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Type:
Bug
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Status: Closed (View Workflow)
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Priority:
Major
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Resolution: Duplicate
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Affects Version/s: 3.0.7
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Fix Version/s: None
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Component/s: None
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Labels:None
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Environment:PHP 5.2.6, PostgreSQL 8.3.10
I get the following error when accessing the board-wide feed (myboard.example/feed.php).
General Error
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SQL ERROR [ postgres ]
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ERROR: invalid reference to FROM-clause entry for table "p" LINE 1: ...users u LEFT JOIN phpbb_forums f
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ON (f.forum_id = p.forum_id... ^ HINT: There is an entry for table "p", but it cannot be referenced from
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this part of the query. []
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SQL
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SELECT f.forum_id, f.forum_name, p.post_id, p.topic_id, p.post_time, p.post_subject, p.post_text,
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p.bbcode_bitfield, p.bbcode_uid, p.enable_bbcode, p.enable_smilies, p.enable_magic_url, u.username,
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u.user_id FROM phpbb_posts p, phpbb_users u LEFT JOIN phpbb_forums f ON (f.forum_id = p.forum_id)
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WHERE p.topic_id = 1 AND (p.post_approved = 1 OR p.forum_id IN (1, 2)) AND p.post_time >= 1272112460
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AND u.user_id = p.poster_id ORDER BY p.post_time DESC LIMIT 15 OFFSET 0
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BACKTRACE
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FILE: includes/db/postgres.php
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LINE: 177
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CALL: dbal->sql_error()
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FILE: includes/db/postgres.php
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LINE: 232
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CALL: dbal_postgres->sql_query()
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FILE: includes/db/dbal.php
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LINE: 170
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CALL: dbal_postgres->_sql_query_limit()
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FILE: feed.php
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LINE: 621
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CALL: dbal->sql_query_limit()
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FILE: feed.php
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LINE: 78
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CALL: phpbb_feed_base->get_item()
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I tested release 3.0.7 and the current trunk, both with MySQL and PostgreSQL. The bug appears only with PostgreSQL, but that is probably only because MySQL's relaxed restrictions on SQL queries. I have examined the query that causes the error and I think that the order of tables in the FROM clause is wrong (see e.g. http://archives.postgresql.org/pgsql-general/2006-09/msg01041.php).
To fix the bug, it is enough to change the order of tables (patch against the current trunk is attached).
- duplicates
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- Closed
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