mysql中如何从Cursor中Fetch特定项？

比如

DECLARE mycur CURSOR FOR
    SELECT
        `column1`,
        `column2`,
        `column3`
    FROM
        `foo`.`bar`;

现在只想从游标里取出column1，可以这样写么？

DECLARE strColumn1 VARCHAR(16);

OPEN mycur;
FETCH
    `column1`
FROM
    mycur
INTO
    strColumn1;
CLOSE mycur;