[drupal-devel] [bug] Forum module's use of if in Postgresql

adrian drupal-devel at drupal.org
Tue May 24 22:28:22 UTC 2005

Issue status update for http://drupal.org/node/23499

 Project:      Drupal
 Version:      4.6.0
 Component:    forum.module
 Category:     bug reports
 Priority:     normal
 Assigned to:  patrickslee
 Reported by:  cchamilt
 Updated by:   adrian
 Status:       patch

There is an IF function defined in the database.pgsql function. On what
page is this happening, as what might be happening is that the type
isn't being picked up correctly. 

It's defined as IF(anyelement, anyelement, text) returns anyelement.
IIRC. What I have seen happen is that it wants the text field to return
integer, or vice versa.


Previous comments:

May 24, 2005 - 06:32 : cchamilt

Postgresql function "if" is defined to return a boolean value, yet forum
requests an integer - last_comment_uid.

user error:
query: SELECT n.nid, l.last_comment_timestamp, IF(l.last_comment_uid,
cu.name, l.last_comment_name) as last_comment_name, l.last_comment_uid
FROM node n, node_comment_statistics l /*! USE INDEX
(node_comment_timestamp) */, users cu, term_node r WHERE  n.nid = r.nid
AND r.tid = 1 AND n.status = 1 AND n.type = 'forum' AND
l.last_comment_uid = cu.uid AND n.nid = l.nid ORDER BY
l.last_comment_timestamp DESC LIMIT 1 OFFSET 0 in
/var/www/hosts/www.ambigc.com/htdocs/includes/database.pgsql.inc on
line 62.

warning: pg_query() [function.pg-query]: Query failed: ERROR:  function
if(integer, character varying, character varying) does not exist
HINT:  No function matches the given name and argument types. You may
need to add explicit type casts. in
/var/www/hosts/www.ambigc.com/htdocs/includes/database.pgsql.inc on
line 45.


May 25, 2005 - 00:07 : patrickslee

Attachment: http://drupal.org/files/issues/forum.module_3.patch (2.69 KB)

I have also encountered this bug and made a possible patch by replacing
IF statements to CASE.
A patch file is attached.

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