myisam_ftdump(1) [linux man page]
MYISAM_FTDUMP(1) 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 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
Copyright (C) 1997, 2014, Oracle and/or its affiliates. All rights reserved. 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 02110-1301 USA or see http://www.gnu.org/licenses/. 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/). MySQL 5.5 01/30/2014 MYISAM_FTDUMP(1)
Check Out this Related Man Page
NDB_DROP_INDEX(1) MySQL Database System NDB_DROP_INDEX(1) NAME
ndb_drop_index - drop index from an NDB table SYNOPSIS
ndb_drop_index options DESCRIPTION
ndb_drop_index drops the specified index from an NDB table. It is recommended that you use this utility only as an example for writing NDB API applications--see the Warning later in this section for details. Usage ndb_drop_index -c connect_string table_name index -d db_name The statement shown above drops the index named index from the table in the database. The following table includes options that are specific to ndb_drop_index. Additional descriptions follow the table. For options common to most MySQL Cluster programs (including ndb_drop_index), see Options Common to MySQL Cluster Programs(1). Table 17.18. ndb_drop_index Options and Variables: MySQL Cluster NDB 7.2 +--------------------------+-----------------------------------+-------------------------------------+ |Format | Description | Added / Removed | +--------------------------+-----------------------------------+-------------------------------------+ | | Name of the database in which the | | | --database=dbname, | table is found | All MySQL 5.5 based releases | | | | | | -d | | | +--------------------------+-----------------------------------+-------------------------------------+ Warning Operations performed on Cluster table indexes using the NDB API are not visible to MySQL and make the table unusable by a MySQL server. If you use this program to drop an index, then try to access the table from an SQL node, an error results, as shown here: shell> ./ndb_drop_index -c localhost dogs ix -d ctest1 Dropping index dogs/idx...OK NDBT_ProgramExit: 0 - OK shell> ./mysql -u jon -p ctest1 Enter password: ******* Reading table information for completion of table and column names You can turn off this feature to get a quicker startup with -A Welcome to the MySQL monitor. Commands end with ; or g. Your MySQL connection id is 7 to server version: 5.5.35-ndb-7.2.15 Type 'help;' or 'h' for help. Type 'c' to clear the buffer. mysql> SHOW TABLES; +------------------+ | Tables_in_ctest1 | +------------------+ | a | | bt1 | | bt2 | | dogs | | employees | | fish | +------------------+ 6 rows in set (0.00 sec) mysql> SELECT * FROM dogs; ERROR 1296 (HY000): Got error 4243 'Index not found' from NDBCLUSTER In such a case, your only option for making the table available to MySQL again is to drop the table and re-create it. You can use either the SQL statementDROP TABLE or the ndb_drop_table utility (see ndb_drop_table(1)) to drop the table. COPYRIGHT
Copyright (C) 1997, 2014, Oracle and/or its affiliates. All rights reserved. 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 02110-1301 USA or see http://www.gnu.org/licenses/. 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/). MySQL 5.5 01/30/2014 NDB_DROP_INDEX(1)