COUNT SINGLE TABLE

Description

The COUNT SINGLE TABLE syntax is used to query the number of single tables for specified database.

Syntax

CountSingleTable::=
  'COUNT' 'SINGLE' 'TABLE' ('FROM' databaseName)?
  
databaseName ::=
  identifier

Supplement

• When databaseName is not specified, the default is the currently used DATABASE. If DATABASE is not used, No database selected will be prompted.

Return Value Description

Example

• Query the number of single tables for specified database.

COUNT SINGLE TABLE FROM sharding_db;

mysql> COUNT SINGLE TABLE FROM sharding_db;
+-----------+-------------+-------+
| rule_name | database    | count |
+-----------+-------------+-------+
| single    | sharding_db | 2     |
+-----------+-------------+-------+
1 row in set (0.02 sec)

Reserved word

COUNT, SINGLE, TABLE, FROM

Related links

• Reserved word