Lucas Brenner created CALCITE-7073:
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Summary: Fix: Calcite Fails to Map ByteString to VARBINARY
Key: CALCITE-7073
URL: https://issues.apache.org/jira/browse/CALCITE-7073
Project: Calcite
Issue Type: Bug
Components: core
Reporter: Lucas Brenner
Calcite uses {{org.apache.calcite.avatica.util.ByteString}} internally to
represent {{{}VARBINARY{}}}. However, when introducing a custom function that
returns {{{}ByteString{}}}, such as {{UNBASE64}} (which decodes a Base64 string
to bytes), its return type defaults to {{{}OTHER{}}}. This occurs because there
is no explicit mapping for {{ByteString}} in the
{{JavaToSqlTypeConversionRules}} class. This PR adds the necessary mapping.
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