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https://issues.apache.org/jira/browse/CALCITE-6129?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mihai Budiu resolved CALCITE-6129.
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Fix Version/s: 1.37.0
Resolution: Fixed
Fixed by
https://github.com/apache/calcite/commit/3deb77cd6faf811d8a3ca27d6379bd20afb721cf
> SqlToRelConverter throws an exception when converting a NULL SqlLiteral
> -----------------------------------------------------------------------
>
> Key: CALCITE-6129
> URL: https://issues.apache.org/jira/browse/CALCITE-6129
> Project: Calcite
> Issue Type: Bug
> Components: core
> Affects Versions: 1.36.0
> Reporter: Mihai Budiu
> Priority: Minor
> Fix For: 1.37.0
>
>
> The problem is in SqlNodeToRexConverterImpl.convertLiteral. This function
> attempts to handle NULL literals differently from all other literals:
> {code:java}
> final RexBuilder rexBuilder = cx.getRexBuilder();
> if (literal.getValue() == null) {
> RelDataType type = cx.getValidator().getValidatedNodeType(literal);
> return rexBuilder.makeNullLiteral(type);
> }
> switch (literal.getTypeName()) {
> ...
> {code}
> However, such a literal does *not* have a validated data type, so
> getValidatedNodeType will throw Util.needToImplement.
> The solution would be to handle NULL literals like all other literals and
> create a literal with a NULL type.
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