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This article introduces the relevant knowledge of "how to configure Sharding JDBC subtables". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

Sub-table configuration

Since the single database is divided into tables, only one data source can be configured.

# configure data source spring.shardingsphere.datasource.names=test0#test0spring.shardingsphere.datasource.test0.type=com.zaxxer.hikari.HikariDataSourcespring.shardingsphere.datasource.test0.driver-class-name=com.mysql.cj.jdbc.Driverspring.shardingsphere.datasource.test0.jdbcUrl=jdbc:mysql://127.0.0.1:3306/test0spring.shardingsphere.datasource.test0.username=devadminspring.shardingsphere.datasource.test0.password=

Set binding table

# setting binding table spring.shardingsphere.sharding.binding-tables [0] = health_record,health_task

Set the policy of sub-table

Here the table is divided according to the parity of record_id. Divided into health_record0,health_record1 and health_task0,health_task1

# health_recordspring.shardingsphere.sharding.tables.health_record.actual-data-nodes=test0.health_record$- > {0.. 1} spring.shardingsphere.sharding.tables.health_record.table-strategy.inline.algorithm-expression=health_record$- > {record_id% 2} spring.shardingsphere.sharding.tables.health_record.table-strategy.inline.sharding-column=record_idspring.shardingsphere.sharding.tables.health_record.key-generator.column=record_idspring.shardingsphere.sharding.tables.health_record.key-generator. Type=SNOWFLAKE# health_taskspring.shardingsphere.sharding.tables.health_task.actual-data-nodes=test0.health_task$- > {0.. 1} spring.shardingsphere.sharding.tables.health_task.table-strategy.inline.algorithm-expression=health_task$- > {record_id 2} spring.shardingsphere.sharding.tables.health_task.table-strategy.inline.sharding-column=record_idspring.shardingsphere.sharding.tables.health_task.key-generator.column=task_idspring.shardingsphere.sharding.tables.health_task.key-generator.type=SNOWFLAKE

Complete configuration

Server.port=8080# print sqlspring.shardingsphere.props.sql.show=true# configuration data source spring.shardingsphere.datasource.names=test0#test0spring.shardingsphere.datasource.test0.type=com.zaxxer.hikari.HikariDataSourcespring.shardingsphere.datasource.test0.driver-class-name=com.mysql.cj.jdbc.Driverspring.shardingsphere.datasource.test0.jdbcUrl=jdbc:mysql://127.0.0.1:3306/test0spring.shardingsphere.datasource.test0.username=devadminspring.shardingsphere.datasource.test0.password=# settings binding table spring.shardingsphere.sharding.binding-tables [0] = health_record Health_task# health_recordspring.shardingsphere.sharding.tables.health_record.actual-data-nodes=test0.health_record$- > {0.. 1} spring.shardingsphere.sharding.tables.health_record.table-strategy.inline.algorithm-expression=health_record$- > {record_id 2} spring.shardingsphere.sharding.tables.health_record.table-strategy.inline.sharding-column=record_idspring.shardingsphere.sharding.tables.health_record.key-generator.column=record_idspring.shardingsphere.sharding.tables.health_record.key -generator.type=SNOWFLAKE# health_taskspring.shardingsphere.sharding.tables.health_task.actual-data-nodes=test0.health_task$- > {0.. 1} spring.shardingsphere.sharding.tables.health_task.table-strategy.inline.algorithm-expression=health_task$- > {record_id% 2} spring.shardingsphere.sharding.tables.health_task.table-strategy.inline.sharding-column=record_idspring.shardingsphere.sharding.tables.health_task.key-generator.column=task_idspring.shardingsphere.sharding.tables.health_task.key-generator.type=SNOWFLAKE database is as follows

The health_level data are as follows

The user data are as follows

Health_record0,health_record1

In health_record0, record_id is even and health_record1 is odd.

Health_task0,health_task1

In health_task0, record_id is even and health_task1 is odd.

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