Incorrect Query Result when Adding Columns

CREATE TABLE IF NOT EXISTS t0 (

    c0 FLOAT,

    c0_1 DOUBLE,

    c0_2 VARCHAR(100),

    c1 VARCHAR(500) NULL

);

INSERT INTO t0 VALUES ('0.0171682', '0', '0.0171682', '0.028583989421476108');

MariaDB [test]> SELECT * FROM T0;

+-----------+------+-----------+----------------------+

| c0        | c0_1 | c0_2      | c1                   |

+-----------+------+-----------+----------------------+

| 0.0171682 |    0 | 0.0171682 | 0.028583989421476108 |

+-----------+------+-----------+----------------------+

SELECT (t0.c0_1 + t0.c0_2) AS ref0 FROM t0 WHERE (t0.c0_1 + t0.c0_2);