Zhen Chen created CALCITE-7357:
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Summary: Introduce the implementation of rex operator IS DISTINCT
FROM
Key: CALCITE-7357
URL: https://issues.apache.org/jira/browse/CALCITE-7357
Project: Calcite
Issue Type: New Feature
Components: core
Reporter: Zhen Chen
Assignee: Zhen Chen
Fix For: 1.42.0
Because testing the new disassociate statement involves executing `IS DISTINCT
FROM` in SQL, the current `IS DISTINCT FROM` will be rewritten as `(x IS NOT
NULL OR y IS NOT NULL) AND (x = y) IS NOT TRUE`, so the actual execution
implementation is not needed. This presents a good opportunity to complete this
implementation.
When I test join.iq using the CALCITE-7315 PR, I get the following error.
Suppressed: java.lang.RuntimeException: cannot translate call IS DISTINCT
FROM($t1, $t3)
> at
> org.apache.calcite.adapter.enumerable.RexToLixTranslator.visitCall(RexToLixTranslator.java:1481)
> at
> org.apache.calcite.adapter.enumerable.RexToLixTranslator.visitCall(RexToLixTranslator.java:110)
> at org.apache.calcite.rex.RexCall.accept(RexCall.java:208)
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