Top "Aggregation" questions

Aggregation is a relationship between two classes that is best described as a "has-a" and "whole/part" relationship.

Summing values of Hive array types

Hive has this pretty nice Array type that is very useful in theory but when it comes to practice I …

arrays hadoop aggregate hive aggregation
how to return the count of unique documents by using elasticsearch aggregation

I encountered a problem that elasticsearch could not return the count of unique documents by just using terms aggregation on …

elasticsearch unique aggregation
How to filter an elasticsearch global aggregation?

What I want to achieve: I want my "age" aggregation to not be filtered by the query filter and I …

elasticsearch aggregation
Application log aggregation, management and notifications

I'm wondering what everyone is using for logging, log management and log aggregation on their systems. I am working in …

logging aggregation
Aggregation multiplicity UML

Me and my colleagues can't agree on a point. In UML, when an aggregation is made, does the diamond shape …

uml aggregation multiplicity
Pyspark Dataframe Imputations -- Replace Unknown & Missing Values with Column Mean based on specified condition

Given a Spark dataframe, I would like to compute a column mean based on the non-missing and non-unknown values for …

python replace pyspark aggregation imputation
Error: "Multiple columns are specified in an aggregated expression containing an outer reference."

Hi I am receiving this error when trying to execute the query below. Any ideas or suggestions? Error:"Multiple columns …

sql sql-server tsql aggregation
Maven Inheritance and Aggregation Example Architecture

I have a question regarding how best to re-structure a number of individual Maven projects using a combination of inheritance …

inheritance maven parent aggregation pom.xml
Elasticsearch : aggregation "existing" fields

I'm quite new to ElasticSearch aggregations. I want to be able to count how many documents are retrieved with a …

elasticsearch aggregation
Client-Side Dynamic Removal of <script> Tags in <head>

Is it possible to remove script tags in the <head> of an HTML document client-side and prior to …

javascript html browser aggregation