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From "Juhwan Kim (Jira)" <j...@apache.org>
Subject [jira] [Created] (CALCITE-3296) Decorrelator gives empty result after decorrelating sort rel with null offset and fetch
Date Mon, 26 Aug 2019 18:40:00 GMT
Juhwan Kim created CALCITE-3296:
-----------------------------------

             Summary: Decorrelator gives empty result after decorrelating sort rel with null
offset and fetch
                 Key: CALCITE-3296
                 URL: https://issues.apache.org/jira/browse/CALCITE-3296
             Project: Calcite
          Issue Type: Bug
            Reporter: Juhwan Kim
            Assignee: Juhwan Kim


It seems like I introduced a bug with the recent decorrelator patch. Sort rel with null offset
and fetch would end up becoming an empty value since decorrelator would call sortLimit builder
with 0 limit and 0 offset. It should pass negative values to builder when values are null.

https://github.com/apache/calcite/blob/e863294ccfbed9dd520c999f75ed0bbe03f9fb1d/core/src/main/java/org/apache/calcite/sql2rel/RelDecorrelator.java#L423



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