Julian Hyde created CALCITE-3123:
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Summary: In RelBuilder, eliminate duplicate aggregate calls
Key: CALCITE-3123
URL: https://issues.apache.org/jira/browse/CALCITE-3123
Project: Calcite
Issue Type: Bug
Reporter: Julian Hyde
In {{RelBuilder}}, eliminate duplicate aggregate calls. For example, if you
call {{RelBuilder.aggregate}} with {{sum($1)}}, {{sum($2)}}, {{count($1)}},
{{sum($1)}} then it would create an {{Aggregate}} with 3 aggregate calls
(because {{sum($1)}} occurs twice), then add a {{Project [$1, $2, $3, $1]}}.
The {{Project}} is necessary so that you get the number of output fields that
you are expecting.
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