268 lines
6.2 KiB
Groff
268 lines
6.2 KiB
Groff
'\" t
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.\" Title: \fBmyisam_ftdump\fR
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.\" Author: [FIXME: author] [see http://docbook.sf.net/el/author]
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.\" Generator: DocBook XSL Stylesheets v1.77.1 <http://docbook.sf.net/>
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.\" Date: 11/04/2013
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.\" Manual: MySQL Database System
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.\" Source: MySQL 5.1
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.\" Language: English
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.\"
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.TH "\FBMYISAM_FTDUMP\FR" "1" "11/04/2013" "MySQL 5\&.1" "MySQL Database System"
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.\" -----------------------------------------------------------------
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.\" * Define some portability stuff
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.\" -----------------------------------------------------------------
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.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.\" http://bugs.debian.org/507673
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.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
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.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.ie \n(.g .ds Aq \(aq
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.el .ds Aq '
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.\" -----------------------------------------------------------------
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.\" * set default formatting
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.\" -----------------------------------------------------------------
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.\" disable hyphenation
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.nh
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.\" disable justification (adjust text to left margin only)
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.ad l
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.\" -----------------------------------------------------------------
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.\" * MAIN CONTENT STARTS HERE *
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.\" -----------------------------------------------------------------
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.\" myisam_ftdump
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.SH "NAME"
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myisam_ftdump \- display full\-text index information
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.SH "SYNOPSIS"
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.HP \w'\fBmyisam_ftdump\ [\fR\fB\fIoptions\fR\fR\fB]\ \fR\fB\fItbl_name\fR\fR\fB\ \fR\fB\fIindex_num\fR\fR\ 'u
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\fBmyisam_ftdump [\fR\fB\fIoptions\fR\fR\fB] \fR\fB\fItbl_name\fR\fR\fB \fR\fB\fIindex_num\fR\fR
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.SH "DESCRIPTION"
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.PP
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\fBmyisam_ftdump\fR
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displays information about
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FULLTEXT
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indexes in
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MyISAM
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tables\&. It reads the
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MyISAM
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index file directly, so it must be run on the server host where the table is located\&. Before using
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\fBmyisam_ftdump\fR, be sure to issue a
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FLUSH TABLES
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statement first if the server is running\&.
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.PP
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\fBmyisam_ftdump\fR
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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\&.
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.PP
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Invoke
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\fBmyisam_ftdump\fR
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like this:
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.sp
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.if n \{\
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.RS 4
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.\}
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.nf
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shell> \fBmyisam_ftdump [\fR\fB\fIoptions\fR\fR\fB] \fR\fB\fItbl_name\fR\fR\fB \fR\fB\fIindex_num\fR\fR
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.fi
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.if n \{\
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.RE
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.\}
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.PP
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The
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\fItbl_name\fR
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argument should be the name of a
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MyISAM
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table\&. You can also specify a table by naming its index file (the file with the
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\&.MYI
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suffix)\&. If you do not invoke
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\fBmyisam_ftdump\fR
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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\*(Aqs database directory\&. Index numbers begin with 0\&.
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.PP
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Example: Suppose that the
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test
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database contains a table named
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mytexttable
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that has the following definition:
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.sp
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.if n \{\
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.RS 4
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.\}
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.nf
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CREATE TABLE mytexttable
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(
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id INT NOT NULL,
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txt TEXT NOT NULL,
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PRIMARY KEY (id),
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FULLTEXT (txt)
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) ENGINE=MyISAM;
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.fi
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.if n \{\
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.RE
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.\}
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.PP
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The index on
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id
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is index 0 and the
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FULLTEXT
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index on
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txt
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is index 1\&. If your working directory is the
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test
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database directory, invoke
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\fBmyisam_ftdump\fR
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as follows:
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.sp
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.if n \{\
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.RS 4
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.\}
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.nf
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shell> \fBmyisam_ftdump mytexttable 1\fR
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.fi
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.if n \{\
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.RE
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.\}
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.PP
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If the path name to the
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test
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database directory is
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/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
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\fBmyisam_ftdump\fR
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in the database directory:
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.sp
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.if n \{\
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.RS 4
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.\}
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.nf
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shell> \fBmyisam_ftdump /usr/local/mysql/data/test/mytexttable 1\fR
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.fi
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.if n \{\
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.RE
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.\}
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.PP
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You can use
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\fBmyisam_ftdump\fR
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to generate a list of index entries in order of frequency of occurrence like this:
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.sp
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.if n \{\
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.RS 4
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.\}
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.nf
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shell> \fBmyisam_ftdump \-c mytexttable 1 | sort \-r\fR
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.fi
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.if n \{\
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.RE
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.\}
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.PP
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\fBmyisam_ftdump\fR
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supports the following options:
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.sp
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.RS 4
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.ie n \{\
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\h'-04'\(bu\h'+03'\c
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.\}
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.el \{\
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.sp -1
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.IP \(bu 2.3
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.\}
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.\" myisam_ftdump: help option
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.\" help option: myisam_ftdump
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\fB\-\-help\fR,
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\fB\-h\fR
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\fB\-?\fR
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.sp
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Display a help message and exit\&.
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.RE
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.sp
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.RS 4
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.ie n \{\
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\h'-04'\(bu\h'+03'\c
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.\}
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.el \{\
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.sp -1
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.IP \(bu 2.3
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.\}
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.\" myisam_ftdump: count option
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.\" count option: myisam_ftdump
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\fB\-\-count\fR,
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\fB\-c\fR
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.sp
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Calculate per\-word statistics (counts and global weights)\&.
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.RE
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.sp
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.RS 4
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.ie n \{\
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\h'-04'\(bu\h'+03'\c
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.\}
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.el \{\
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.sp -1
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.IP \(bu 2.3
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.\}
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.\" myisam_ftdump: dump option
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.\" dump option: myisam_ftdump
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\fB\-\-dump\fR,
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\fB\-d\fR
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.sp
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Dump the index, including data offsets and word weights\&.
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.RE
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.sp
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.RS 4
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.ie n \{\
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\h'-04'\(bu\h'+03'\c
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.\}
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.el \{\
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.sp -1
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.IP \(bu 2.3
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.\}
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.\" myisam_ftdump: length option
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.\" length option: myisam_ftdump
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\fB\-\-length\fR,
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\fB\-l\fR
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.sp
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Report the length distribution\&.
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.RE
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.sp
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.RS 4
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.ie n \{\
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\h'-04'\(bu\h'+03'\c
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.\}
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.el \{\
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.sp -1
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.IP \(bu 2.3
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.\}
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.\" myisam_ftdump: stats option
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.\" stats option: myisam_ftdump
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\fB\-\-stats\fR,
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\fB\-s\fR
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.sp
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Report global index statistics\&. This is the default operation if no other operation is specified\&.
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.RE
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.sp
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.RS 4
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.ie n \{\
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\h'-04'\(bu\h'+03'\c
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.\}
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.el \{\
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.sp -1
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.IP \(bu 2.3
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.\}
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.\" myisam_ftdump: verbose option
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.\" verbose option: myisam_ftdump
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\fB\-\-verbose\fR,
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\fB\-v\fR
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.sp
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Verbose mode\&. Print more output about what the program does\&.
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.RE
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.SH "COPYRIGHT"
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.br
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.PP
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Copyright \(co 1997, 2013, Oracle and/or its affiliates. All rights reserved.
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.PP
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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.
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.PP
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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.
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.PP
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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 02110-1301 USA or see http://www.gnu.org/licenses/.
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.sp
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.SH "SEE ALSO"
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For more information, please refer to the MySQL Reference Manual,
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which may already be installed locally and which is also available
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online at http://dev.mysql.com/doc/.
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.SH AUTHOR
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Oracle Corporation (http://dev.mysql.com/).
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