Will Noble created CALCITE-6055:
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Summary: Customize handling of type name based on type system
Key: CALCITE-6055
URL: https://issues.apache.org/jira/browse/CALCITE-6055
Project: Calcite
Issue Type: Bug
Reporter: Will Noble
This is very similar to CALCITE-5424, which only applied to literals (e.g.
{{TIMESTAMP '2023-10-17 12:00:00'}}). We need a similar solution for [the
{{DateTimeTypeName}}
construction|https://github.com/apache/calcite/blob/6f79436c178beec639e559d9152c237bbf8ec3e8/core/src/main/codegen/templates/Parser.jj#L6019]
which is used in other contexts (e.g. {{CAST '2023-10-17 12:00:00' AS
TIMESTAMP}}). Seems like we can use a very similar approach: introduce a
{{SqlUnknownTypeNameSpec}} that's resolved during validation.
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