KomachiSion commented on issue #2826: Ability to define behaviour when sharding column is not present in the SQL URL: https://github.com/apache/incubator-shardingsphere/issues/2826#issuecomment-521911936 > I have the same request.I modified the source code. > remove "null != HINT_MANAGER_HOLDER.get()" in HintManagerHolder. > Specify sharding fields based on table configuration at system startup。I have about 800 tables. > Don't know if there's a better way? I don't know your business logic and situation, so I have no suggest for you. And you said you have 800 tables, is it means you have 800 tables to shard? I don't think it is necessary for all tables to do sharding. For most of users, they want to shard tables by one or a bit of columns, and query by this sharding columns so that application and database can scan less rows. If you have many situation to query without sharding column, maybe it means you should to update your application structure rather than ShardingSphere.
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