NDB_DESC(1) MySQL Database System NDB_DESC(1)
NAME
ndb_desc - describe NDB tables
SYNOPSIS
ndb_desc options
DESCRIPTION
ndb_desc provides a detailed description of one or more NDB tables.
Usage:
ndb_desc -c connect_string tbl_name -d db_name
Sample Output:
MySQL table creation and population statements:
USE test;
CREATE TABLE fish (
id INT(11) NOT NULL AUTO_INCREMENT,
name VARCHAR(20),
PRIMARY KEY pk (id),
UNIQUE KEY uk (name)
) ENGINE=NDBCLUSTER;
INSERT INTO fish VALUES
(’’,’guppy’), (’’,’tuna’), (’’,’shark’),
(’’,’manta ray’), (’’,’grouper’), (’’,’puffer’);
Output from ndb_desc:
shell> ./ndb_desc -c localhost fish -d test -p
-- fish --
Version: 16777221
Fragment type: 5
K Value: 6
Min load factor: 78
Max load factor: 80
Temporary table: no
Number of attributes: 2
Number of primary keys: 1
Length of frm data: 268
Row Checksum: 1
Row GCI: 1
TableStatus: Retrieved
-- Attributes --
id Int PRIMARY KEY DISTRIBUTION KEY AT=FIXED ST=MEMORY
name Varchar(20;latin1_swedish_ci) NULL AT=SHORT_VAR ST=MEMORY
-- Indexes --
PRIMARY KEY(id) - UniqueHashIndex
uk(name) - OrderedIndex
PRIMARY(id) - OrderedIndex
uk$unique(name) - UniqueHashIndex
-- Per partition info --
Partition Row count Commit count Frag fixed memory Frag varsized memory
2 2 2 65536 327680
1 2 2 65536 327680
3 2 2 65536 327680
NDBT_ProgramExit: 0 - OK
Additional Options:
· --extra-partition-info, -p
Prints additional information about the table’s partitions.
· Information about multiple tables can be obtained in a single
invocation of ndb_desc by using their names, separated by spaces.
All of the tables must be in the same database.
COPYRIGHT
Copyright 2007-2008 MySQL AB
This documentation is free software; you can redistribute it and/or
modify it 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
MySQL AB (http://www.mysql.com/).
MySQL 5.0 02/29/2008 NDB_DESC(1)
