '2018-09-08 17:51:04.444');  
SELECT * FROM fractest;

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