Hello everyone,
I wonder if there is a way to send a variable number (Array) of attributes
(columns) to a custom user defined aggregate function.
I want to be able to have something like:Select myAggrFn(col1,col2,..., coln)
from mytable;
I wonder if there is something like the following or anything else that can
handle this case:@FunctionTemplate(name = "myAggrFn", scope =
FunctionTemplate.FunctionScope.POINT_AGGREGATE)public static class
MyAggrFnimplements DrillAggFunc{ @Param ObjectHolder[] in;
I know it's weird to have a function like that, but I'm implementing machine
learning into Drill and need to pass some columns or maybe the whole row to the
aggregate function to train and use the model.
Regards
Shadi KhalifaPhD CandidateSchool of Computing Queen's University Canada
I'm just a neuron in the society collective brain
01001001 00100000 01101100 01101111 01110110 01100101 00100000 01000101
01100111 01111001 01110000 01110100
P Please consider your environmental responsibility before printing this e-mail
