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
ndb_select_count [-cconnection_string] -ddb_nametbl_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 18.4.27, “Options Common to NDB Cluster Programs — Options Common to NDB Cluster Programs”.
Table 18.97 This table describes command-line options for the ndb_select_count program
| Format | Description | Added or Removed |
|---|---|---|
|
Name of the database in which the table is found | All MySQL 5.6 based releases |
|
Degree of parallelism | All MySQL 5.6 based releases |
|
Lock type | All MySQL 5.6 based 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.
shell> ./ndb_select_count -c localhost -d ctest1 fish dogs
6 records in table fish
4 records in table dogs
NDBT_ProgramExit: 0 - OK