[issue23129] sqlite3 COMMIT nested in SELECT returns unexpected results

2016-08-26 Thread Berker Peksag
Berker Peksag added the comment: Thanks for the report! This is a duplicate of issue 10513. I've pushed a patch to fix this for 2.7 and 3.5+ in 030e100f048a and 81f614dd8136. -- components: +Extension Modules nosy: +berker.peksag resolution: -> duplicate stage: -> resolved status:

[issue23129] sqlite3 COMMIT nested in SELECT returns unexpected results

2016-04-11 Thread Daniel Lenski
Daniel Lenski added the comment: I agree on the nastiness of this bug. It's been plaguing my production code for months and I had been at a loss to explain why I've been getting duplicate rows until I found this SO post:

[issue23129] sqlite3 COMMIT nested in SELECT returns unexpected results

2015-03-06 Thread Gian-Carlo Pascutto
Gian-Carlo Pascutto added the comment: I've ran into this as well, when a program that was running correctly with PostgreSQL turned out to produce garbage with SQLite. Code to reproduce roughly looks like this: sel_cursor = conn.cursor() sel_cursor.execute(SELECT prim_key_id FROM

[issue23129] sqlite3 COMMIT nested in SELECT returns unexpected results

2014-12-30 Thread R. David Murray
R. David Murray added the comment: (Please trim the original message when replying to a tracker issue.) When I said, that probably means it's a doc issue, I meant that, even if it is a bug, for backward compatibility reasons we'd have to just document the behavior. Fixing the bug would then

[issue23129] sqlite3 COMMIT nested in SELECT returns unexpected results

2014-12-30 Thread Jim Carroll
Jim Carroll added the comment: Completely understood. I recently found a workaround. Setting isolation_level to None seems to mitigate the issue, ie: db = sq.connect(':memory:', isolation_level=None) I'm hoping to put some time in scrutinizing the c-api code later this week (as SQLite

[issue23129] sqlite3 COMMIT nested in SELECT returns unexpected results

2014-12-30 Thread R. David Murray
R. David Murray added the comment: Ah, then I suspect you are getting hit by the 'automatic transaction' feature of the DB2 API. So it is probably not the commit, but the subsequent implicit 'begin transaction' that is causing the problem. The trick then is to figure out why that affects

[issue23129] sqlite3 COMMIT nested in SELECT returns unexpected results

2014-12-29 Thread Jim Carroll
New submission from Jim Carroll: I reported this to the sqlite mailing list, and the comments I received suggested the problem may by the python sqlite connector issue, so I'm opening this as a bug report. I understand that performing a SELECT and nested COMMIT on the same table is not

[issue23129] sqlite3 COMMIT nested in SELECT returns unexpected results

2014-12-29 Thread R. David Murray
R. David Murray added the comment: I'd say you have a bug here of some sort, but I'm not sure if it is a doc bug or a code bug. Commit specifically does *not* reset the cursors, according to the code, but I'm not even sure what resetting a cursor means :) I've poked around the sqlite3

[issue23129] sqlite3 COMMIT nested in SELECT returns unexpected results

2014-12-29 Thread Jim Carroll
-Original Message- From: R. David Murray [mailto:rep...@bugs.python.org] Sent: Monday, December 29, 2014 1:08 PM To: j...@carroll.com Subject: [issue23129] sqlite3 COMMIT nested in SELECT returns unexpected results R. David Murray added the comment: I'd say you have a bug here