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sharding-sphere-examples's Introduction

Quick Run The Demo

  1. Run mysql in docker
docker-compose -f mysql.yaml up -d
  1. Init database, run sql scripts:
    1. user.sql
    2. user_extend.sql
  2. Run ShardingSphereDataMigrateApplication
    1. run it directly to generate a migration script for the data source ds1
    2. change application.yaml, sharding-config: sharding-ds2.yaml, and data source url to: ds2, run again
  3. Run data migration sql scripts sql-scripts
  4. Run ShardingSphereExamplesApplication
  5. Try requests api.http

TODO

When cross-library join, the whole table will be queried, and then join in memory

  1. KernelProcessor#generateExecutionContext
  2. FilterableTableScanExecutor#execute
    1. watches: queryResult, you will find that the whole table is queried, not by id.
  3. ExecutorEngine#execute

References

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