Τη Πέμπτη, 24 Ιανουαρίου 2013 5:39:54 μ.μ. UTC+2, ο χρήστης Lele Gaifax έγραψε:
> UPDATE visitors
>
> SET visitors.hits=visitors.hits+1,
>
> visitors.useros=%s,
>
> visitors.browser=%s,
>
> visitors.date=%s
>
> WHERE visitors.pin=(SELECT counters.pin
>
> FROM counters
>
> WHERE counters.page=%s)
>
> AND visitors.host=%s
>
>
>
> But I wonder about the "logic" here: why are you storing the "useros",
>
> "browser" and "date" in a table where the primary key seems to be
>
> ("pin", "host")? I mean, what happens if a user visits the same page
>
> twice, first with Firefox and then with Chrome?
it doesn't work, it creates new entries on every webpage visit instead of
updating.
this is what i have up until now:
[code]
# insert new page record in table counters or update it if already
exists
try:
cursor.execute( '''INSERT INTO counters(page, hits) VALUES(%s,
%s)
ON DUPLICATE
KEY UPDATE hits = hits + 1''', (htmlpage, 1) )
except MySQLdb.Error, e:
print ( "Error %d: %s" % (e.args[0], e.args[1]) )
# update existing visitor record if same pin and same host found
try:
cursor.execute('''UPDATE visitors SET hits=hits+1, useros=%s,
browser=%s, date=%s
WHERE id=(SELECT id FROM
counters WHERE page=%s) AND host=%s''',
(useros, browser, date, htmlpage, host))
except MySQLdb.Error, e:
print ( "Error %d: %s" % (e.args[0], e.args[1]) )
# insert new visitor record if above update did not affect a row
if cursor.rowcount == 0:
cursor.execute( '''INSERT INTO visitors(hits, host, useros,
browser, date) VALUES(%s, %s, %s, %s, %s)''', (1, host, useros, browser, date) )
[/code]
Something is definately wrong here, its logic is not correct.....
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