Gian Merlino created CALCITE-1347:
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Summary: Druid adapter column detection misses strings
Key: CALCITE-1347
URL: https://issues.apache.org/jira/browse/CALCITE-1347
Project: Calcite
Issue Type: Bug
Components: druid
Reporter: Gian Merlino
Assignee: Julian Hyde
Currently string columns aren't detected because "isSupportedType" doesn't
include them.
Also, I think there isn't any need to add to fieldBuilder while scanning the
"aggregators" - that map contains the aggregate functions used to create the
metric columns, but the metric columns are still in "columns" anyway.
Patch: https://github.com/apache/calcite/pull/268
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