This tutorial demonstrates some useful features built into Query view in Apache Druid. Query view lets you run Druid SQL queries and native (JSON-based) queries against ingested data. You can use ...

There are various ways to run Druid SQL queries: from the web console, using a command line utility and by posting the query by HTTP. We'll look at each of these. Query SQL from the web console The ...

Query federation is a way to make use of distributed data sources on the Web, including many SPARQL endpoints as well as relational databases. SWObjects makes use of mapping rules represented as ...