如何根据最新日期选择记录

Question

I am trying to get the latest record only. It works fine if i don't include "CustFile.optin" but once I add this field, it gives me all the records. Can you please help?

SELECT BEST.fname, BEST.lname, BEST.email, MAX(CustFile.status_date), CustFile.optin
FROM  BEST, CustFile
WHERE BEST.email = CustFile.email
GROUP BY BEST.fname, BEST.lname, BEST.email, CustFile.optin

Answer:

fname    lname      email    optin  date
a.fname  a.lname    aa@email    y   01/08/2015
b.fname  b.lname    bb@email    n   16/06/2016

Answer 1

Why not simply take the row WHERE MAX(CustFile.status_date) = CustFile.status_date ?

SELECT * 
FROM BEST, CustFile 
WHERE 
    BEST.email = CustFile.email AND 
    MAX(CustFile.status_date) = CustFile.status_date

Or order by date (desc) and take only the top most as @Paul-Spiegel says

SELECT * 
FROM BEST, CustFile 
WHERE BEST.email = CustFile.email
ORDER BY status_date DESC 
LIMIT 1