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Comentários e feedback de alunos de Performing Data Aggregation using SQL Aggregate Functions da instituição Coursera Project Network

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55 classificações
5 avaliações

Sobre o curso

In this 2-hour long project-based course, you will learn how to retrieve data from tables in a database using SQL SELECT statement with SQL Aggregate functions. The aggregate functions we will consider in this project are COUNT, SUM, MIN, MAX and AVG. Aggregate functions are used to summarize data from rows of a table into a single value. In addition, you will learn how to set conditions on the output of an aggregate function using the HAVING clause. Finally, you will learn how to tidy up the result set of aggregate functions using the ROUND function. Note: You do not need to be a data administrator or data analyst to be successful in this guided project, just a familiarity with querying databases using SQL SELECT statement suffice for this project. If you are not familiar with SQL and want to learn the basics, start with my previous guided projects titled “Performing Data definition and Manipulation in SQL." and “Querying Databases using SQL SELECT statement”...

Melhores avaliações

CC
11 de Jan de 2021

Class was good. I couldn't find the answer to one of the quiz questions even after going back to the lesson referring to it.

AC
29 de Dez de 2020

A complete and easy to understand course on SQL aggregate function.

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1 — 5 de 5 Avaliações para o Performing Data Aggregation using SQL Aggregate Functions

por Eric J

22 de Nov de 2020

This is an easy, basic course for SQL aggregate functions. This is definitely for beginners and the instructor makes a few mistakes and uses some unusual contract examples. However, it was a quick, nice refresher and for those looking to practice aggregate functions, it covers the core topics well. I especially liked the provided sql scripts so you can quickly create your test databases and test on your own system using your SQL dialect of preference. This was my first time to use PostgreSQL and I enjoyed it. It has a few things I like better than MySQL. I like the latter and had it installed prior to taking this course. Thus, I won't be uninstalling it or replacing it but PostgreSQL is a great alternative.

por Carol C

12 de Jan de 2021

Class was good. I couldn't find the answer to one of the quiz questions even after going back to the lesson referring to it.

por Ashish C

30 de Dez de 2020

A complete and easy to understand course on SQL aggregate function.

por Daniel L M

16 de Out de 2020

A good course to take!!

por rohithasree d

29 de Set de 2020

Good