Tamas Mate created CALCITE-7476:
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Summary: Add a dedicated SqlColonOperator for colon field access
Key: CALCITE-7476
URL: https://issues.apache.org/jira/browse/CALCITE-7476
Project: Calcite
Issue Type: Improvement
Components: core
Affects Versions: 1.41.0
Reporter: Tamas Mate
CALCITE-7448 adds parser support for colon field access syntax such as
`v:field` and `v:['field']`.
Right now this syntax is normalized to existing DOT / ITEM operators, which
means later validation and planning cannot tell whether the original syntax
used `:` or `.`.
We should consider adding a dedicated `SqlColonOperator`, similar to
`SqlDotOperator`, so Calcite can preserve that distinction in the SQL tree and
apply colon-specific rules more cleanly. One example would be validating colon
access only for `VARIANT` values.
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