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Subject: Re: mysql solution
From: Ferrous Cranus <nikos.gr33k@gmail.com>
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Xref: csiph.com comp.lang.python:37617

=CE=A4=CE=B7 =CE=A0=CE=AD=CE=BC=CF=80=CF=84=CE=B7, 24 =CE=99=CE=B1=CE=BD=CE=
=BF=CF=85=CE=B1=CF=81=CE=AF=CE=BF=CF=85 2013 5:39:54 =CE=BC.=CE=BC. UTC+2, =
=CE=BF =CF=87=CF=81=CE=AE=CF=83=CF=84=CE=B7=CF=82 Lele Gaifax =CE=AD=CE=B3=
=CF=81=CE=B1=CF=88=CE=B5:

> UPDATE visitors
>=20
>    SET visitors.hits=3Dvisitors.hits+1,=20
>=20
>        visitors.useros=3D%s,
>=20
>        visitors.browser=3D%s,=20
>=20
>        visitors.date=3D%s
>=20
> WHERE visitors.pin=3D(SELECT counters.pin
>=20
>                     FROM counters
>=20
>                     WHERE counters.page=3D%s)
>=20
>   AND visitors.host=3D%s
>=20
>=20
>=20
> But I wonder about the "logic" here: why are you storing the "useros",
>=20
> "browser" and "date" in a table where the primary key seems to be
>=20
> ("pin", "host")? I mean, what happens if a user visits the same page
>=20
> twice, first with Firefox and then with Chrome?


it doesn't work, it creates new entries on every webpage visit instead of u=
pdating.

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 =3D hits + 1''', (htmlpage, 1) )
	except MySQLdb.Error, e:
		print ( "Error %d: %s" % (e.args[0], e.args[1]) )
	=09
	# update existing visitor record if same pin and same host found
	try:
		cursor.execute('''UPDATE visitors SET hits=3Dhits+1, useros=3D%s, browser=
=3D%s, date=3D%s=20
                                                  WHERE id=3D(SELECT id FRO=
M counters WHERE page=3D%s) AND host=3D%s''',
                                                                           =
 (useros, browser, date, htmlpage, host))
	except MySQLdb.Error, e:
		print ( "Error %d: %s" % (e.args[0], e.args[1]) )
=09
	# insert new visitor record if above update did not affect a row
	if cursor.rowcount =3D=3D 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.....