Hierarchical and Recursive Queries in SQL Server

Course Description

Do you want to query complex data structures in an iterative way? Do you have access to hierarchical data structures that need to be queried? This course will teach you the tools required to solve these questions. You will learn how to write recursive queries and query hierarchical data structures. To do this, you will use Common Table Expressions (CTE) and the recursion principle on a wide variety of datasets. You will, for example, dig into a flight plan dataset and learn how to find the best and cheapest connection between two airports. After completing this course, you will understand the principle of recursion, and be able to identify and create hierarchical data models.

In the following tracks

Data AnalystSQL Server for Database Administrators

Datasets

Power grid dataEmployee dataDepartment dataSalary dataBill of materials products dataBill of materials dataFlights data

Collaborators

Alex YaroshSara BillenMona Khalil

Prerequisites

Functions for Manipulating Data in SQL Server

Dominik Egarter

Data Engineering Enthusiast

Dominik Egarter is IT architecture manager & data engineering enthusiast at Kelag, a power utility company in Austria. He is responsible for the data and information architecture and leads several data science and data engineering projects in the fields of predictive maintenance, telecommunication networks, power grid networks, and customer insights. Dominik regularly uses R and SQL to implement algorithms and apps (R Shiny apps) which could be used to enforce new business insights and makes data easy to use for everyone.

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