是否可以从sql查询返回2个值？

is it possible to return 2 values from this?

I want that HAVING clause have maximum of two.

$sql = mysql_query("
SELECT *
FROM 
    `Bill`
WHERE
    ID_Number='12345'
HAVING 
    max(`Pay_Date`)
ORDER BY
    `Pay_Date`
 DESC LIMIT 2");

you can order the result by pay_date instead.

$sql = mysql_query("
SELECT *
FROM 
    `Bill`
WHERE
    ID_Number='12345'
ORDER BY
    `Pay_Date`
 DESC LIMIT 2");

This should work because you will be ordering the results by pay_date in desc. order. So the latest two dates will be displayed.