dynamobi/dynamobi — Issue #403: [FRG-386] Add support for User Defined Aggregate Functions (UDAF)
Author: dynamobi-build
Created: 2011-12-30 03:12:36+00:00
State: open
Labels: FRG, Plugin Architecture

[reporter="ngoodman", created="Wed, 11 Nov 2009 14:18:47 -0500 (GMT-05:00)"]
Add support for Java based UDFs for aggregation (GROUP BY)

For example, the ability to add a UDF for stddev:

select stddev(col) from table group by othercol;

Need to spec out Farrago changes, how to write the group aware aggregates, and build.