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SHOW SHARDING TABLE REFERENCE RULES

Description

SHOW SHARDING TABLE REFERENCE RULES syntax is used to query sharding tables with reference relationships in the specified logical database.

Syntax

ShowShardingBindingTableRules::=
  'SHOW' 'SHARDING' 'TABLE' 'REFERENCE' 'RULES' ('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

Columns Descriptions
name Sharding table reference rule name
sharding_table_reference sharding table reference

Example

  • Query sharding table reference rules for the specified logical database
SHOW SHARDING TABLE REFERENCE RULES FROM sharding_db;

mysql> SHOW SHARDING TABLE REFERENCE RULES FROM sharding_db;
+-------+--------------------------+
| name  | sharding_table_reference |
+-------+--------------------------+
| ref_0 | t_a,t_b                  |
| ref_1 | t_c,t_d                  |
+-------+--------------------------+
2 rows in set (0.00 sec)
  • Query sharding table reference rules for the current logical database
SHOW SHARDING TABLE REFERENCE RULES;

mysql> SHOW SHARDING TABLE REFERENCE RULES;
+-------+--------------------------+
| name  | sharding_table_reference |
+-------+--------------------------+
| ref_0 | t_a,t_b                  |
| ref_1 | t_c,t_d                  |
+-------+--------------------------+
2 rows in set (0.00 sec)

Reserved word

SHOW, SHARDING, TABLE, REFERENCE, RULES, FROM