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Posted to reviews@iotdb.apache.org by GitBox <gi...@apache.org> on 2020/01/09 05:17:49 UTC
[GitHub] [incubator-iotdb] Alima777 opened a new pull request #722: Change to groupByDevice execution logic: processing filter by device …
Alima777 opened a new pull request #722: Change to groupByDevice execution logic: processing filter by device …
URL: https://github.com/apache/incubator-iotdb/pull/722
e.g. "SELECT * FROM root.vehicle.d1, root.vehicle.d2 WHERE s0 <= 10 GROUP BY DEVICE"
Execution was like
"SELECT * FROM root.vehicle.d1 WHERE d1.s0<= 10 OR d2.s0 <= 10",
"SELECT * FROM root.vehicle.d2 WHERE d1.s0<= 10 OR d2.s0 <= 10" to get result before.
Now processing filter seperately by device:
"SELECT * FROM root.vehicle.d1 WHERE d1.s0<= 10",
"SELECT * FROM root.vehicle.d2 WHERE d2.s0<= 10".
Leave the concat prefix step to `PhysicalGenerator.transform()`
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[GitHub] [incubator-iotdb] qiaojialin merged pull request #722: Change to groupByDevice execution logic: processing filter by device …
Posted by GitBox <gi...@apache.org>.
qiaojialin merged pull request #722: Change to groupByDevice execution logic: processing filter by device …
URL: https://github.com/apache/incubator-iotdb/pull/722
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