Adam Gilmore created DRILL-2361:
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Summary: Column aliases cannot include dots
Key: DRILL-2361
URL: https://issues.apache.org/jira/browse/DRILL-2361
Project: Apache Drill
Issue Type: Bug
Components: Execution - Flow
Affects Versions: 0.7.0, 0.8.0
Reporter: Adam Gilmore
Assignee: Chris Westin
Priority: Minor
The Drill query engine rejects column aliases for aggregates or group by fields
where the alias includes a dot.
For example:
{code}select count(*) as `test.field` from cp.`employee.json`;{code}
throws an error with "Field references must be singular names."
Having reviewed the code, I can't quite see a reason for it, and when using
FieldReference.getWithQuotedRef instead in AggPrelBase, the issue is alleviated
with no visible side effects.
I'm sure there was a reason for this code in FieldReference, but I can't seem
to work out why, and it seems entirely reasonable to allow a dot in a column
alias.
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