ndb_drop_index

Langue: en

Version: 11/16/2009 (ubuntu - 24/10/10)

Section: 1 (Commandes utilisateur)

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.

Additional Options: None that are specific to this application.


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: 5.1.12-beta-20060817
 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 2007-2008 MySQL AB, 2009 Sun Microsystems, Inc.

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

Sun Microsystems, Inc. (http://www.mysql.com/).