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From a string to the thing: Parsing and planning SQL queries with Apache Calcite – Part 1

To get the results, an SQL query must be parsed, validated, planned, optimized, and finally executed on a query engine. Apache Calcite can help with all that.

Gently down the stream processing

How to perform real-time processing when data ingestion rates are measured in millions of entries per second?

Compiling SQL queries for Mireo SpaceTime

Using a model in which data is pushed towards natively compiled relational operators drastically improved evaluation times of SQL queries for...

Was it my way, or was it highway? An introduction to map matching.

To make sense of any data it's often important to be able to connect it to the real world. When a vehicle sends its location to the server,...

Why would a normal person build their own spatiotemporal database?

Storing and querying datasets that contain objects in a geometric space have always required special treatment. The choice of data structures and query...

What is a map projection?

Each projection has its cons and pros, so the right question isn't which one is the best but for which purpose map is needed?

Do you know how your mobile device knows where you are?

The process, in a nutshell, is quite simple – GPS receiver in your mobile phone gets radio signals from GPS satellites in the space, and according to ...

What do you think about connected insurance based on GPS tracking data?

"I know you haven't had an accident in 15 years. That's why we're raising your rates. Because you're about due one." (Jantoo Cartoons) Does this scenario..

One of the greatest barriers to the adoption of electric vehicles is ...?

One of the greatest barriers to the adoption of electric vehicles (EVs) is range anxiety. Electric vehicles have a limited range and long charging times...

Have you ever thought about how much time you spend in traffic?

"Stuck in a traffic jam is not an excuse. It's a sign of bad planning." (Susan Elizabeth Philips) It's something to think about it, for sure. Are you...
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