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Posted to commits@calcite.apache.org by GitBox <gi...@apache.org> on 2019/10/10 09:26:56 UTC

[GitHub] [calcite] jinxing64 opened a new pull request #1493: [CALCITE-3396] Materialization matching succeeds when query and view …

jinxing64 opened a new pull request #1493: [CALCITE-3396] Materialization matching succeeds when query and view …
URL: https://github.com/apache/calcite/pull/1493
 
 
   …are both of UNION but have different 'all' property (Jin Xing)
   
   ```
   Materialized-View:
   select * from emps where empid < 300
   union
   select * from emps where empid > 200
   
   Query:
   select * from emps where empid < 300
   union all
   select * from emps where empid > 200
   ```
   Above MV and Query have different 'all' property in UNION but they succeed matching now. 
   This PR proposes a check in `UnionToUnionUnifyRule`

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