sql - sqlite sorting SUM column values

Question

SELECT SUM(bytes),stamp_updated 
from acct 
where stamp_updated BETWEEN datetime('now', 'localtime','-7 hours') AND datetime('now', 'localtime') 
GROUP BY ip_src 
ORDER BY bytes DESC limit 10;

    48498275|2012-04-09 11:26:01
    6977282|2012-04-09 08:27:01
    1192705|2012-04-09 08:46:02
    3971336|2012-04-09 09:46:04
    1909543|2012-04-09 11:28:04
    265829|2012-04-09 09:11:02
    1234909|2012-04-09 10:28:04
    2396834|2012-04-09 11:28:02
    192638|2012-04-09 09:00:01
    30766141|2012-04-09 11:31:01

Why isn't the first column not getting sorted properly (DESC)?

Answer 1

You're ordering with your bytes column before they are aggregated. Try this:

SELECT SUM(bytes) AS total_bytes, stamp_updated 
FROM acct 
WHERE stamp_updated BETWEEN datetime('now', 'localtime','-7 hours') AND datetime('now', 'localtime') 
GROUP BY ip_src 
ORDER BY total_bytes DESC limit 10;