James Turton created DRILL-8406:
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Summary: Enable implicit casting of VARCHAR and BIT args in
aggregate functions
Key: DRILL-8406
URL: https://issues.apache.org/jira/browse/DRILL-8406
Project: Apache Drill
Issue Type: Improvement
Components: Functions - Drill
Affects Versions: 1.21.0
Reporter: James Turton
Assignee: James Turton
Fix For: 1.21.1
Default function implementations that that throw unsupported operation
exceptions in the class AggregateErrorFunctions prevent the implicit casting of
VARCHAR and BIT arguments to neighbouring types. E.g.
{code:java}
apache drill> select sum('1');
Error: UNSUPPORTED_OPERATION ERROR: Only COUNT, MIN and MAX aggregate functions
supported for VarChar type{code}
This issue proposes to remove AggregateErrorFunctions so that implicit casting
works, the example above changing as follows.
{code:java}
apache drill> select sum('1');
EXPR$0 1
1 row selected (2.346 seconds)
{code}
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