lincoln.lee created CALCITE-2023:
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Summary: Add SqlKind.AS to policy map of
org.apache.calcite.plan.Strong due to NPE when apply FilterJoinRule
Key: CALCITE-2023
URL: https://issues.apache.org/jira/browse/CALCITE-2023
Project: Calcite
Issue Type: Bug
Components: core
Reporter: lincoln.lee
Assignee: Julian Hyde
Priority: Minor
Encounter a NPE when apply FilterJoinRule in a [use
case|https://issues.apache.org/jira/browse/FLINK-7942] written in flink table
api.
A simple way to fix this is to change the calcite class
{code}org.apache.calcite.plan.Strong{code} add an additional entry to the
EnumMap in createPolicyMap method: {code}map.put(SqlKind.AS,
Policy.AS_IS);{code}
But I'm not sure if it is the right way, or there's other root cause?
@julianhyde could you offer some advice?
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