Re: SQLite3 in Python 2.7 Rejecting Foreign Key Insert

References	(5 earlier) <ea4e3af8-f173-4706-ba4e-4eca9d701e40@googlegroups.com> <CAPTjJmp4Y5zowWn5yFtJutKO4H5jVtqLaNtWqEpA6B35xNdsNA@mail.gmail.com> <m4s5er$sg1$1@ger.gmane.org> <mailman.16169.1416731513.18130.python-list@python.org> <qotmw7iqmom.fsf@ruuvi.it.helsinki.fi>
Date	2014-11-23 20:53 +1100
Subject	Re: SQLite3 in Python 2.7 Rejecting Foreign Key Insert
From	Chris Angelico <rosuav@gmail.com>
Newsgroups	comp.lang.python
Message-ID	<mailman.16177.1416736404.18130.python-list@python.org> (permalink)

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On Sun, Nov 23, 2014 at 8:40 PM, Jussi Piitulainen
<jpiitula@ling.helsinki.fi> wrote:
> Chris Angelico writes:
>> On Sun, Nov 23, 2014 at 7:21 PM, Frank Millman wrote:
>>
>> > To enable them, add the following -
>> >
>> > pragma foreign_keys = on;
>> >
>> > It works for me.
>>
>> Thanks, I went poking around briefly but didn't find that pragma.
>
> I didn't notice a pointer to the relevant documentation in this thread
> yet. So here, and in the rest of that page:
>
>     <http://www.sqlite.org/foreignkeys.html#fk_enable>

>From that page:

"""Foreign key constraints are disabled by default (for backwards
compatibility), so must be enabled separately for each database
connection. (Note, however, that future releases of SQLite might
change so that foreign key constraints enabled by default. Careful
developers will not make any assumptions about whether or not foreign
keys are enabled by default but will instead enable or disable them as
necessary.)"""

That explains it. Putting the "backwards" into "backwards
compatibility", but understandable, at least. I'm pointing all the
people I know to this page; just enable the things and then you can
actually trust stuff.

ChrisA

Thread

SQLite3 in Python 2.7 Rejecting Foreign Key Insert llanitedave <llanitedave@birdandflower.com> - 2014-11-22 18:11 -0800
  Re: SQLite3 in Python 2.7 Rejecting Foreign Key Insert Chris Angelico <rosuav@gmail.com> - 2014-11-23 13:22 +1100
    Re: SQLite3 in Python 2.7 Rejecting Foreign Key Insert llanitedave <llanitedave@birdandflower.com> - 2014-11-22 19:54 -0800
      Re: SQLite3 in Python 2.7 Rejecting Foreign Key Insert Michael Torrie <torriem@gmail.com> - 2014-11-22 21:58 -0700
      Re: SQLite3 in Python 2.7 Rejecting Foreign Key Insert Chris Angelico <rosuav@gmail.com> - 2014-11-23 16:41 +1100
        Re: SQLite3 in Python 2.7 Rejecting Foreign Key Insert llanitedave <llanitedave@birdandflower.com> - 2014-11-22 22:08 -0800
          Re: SQLite3 in Python 2.7 Rejecting Foreign Key Insert Chris Angelico <rosuav@gmail.com> - 2014-11-23 17:32 +1100
            Re: SQLite3 in Python 2.7 Rejecting Foreign Key Insert llanitedave <llanitedave@birdandflower.com> - 2014-11-22 22:46 -0800
            Re: SQLite3 in Python 2.7 Rejecting Foreign Key Insert Christian Gollwitzer <auriocus@gmx.de> - 2014-11-23 10:55 +0100
          Re: SQLite3 in Python 2.7 Rejecting Foreign Key Insert "Frank Millman" <frank@chagford.com> - 2014-11-23 10:21 +0200
            Re: SQLite3 in Python 2.7 Rejecting Foreign Key Insert llanitedave <llanitedave@birdandflower.com> - 2014-11-23 17:29 -0800
          Re: SQLite3 in Python 2.7 Rejecting Foreign Key Insert Chris Angelico <rosuav@gmail.com> - 2014-11-23 19:31 +1100
            Re: SQLite3 in Python 2.7 Rejecting Foreign Key Insert Jussi Piitulainen <jpiitula@ling.helsinki.fi> - 2014-11-23 11:40 +0200
              Re: SQLite3 in Python 2.7 Rejecting Foreign Key Insert Chris Angelico <rosuav@gmail.com> - 2014-11-23 20:53 +1100
          Re: SQLite3 in Python 2.7 Rejecting Foreign Key Insert Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2014-11-23 13:01 -0500
          Re: SQLite3 in Python 2.7 Rejecting Foreign Key Insert "Frank Millman" <frank@chagford.com> - 2014-11-24 10:05 +0200
          Re: SQLite3 in Python 2.7 Rejecting Foreign Key Insert Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2014-11-24 13:44 -0500
          Re: SQLite3 in Python 2.7 Rejecting Foreign Key Insert Chris Angelico <rosuav@gmail.com> - 2014-11-25 10:17 +1100
          Re: SQLite3 in Python 2.7 Rejecting Foreign Key Insert "Frank Millman" <frank@chagford.com> - 2014-11-25 07:31 +0200
          Re: SQLite3 in Python 2.7 Rejecting Foreign Key Insert Chris Angelico <rosuav@gmail.com> - 2014-11-25 17:40 +1100
  Re: SQLite3 in Python 2.7 Rejecting Foreign Key Insert Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2014-11-23 11:58 -0500
  Re: SQLite3 in Python 2.7 Rejecting Foreign Key Insert llanitedave <llanitedave@birdandflower.com> - 2014-11-23 18:22 -0800
    Re: SQLite3 in Python 2.7 Rejecting Foreign Key Insert Chris Angelico <rosuav@gmail.com> - 2014-11-24 15:49 +1100

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