myisam_ftdump
(1)
Name
myisam_ftdump - text index information
Synopsis
myisam_ftdump [options] tbl_name index_num
Description
MySQL Database System MYISAM_FTDUMP(1)
NAME
myisam_ftdump - display full-text index information
SYNOPSIS
myisam_ftdump [options] tbl_name index_num
DESCRIPTION
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 mytexttable that has the following definition:
CREATE TABLE mytexttable
(
id INT NOT NULL,
txt TEXT NOT NULL,
PRIMARY KEY (id),
FULLTEXT (txt)
) ENGINE=MyISAM;
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
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MySQL Database System MYISAM_FTDUMP(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:
o --help, -h -?
Display a help message and exit.
o --count, -c
Calculate per-word statistics (counts and global
weights).
o --dump, -d
Dump the index, including data offsets and word weights.
o --length, -l
Report the length distribution.
o --stats, -s
Report global index statistics. This is the default
operation if no other operation is specified.
o --verbose, -v
Verbose mode. Print more output about what the program
does.
COPYRIGHT
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find any errors, please report them to us in writing.
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MySQL Database System MYISAM_FTDUMP(1)
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MySQL Database System MYISAM_FTDUMP(1)
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ATTRIBUTES
See attributes(5) for descriptions of the following
attributes:
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MySQL Database System MYISAM_FTDUMP(1)
+---------------+-------------------+
|ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+---------------+-------------------+
|Availability | database/mysql-55 |
+---------------+-------------------+
|Stability | Uncommitted |
+---------------+-------------------+
SEE ALSO
For more information, please refer to the MySQL Reference
Manual, which may already be installed locally and which is
also available online at http://dev.mysql.com/doc/.
AUTHOR
Oracle Corporation (http://dev.mysql.com/).
NOTES
This software was built from source available at
https://java.net/projects/solaris-userland. The original
community source was downloaded from
http://downloads.mysql.com/archives/mysql-5.5/mysql-5.5.31.tar.gz
Further information about this software can be found on the
open source community website at http://dev.mysql.com/.
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