Re: FULL Text Limitation issue!
Thank you very much Paul and Keith for your response , I guess I will have to use LIKE clause in SQL statement for searching the records then. Imran - Original Message - From: Keith C. Ivey [EMAIL PROTECTED] To: [EMAIL PROTECTED] Cc: Imran Aziz [EMAIL PROTECTED] Sent: Tuesday, September 23, 2003 5:36 PM Subject: Re: FULL Text Limitation issue! On 23 Sep 2003 at 17:07, Imran Aziz wrote: I have come to know that mySQL FULL TEXT search has the limitation of the search phrase to be more then 3 charators. In order to alter the default behavior one has to alter the variable ft_min_word_len. I am running MySQL 3.23.54 and the FULL Text search works fine , but I am unable to alter the variable ft_min_word_len either using the my.cnf file or by altering the variable value on mysql startup. The ft_min_word_len variable wasn't introduced until MySQL 4. See http://www.mysql.com/doc/en/Fulltext_Fine-tuning.html -- Keith C. Ivey [EMAIL PROTECTED] Tobacco Documents Online http://tobaccodocuments.org -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
FULL Text Limitation issue!
Hello All, I have come to know that mySQL FULL TEXT search has the limitation of the search phrase to be more then 3 charators. In order to alter the default behavior one has to alter the variable ft_min_word_len. I am running MySQL 3.23.54 and the FULL Text search works fine , but I am unable to alter the variable ft_min_word_len either using the my.cnf file or by altering the variable value on mysql startup. In addition when I show all variables used by mySQL the variables with ft_ prefix do not show up. Is this FULL Text alteration limited to later verison of mySQL Server or am I doing something wrong , can anyone please help me with this and let me know how to alter the limit of the input phrase for FULL TEXT search. Imran.
Re: FULL Text Limitation issue!
On 23 Sep 2003 at 17:07, Imran Aziz wrote: I have come to know that mySQL FULL TEXT search has the limitation of the search phrase to be more then 3 charators. In order to alter the default behavior one has to alter the variable ft_min_word_len. I am running MySQL 3.23.54 and the FULL Text search works fine , but I am unable to alter the variable ft_min_word_len either using the my.cnf file or by altering the variable value on mysql startup. The ft_min_word_len variable wasn't introduced until MySQL 4. See http://www.mysql.com/doc/en/Fulltext_Fine-tuning.html -- Keith C. Ivey [EMAIL PROTECTED] Tobacco Documents Online http://tobaccodocuments.org -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Re: FULL Text Limitation issue!
At 17:07 +0100 9/23/03, Imran Aziz wrote: Hello All, I have come to know that mySQL FULL TEXT search has the limitation of the search phrase to be more then 3 charators. In order to alter the default behavior one has to alter the variable ft_min_word_len. I am running MySQL 3.23.54 and the FULL Text search works fine , but I am unable to alter the variable ft_min_word_len either using the my.cnf file or by altering the variable value on mysql startup. In addition when I show all variables used by mySQL the variables with ft_ prefix do not show up. Is this FULL Text alteration limited to later verison of mySQL Server or am I doing something wrong , can anyone please help me with this and let me know how to alter the limit of the input phrase for FULL TEXT search. Imran. Yes, this variable can be set as of MySQL 4, but not in 3.23. See: http://www.mysql.com/doc/en/Fulltext_Fine-tuning.html -- Paul DuBois, Senior Technical Writer Madison, Wisconsin, USA MySQL AB, www.mysql.com Are you MySQL certified? http://www.mysql.com/certification/ -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Re: Full text limitation?
Hi! SELECT count(a.rsori) pippo FROM ecoras a, ecotxt b WHERE MATCH ( b.rstxt ) AGAINST ( '-linux' IN BOOLEAN MODE ) AND a.rsori = b.rsori AND a.rscod = b.rscod; If I execute a query like in the example, I don't obtain all rows where this word is not present. Instead if I use a leading plus sign I obtain the right resultset. I do not think it is a bug, maybe it is a limitation in full-text search and I would know how can I obtain a valid resultset. It's not a bug, it's how fulltext search was designed to work. `-word' works as a filter, removing rows from result set. `+word' and `word' add rows to result set. Naturally, if there is neither `+word' nor `word', the result set is empty, and `-word' is useless. Regards, Sergei -- MySQL Development Team __ ___ ___ __ / |/ /_ __/ __/ __ \/ / Sergei Golubchik [EMAIL PROTECTED] / /|_/ / // /\ \/ /_/ / /__ MySQL AB, http://www.mysql.com/ /_/ /_/\_, /___/\___\_\___/ Osnabrueck, Germany ___/ - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
Re: Full text limitation?
- Original Message - From: Paul DuBois [EMAIL PROTECTED] To: Walter Procopio [EMAIL PROTECTED]; [EMAIL PROTECTED] Sent: Wednesday, January 08, 2003 5:44 PM Subject: Re: Full text limitation? At 14:03 +0100 1/8/03, Walter Procopio wrote: Hi, I have installed mysql max 4.0.7 gamma on a Suse (ver. 8.0 professional) linux server. I have tried many full text queries and I had only a problem with a query like this: SELECT count(a.rsori) pippo FROM ecoras a, ecotxt b WHERE MATCH ( b.rstxt ) AGAINST ( '-linux' IN BOOLEAN MODE ) AND a.rsori = b.rsori AND a.rscod = b.rscod; If I use only the minus operator I have not a valid resultset. Isn't that the same as asking for records that don't match anything? I think I was not exaustive, in mysql handbook I can read: +A leading plus sign indicates that this word must be present in every row returned. - A leading minus sign indicates that this word must not be present in any row returned. By default (when neither plus nor minus is specified) the word is optional, but the rows that contain it will be rated higher. This mimicks the behaviour of MATCH() ... AGAINST() without the IN BOOLEAN MODE modifier. If I execute a query like in the example, I don't obtain all rows where this word is not present. Instead if I use a leading plus sign I obtain the right resultset. I do not think it is a bug, maybe it is a limitation in full-text search and I would know how can I obtain a valid resultset. If I use the minus operator with another one I have a reultset. For example: SELECT count(a.rsori) pippo FROM ecoras a, ecotxt b WHERE MATCH ( b.rstxt ) AGAINST ( '+linux -windows' IN BOOLEAN MODE ) AND a.rsori = b.rsori AND a.rscod = b.rscod; Is it a full text limit? Thanks Walter Procopio - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
Full text limitation?
Hi, I have installed mysql max 4.0.7 gamma on a Suse (ver. 8.0 professional) linux server. I have tried many full text queries and I had only a problem with a query like this: SELECT count(a.rsori) pippo FROM ecoras a, ecotxt b WHERE MATCH ( b.rstxt ) AGAINST ( '-linux' IN BOOLEAN MODE ) AND a.rsori = b.rsori AND a.rscod = b.rscod; If I use only the minus operator I have not a valid resultset. If I use the minus operator with another one I have a reultset. For example: SELECT count(a.rsori) pippo FROM ecoras a, ecotxt b WHERE MATCH ( b.rstxt ) AGAINST ( '+linux -windows' IN BOOLEAN MODE ) AND a.rsori = b.rsori AND a.rscod = b.rscod; Is it a full text limit? Thanks Walter Procopio - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
Re: Full text limitation?
At 14:03 +0100 1/8/03, Walter Procopio wrote: Hi, I have installed mysql max 4.0.7 gamma on a Suse (ver. 8.0 professional) linux server. I have tried many full text queries and I had only a problem with a query like this: SELECT count(a.rsori) pippo FROM ecoras a, ecotxt b WHERE MATCH ( b.rstxt ) AGAINST ( '-linux' IN BOOLEAN MODE ) AND a.rsori = b.rsori AND a.rscod = b.rscod; If I use only the minus operator I have not a valid resultset. Isn't that the same as asking for records that don't match anything? If I use the minus operator with another one I have a reultset. For example: SELECT count(a.rsori) pippo FROM ecoras a, ecotxt b WHERE MATCH ( b.rstxt ) AGAINST ( '+linux -windows' IN BOOLEAN MODE ) AND a.rsori = b.rsori AND a.rscod = b.rscod; Is it a full text limit? Thanks Walter Procopio - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
