Konstantin Orlov created IGNITE-21533:
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             Summary: Sql. Use actual order of key columns to built key only row
                 Key: IGNITE-21533
                 URL: https://issues.apache.org/jira/browse/IGNITE-21533
             Project: Ignite
          Issue Type: Improvement
          Components: sql
            Reporter: Konstantin Orlov


Another ticket to ease migration from IEP 54 format.

At the moment, sql-related table descriptor lose information about order of 
columns in primary key. This order is crucial to build key for look up or 
delete operations.

Under this ticket we need to change implementation in the way, so key only row 
will be built according to order of the primary key, not the order provided by 
{{SchemaDescriptor#keyColumns}}



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