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SHOW SINGLE TABLE

Description

The SHOW SINGLE TABLE syntax is used to query single tables for specified database.

Syntax

ShowSingleTable::=
  'SHOW' 'SINGLE' ('TABLES' ('LIKES' likeLiteral)?|'TABLE' tableName) ('FROM' databaseName)?

tableName ::=
  identifier

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

Column Description
table_name Single table name
storage_unit_name The storage unit name where the single table is located

Example

  • Query specified single table for specified database.
SHOW SINGLE TABLE t_user FROM sharding_db;

mysql> SHOW SINGLE TABLE t_user FROM sharding_db;
+------------+-------------------+
| table_name | storage_unit_name |
+------------+-------------------+
| t_user     | ds_0              |
+------------+-------------------+
1 row in set (0.00 sec)
  • Query specified single table for current database.
SHOW SINGLE TABLE t_user;

mysql> SHOW SINGLE TABLE t_user;
+------------+-------------------+
| table_name | storage_unit_name |
+------------+-------------------+
| t_user     | ds_0              |
+------------+-------------------+
1 row in set (0.00 sec)
  • Query single tables for specified database.
SHOW SINGLE TABLES FROM sharding_db;

mysql> SHOW SINGLE TABLES FROM sharding_db;
+------------+-------------------+
| table_name | storage_unit_name |
+------------+-------------------+
| t_user     | ds_0              |
+------------+-------------------+
1 row in set (0.00 sec)
  • Query single tables for current database.
SHOW SINGLE TABLES;

mysql> SHOW SINGLE TABLES;
+------------+-------------------+
| table_name | storage_unit_name |
+------------+-------------------+
| t_user     | ds_0              |
+------------+-------------------+
1 row in set (0.00 sec)
  • Query the single tables whose table name end with order_5 for the specified logic database.
SHOW SINGLE TABLES LIKE '%order_5' FROM sharding_db;

mysql> SHOW SINGLE TABLES LIKE '%order_5' FROM sharding_db;
+------------+-------------------+
| table_name | storage_unit_name |
+------------+-------------------+
| t_order_5  | ds_1              |
+------------+-------------------+
1 row in set (0.11 sec)
  • Query the single tables whose table name end with order_5 for the current logic database
SHOW SINGLE TABLES LIKE '%order_5';

mysql> SHOW SINGLE TABLES LIKE '%order_5';
+------------+-------------------+
| table_name | storage_unit_name |
+------------+-------------------+
| t_order_5  | ds_1              |
+------------+-------------------+
1 row in set (0.11 sec)

Reserved word

SHOW, SINGLE, TABLE, TABLES, LIKE, FROM