Hongze Zhang created CALCITE-2670:
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Summary: Combine similar JSON aggregate functions in operator table
Key: CALCITE-2670
URL: https://issues.apache.org/jira/browse/CALCITE-2670
Project: Calcite
Issue Type: Improvement
Components: core
Reporter: Hongze Zhang
Assignee: Julian Hyde
Improvement contains following:
# Combine *JSON_ARRAYAGG_NULL_ON_NULL* and *JSON_ARRAYAGG_ABSENT_ON_NULL*
# Combine *JSON_OBJECTAGG_NULL_ON_NULL* and *JSON_OBJECTAGG_ABSENT_ON_NULL*
# Add *SYMBOL* type Support for *JavaTypeFactoryImpl#getJavaClass*
This is to generate *Enum* java type for *SYMBOL*. Current version of Calcite
generates *Object[]*, which delivers type casting error, or some method
compatible problems when we combine the functions above.
# Add SQL-to-Rel test cases for JSON functions.
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