"Fossies" - the Fresh Open Source Software Archive

Member "refman-8.0-en.man-gpl/ndb_drop_index.1" (6 Dec 2022, 14347 Bytes) of package /linux/misc/mysql-refman/mysql-refman-8.0-en.man-gpl.tar.gz:

Caution: As a special service "Fossies" has tried to format the requested manual source page into HTML format but links to other man pages may be missing or even erroneous. Alternatively you can here view or download the uninterpreted manual source code. A member file download can also be achieved by clicking within a package contents listing on the according byte size field.




ndb_drop_index − drop index from an NDB table


ndb_drop_index options


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 connection_string table_name index −d db_name

The statement shown above drops the index named index from the table in the database.

Options that can be used with ndb_drop_index are shown in the following table. Additional descriptions follow the table.

Table 23.32. Command−line options used with the program ndb_drop_index


Directory containing character sets.


Number of times to retry connection before giving up.


Number of seconds to wait between attempts to contact management server.


Same as −−ndb−connectstring.


Write core file on error; used in debugging.

−−database, −d

Name of the database in which the table resides.


Read given file after global files are read.


Read default options from given file only.


Also read groups with concat(group, suffix).


Display help text and exit.


Read given path from login file.


Set connect string for connecting to ndb_mgmd. Syntax: "[nodeid=id;][host=]hostname[:port]". Overrides entries in NDB_CONNECTSTRING and my.cnf.


Same as −−ndb−connectstring.


Set node ID for this node, overriding any ID set by −−ndb−connectstring.


Enable optimizations for selection of nodes for transactions. Enabled by default; use −−skip−ndb−optimized−node−selection to disable.


Do not read default options from any option file other than login file.


Print program argument list and exit.


Display help text and exit; same as −−help.


Display version information and exit.

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:

$> ./ndb_drop_index −c localhost dogs ix −d ctest1
Dropping index dogs/idx...OK
NDBT_ProgramExit: 0 − OK
$> ./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: 5.7.36−ndb−7.5.25
Type 'help;' or '\h' for help. Type '\c' to clear the buffer.
| 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 © 1997, 2021, Oracle and/or its affiliates.

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/.


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/.


Oracle Corporation (http://dev.mysql.com/).