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ndb_select_count − print row counts for NDB tables


ndb_select_count [−c connection_string] −d db_name tbl_name[ tbl_name2[ ...]]


ndb_select_count prints the number of rows in one or more NDB tables. With a single table, the result is equivalent to that obtained by using the MySQL statement SELECT COUNT(*) FROM tbl_name. Usage

ndb_select_count [−c connection_string] −ddb_name tbl_name[, tbl_name2[, ...]]

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

Table 23.45. Command−line options used with the program ndb_select_count


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.


Read default options from given file only.


Read given file after global files are read.


Also read groups with concat(group, suffix).


Read given path from login file.


Display help text and exit.


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.


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


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


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.

You can obtain row counts from multiple tables in the same database by listing the table names separated by spaces when invoking this command, as shown under Sample Output. Sample Output

$> ./ndb_select_count −c localhost −d ctest1 fish dogs
6 records in table fish
4 records in table dogs
NDBT_ProgramExit: 0 − OK


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/).