Bug 51607

Summary: DBDPrepareSQL ( ap_dbd_prepare ) does not work correctly with SQL Statements which has % characters in functions like DATE_FORMAT.
Product: Apache httpd-2 Reporter: Firat Sarlar <sfirat>
Component: mod_dbdAssignee: Apache HTTPD Bugs Mailing List <bugs>
Severity: normal Keywords: MassUpdate
Priority: P2    
Version: 2.3.12-beta   
Target Milestone: ---   
Hardware: PC   
OS: Linux   

Description Firat Sarlar 2011-08-03 16:18:31 UTC
An SQL statemnet like 
"SELECT ID, DATE_FORMAT(  post_date, '%d.%M.%Y %W %H:%i ') AS p_d , post_title, post_content FROM posts;"

With mysql driver.

is not correctly prepared.

This may result of escaping % chars.

Also this bug may be releated to apr_dbd_mysql_driver.
Comment 1 Daniel Gruno 2012-05-01 05:36:46 UTC
From what I can tell, this is simply a matter of internal mechanics using the % sign as an indicator of a variable (%s being most noteworthy). Have you tried using %% instead to denote a percentage sign? Please try so, and if successful, do reply back, so I can perhaps put a note about it in the docs, so we can avoid future bug reports like this.
Comment 2 Firat Sarlar 2012-05-01 14:39:44 UTC
I can not try double % for now - I don't have test env. anymore- but I'm quite sure I have tried many things to avoid errors .
Comment 3 William A. Rowe Jr. 2018-11-07 21:08:52 UTC
Please help us to refine our list of open and current defects; this is a mass update of old and inactive Bugzilla reports which reflect user error, already resolved defects, and still-existing defects in httpd.

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