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NAME | SYNOPSIS | DESCRIPTION | COPYRIGHT | SEE ALSO | AUTHOR | COLOPHON |
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MYISAM_FTDUMP(1) MariaDB Database System MYISAM_FTDUMP(1)
myisam_ftdump - display full-text index information
myisam_ftdump [options] tbl_name index_num
myisam_ftdump displays information about FULLTEXT indexes in
MyISAM tables. It reads the MyISAM index file directly, so it
must be run on the server host where the table is located. Before
using myisam_ftdump, be sure to issue a FLUSH TABLES statement
first if the server is running.
myisam_ftdump scans and dumps the entire index, which is not
particularly fast. On the other hand, the distribution of words
changes infrequently, so it need not be run often.
Invoke myisam_ftdump like this:
shell> myisam_ftdump [options] tbl_name index_num
The tbl_name argument should be the name of a MyISAM table. You
can also specify a table by naming its index file (the file with
the .MYI suffix). If you do not invoke myisam_ftdump in the
directory where the table files are located, the table or index
file name must be preceded by the path name to the table´s
database directory. Index numbers begin with 0.
Example: Suppose that the test database contains a table named
mytexttablel that has the following definition:
CREATE TABLE mytexttable
(
id INT NOT NULL,
txt TEXT NOT NULL,
PRIMARY KEY (id),
FULLTEXT (txt)
);
The index on id is index 0 and the FULLTEXT index on txt is index
1. If your working directory is the test database directory,
invoke myisam_ftdump as follows:
shell> myisam_ftdump mytexttable 1
If the path name to the test database directory is
/usr/local/mysql/data/test, you can also specify the table name
argument using that path name. This is useful if you do not
invoke myisam_ftdump in the database directory:
shell> myisam_ftdump /usr/local/mysql/data/test/mytexttable 1
You can use myisam_ftdump to generate a list of index entries in
order of frequency of occurrence like this:
shell> myisam_ftdump -c mytexttable 1 | sort -r
myisam_ftdump supports the following options:
• --help, -h -?
Display a help message and exit.
• --count, -c
Calculate per-word statistics (counts and global weights).
• --dump, -d
Dump the index, including data offsets and word weights.
• --length, -l
Report the length distribution.
• --stats, -s
Report global index statistics. This is the default operation
if no other operation is specified.
• --verbose, -v
Verbose mode. Print more output about what the program does.
Copyright 2007-2008 MySQL AB, 2008-2010 Sun Microsystems, Inc.,
2010-2020 MariaDB Foundation
This documentation is free software; you can redistribute it
and/or modify it only under the terms of the GNU General Public
License as published by the Free Software Foundation; version 2
of the License.
This documentation is distributed in the hope that it will be
useful, but WITHOUT ANY WARRANTY; without even the implied
warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with the program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1335 USA or see http://www.gnu.org/licenses/.
For more information, please refer to the MariaDB Knowledge Base,
available online at https://mariadb.com/kb/
MariaDB Foundation (http://www.mariadb.org/).
This page is part of the MariaDB (MariaDB database server)
project. Information about the project can be found at
⟨http://mariadb.org/⟩. If you have a bug report for this manual
page, see ⟨https://mariadb.com/kb/en/mariadb/reporting-bugs/⟩.
This page was obtained from the project's upstream Git repository
⟨https://github.com/MariaDB/server⟩ on 2024-06-14. (At that
time, the date of the most recent commit that was found in the
repository was 2023-05-11.) If you discover any rendering
problems in this HTML version of the page, or you believe there
is a better or more up-to-date source for the page, or you have
corrections or improvements to the information in this COLOPHON
(which is not part of the original manual page), send a mail to
man-pages@man7.org
MariaDB 10.8 15 May 2020 MYISAM_FTDUMP(1)
Pages that refer to this page: aria_ftdump(1)
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HTML rendering created 2024-06-26 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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