MySQL 8.0 Release Notes
MySQL 8.0 Source Code Documentation
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[, ...]]The following table includes options that are specific to the NDB Cluster native backup restoration program ndb_select_count. Additional descriptions follow the table. For options common to most NDB Cluster programs (including ndb_select_count), see Section 22.4.31, “Options Common to NDB Cluster Programs — Options Common to NDB Cluster Programs”.
Table 22.354 Command-line options for the ndb_select_count program
| Format | Description | Added, Deprecated, or Removed |
|---|---|---|
|
Name of the database in which the table is found | All NDB 8.0 releases |
|
Degree of parallelism | All NDB 8.0 releases |
|
Lock type | All NDB 8.0 releases |
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
shell> ./ndb_select_count -c localhost -d ctest1 fish dogs
6 records in table fish
4 records in table dogs
NDBT_ProgramExit: 0 - OK