Path: csiph.com!newsfeed.hal-mli.net!feeder3.hal-mli.net!newsfeed.hal-mli.net!feeder2.hal-mli.net!newsfeed.xs4all.nl!newsfeed4.news.xs4all.nl!xs4all!newsgate.cistron.nl!newsgate.news.xs4all.nl!post.news.xs4all.nl!not-for-mail Return-Path: X-Original-To: python-list@python.org Delivered-To: python-list@mail.python.org X-Spam-Status: OK 0.002 X-Spam-Evidence: '*H*': 1.00; '*S*': 0.00; 'case.': 0.05; 'debug': 0.05; 'diff': 0.05; 'subject:sqlite3': 0.07; 'python': 0.09; 'bzr': 0.09; 'received:mail-qc0-f174.google.com': 0.09; 'yeah,': 0.09; 'cc:addr:python-list': 0.10; 'suggest': 0.11; '(when': 0.16; 'command,': 0.16; 'fine.': 0.16; 'on"': 0.16; 'url:sqlite': 0.16; 'variable.': 0.16; 'wrote:': 0.17; 'working.': 0.17; 'obviously': 0.18; 'sender:addr:gmail.com': 0.18; 'variable': 0.20; 'changes': 0.20; 'putting': 0.20; 'keys': 0.22; "i'd": 0.22; 'cc:2**0': 0.23; '15,': 0.23; "i've": 0.23; 'seems': 0.23; 'idea': 0.24; 'cc:addr:python.org': 0.25; 'header:In-Reply-To:1': 0.25; 'thanks!': 0.26; 'compiled': 0.27; 'message-id:@mail.gmail.com': 0.27; 'far,': 0.29; 'mind,': 0.29; 'url:mailman': 0.29; 'source': 0.29; "i'm": 0.29; 'worked': 0.30; 'returned': 0.30; 'code': 0.31; 'url:python': 0.32; 'file': 0.32; 'could': 0.32; 'print': 0.32; 'url:listinfo': 0.32; 'getting': 0.33; 'skip:s 30': 0.33; 'curious': 0.33; 'turns': 0.33; 'that,': 0.34; 'received:google.com': 0.34; 'thanks': 0.34; 'robert': 0.35; 'open': 0.35; 'received:209.85': 0.35; 'really': 0.36; 'but': 0.36; 'url:org': 0.36; "didn't": 0.36; 'useful': 0.36; 'should': 0.36; 'too': 0.36; 'possible': 0.37; 'execute': 0.37; 'does': 0.37; 'why': 0.37; 'received:209': 0.37; 'far': 0.37; 'received:209.85.216': 0.37; 'subject:: ': 0.38; 'easier': 0.38; 'object': 0.38; 'sure': 0.38; 'called': 0.39; 'where': 0.40; 'skip:" 10': 0.40; 'header:Received:5': 0.40; 'url:mail': 0.40; 'skip:u 10': 0.60; 'first': 0.61; 'late.': 0.65; 'foreign': 0.72; 'day': 0.73; '2013': 0.84; 'difference.': 0.84; 'glad': 0.86; 'can!': 0.91 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:cc:content-type; bh=VL/lgB884rspIBmPRBuM71QZz6Khsry2SIEqJ0vE+WQ=; b=tBlQ3P4ng+GyRwxJ/3D/X375tDvGwIpUkbsEvDG8oIuOfAhpyucZ4n2nZ5QeqkF6Ya o6XzCyCbJFzVTqhODQemhUMLm5YebuayBZkaZWe2ulQ28j24sTJZx0MxePFBJpF5Qcia caqr9PgMlc+Y1Y9b2jqw7OXBcuL3VXYjkN6O8bRhYrEswHiWKhwNgJQ+pwTTSf9c0iXA NdkinH8Z+nsP7F6r1dEJPJhip5lsz9/Y4CARevmMttdfLo5xjLKdGHAOVw1QxyMr2jKR ai0O7nOVrHPzT9RpkNlv2ZQolHIT/i2sAULoe5an+QQiYftpMAjihGCQrUj7Kdv7XY37 +yIA== MIME-Version: 1.0 Sender: robertkday@gmail.com In-Reply-To: <8d9daaa7-091c-4810-85d2-0a7b03838441@googlegroups.com> References: <2fce91ea-374c-4f55-9e53-fe4032c2f5fd@googlegroups.com> <8d9daaa7-091c-4810-85d2-0a7b03838441@googlegroups.com> Date: Tue, 15 Jan 2013 22:27:28 +0000 X-Google-Sender-Auth: kIy3Z0I3H0Sa6AZe-udxy5HhVg4 Subject: Re: sqlite3 puzzle From: Rob Day To: llanitedave Content-Type: text/plain; charset=ISO-8859-1 Cc: python-list X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: General discussion list for the Python programming language List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Newsgroups: comp.lang.python Message-ID: Lines: 70 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1358288851 news.xs4all.nl 6929 [2001:888:2000:d::a6]:53973 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:36870 Glad I could help! Using a local source control system like git, bzr or hg is really useful in situations like these - it's far, far easier to debug issues of the form "I made changes and now it's broken" when you can do `git diff yesterday's-version today's-version` and see exactly what the changes were. On 15 January 2013 20:29, llanitedave wrote: > On Tuesday, January 15, 2013 9:13:13 AM UTC-8, Rob Day wrote: >> On 15 January 2013 15:51, llanitedave wrote: >> >> > Thanks for the suggestion, Rob, but that didn't make any difference. I've never had an issue with putting the execute object into a variable and calling "fetch" on that variable. >> >> > >> >> > I can accept reality if it turns out that foreign keys simply isn't enabled on the Python distribution of sqlite, although I don't know why that should be the case. I'm just curious as to why it worked at first and then stopped working. >> >> >> >> Well - you might be able to accept that, but I'm not sure I can! If it >> >> was working before, it must be compiled in, and so it must be possible >> >> to make it work again. >> >> >> >> http://www.sqlite.org/foreignkeys.html#fk_enable seems to suggest that >> >> "PRAGMA foreign_keys = ON" never returns anything, and it's only >> >> "PRAGMA foreign_keys" which returns 0, 1 or None (when unsupported). >> >> With that in mind, does the following code work? >> >> >> >> # open database file >> >> >> >> self.geologger_db = sqlite3.connect('geologger.mgc') >> >> self.db_cursor = self.geologger_db.cursor() >> >> self.db_cursor.execute("PRAGMA foreign_keys = ON") >> >> self.db_cursor.execute("PRAGMA foreign_keys") >> >> print self.db_cursor.fetchone() > > "http://www.sqlite.org/foreignkeys.html#fk_enable seems to suggest that "PRAGMA foreign_keys = ON" never returns anything, and it's only "PRAGMA foreign_keys" which returns 0, 1 or None (when unsupported)." > > That was it, exactly, Rob. I don't know where I got the idea that I was getting a '1' from the 'ON' command, although I was sure that I'd seen it. But once I just called "foreign_key" it returned just fine. > > Ummm... Obviously I was up fiddling around too late. Yeah, that's it. > > > Thanks! It's solved now. > -- > http://mail.python.org/mailman/listinfo/python-list -- Robert K. Day robert.day@merton.oxon.org