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Eager Aggregation in SQL queries
Aggregation is a widely used way to summarize the content of a database. It is usually expressed with GROUP BY clause or just using aggregate functions (like COUNT or SUM). When the database engine...
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Saving Data Historically with Temporal Tables: Part 1: Queries
In this article we discuss how to store data temporally in PostgreSQL. Temporal database store data in a way that allows you to see not only what the value of any column is currently, but at any point...
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Making Temporal Databases Work. Part 2: Computing Aggregates Across Temporal...
The temporal database is a database that can keep information on time when the facts represented in the database were, are, or will be valid. We briefly described major concepts of temporal databases...
View ArticleMaking Temporal Databases Work. Part 3: Saving Data
The temporal database is a database that can keep information on time when the facts represented in the database were, are, or will be valid. We briefly described major concepts of temporal databases...
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