Julian Hyde created CALCITE-4918:
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Summary: Add a VARIANT data type
Key: CALCITE-4918
URL: https://issues.apache.org/jira/browse/CALCITE-4918
Project: Calcite
Issue Type: Bug
Reporter: Julian Hyde
Add a VARIANT data type. It would be a tagged union, and allow values of
multiple types to be stored, along with a type indicator so that the actual
type of each value can be discerned.
VARIANT is not in the SQL standard. I know of three databases that have a
VARIANT type: MSSQL, Snowflake, Teradata. Calcite's VARIANT type will probably
draw from all three; however, the goal is not full compliance with any of them,
but useful functionality.
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