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Re: mysql solution

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From Lele Gaifax <lele@metapensiero.it>
Subject Re: mysql solution
Date Thu, 24 Jan 2013 16:39:54 +0100
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Duncan Booth <duncan.booth@invalid.invalid> writes:

> I'm not MySQL expert, but something like this might work:
>
> cursor.execute('''UPDATE visitors,counter 
> SET visitors.hits=visitors.hits+1, visitors.useros=%s,
>     visitors.browser =%s, visitors.date=%s
> WHERE visitors.pin=counter.pin AND counter.page = %s 
>     AND visitors.host=%s''',
>    (useros, browser, date, page, host))

I stopped surprising at MySQL syntax eons ago, so if that works... great!

Otherwise I would write the equivalent statement with a more "standard
syntax" (for whatever meaning of "standard" in the SQL world :-) as:

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?

hope this helps,
ciao, lele.
-- 
nickname: Lele Gaifax | Quando vivrò di quello che ho pensato ieri
real: Emanuele Gaifas | comincerò ad aver paura di chi mi copia.
lele@metapensiero.it  |                 -- Fortunato Depero, 1929.

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Thread

mysql solution Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-01-24 03:04 -0800
  Re: mysql solution Chris Angelico <rosuav@gmail.com> - 2013-01-24 22:16 +1100
    Re: mysql solution Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-01-24 05:31 -0800
      Re: mysql solution Chris Angelico <rosuav@gmail.com> - 2013-01-25 01:46 +1100
    Re: mysql solution Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-01-24 05:31 -0800
  Re: mysql solution Lele Gaifax <lele@metapensiero.it> - 2013-01-24 12:25 +0100
    Re: mysql solution Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-01-24 04:01 -0800
      Re: mysql solution Lele Gaifax <lele@metapensiero.it> - 2013-01-24 13:22 +0100
        Re: mysql solution Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-01-24 05:24 -0800
          Re: mysql solution Lele Gaifax <lele@metapensiero.it> - 2013-01-24 14:37 +0100
            Re: mysql solution Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-01-24 06:35 -0800
            Re: mysql solution Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-01-24 06:35 -0800
              Re: mysql solution Duncan Booth <duncan.booth@invalid.invalid> - 2013-01-24 15:19 +0000
                Re: mysql solution Chris Angelico <rosuav@gmail.com> - 2013-01-25 02:27 +1100
                Re: mysql solution Lele Gaifax <lele@metapensiero.it> - 2013-01-24 16:39 +0100
                Re: mysql solution Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-01-24 10:22 -0800
                Re: mysql solution Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-01-24 10:22 -0800
        Re: mysql solution Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-01-24 05:24 -0800
    Re: mysql solution Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-01-24 04:01 -0800
  Re: mysql solution Chris Angelico <rosuav@gmail.com> - 2013-01-24 22:29 +1100
  Re: mysql solution Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2013-01-24 15:43 -0500
    Re: mysql solution Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-01-25 07:43 -0800
      Re: mysql solution Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2013-01-25 16:56 -0500
        Re: mysql solution Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-01-26 02:35 -0800
        Re: mysql solution Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-01-26 02:35 -0800
    Re: mysql solution Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-01-25 07:43 -0800

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