Support for multi-column aggregate functions
Anderson, David B
david.b.anderson at citi.com
Wed Apr 27 15:39:37 CEST 2016
I am really looking for an implementation of a weighted percentile within a group.
From: Anderson, David B [ICG-MKTS]
Sent: Wednesday, April 27, 2016 9:18 AM
To: users-list at monetdb.org
Subject: Support for multi-column aggregate functions
Does the current version of MonetDB support multi-column aggregate functions? I need to create a function which returns the "quantiles" of one column using another column as a weighting. It looks like PostgreSQL supports multi-column aggregates as of 8.2.
I could write an embedded R function to compute this, but want to know if it is even possible to pass in multiple columns.
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