SUM? COUNT? CASE WHEN FUNCTION - SQL Tutorial

Pubblicato il: 18 dicembre 2022
sul canale di: He Loves Data

2,439

In this weeks tutorial, I show you how to use SUM and Count with a Case When statement and the difference between the two.

To get started in Data Science, you will need to build you SQL skills. SQL is the database query language that uses keywords (not functions) to search and manipulate the database. Data professionals need to have advance skills in this area since all companies maintain their data in databases. A data warehouse is also a type of database.

Udemy SQL Course:
SQL Bootcamp - Zero to Hero
[https://www.udemy.com/course/the-comp...](https://www.udemy.com/course/the-comp...)

Python is the main programming language for data professionals. Its best to learn Python after getting a good grasp for SQL. There are many Data Analyst just that only require SQL and Excel skills. Yes, excel will outlive all of use!!

Udemy SQL Course:
Complete Python Bootcamp - Zero to Hero -
[https://www.udemy.com/course/complete...](https://www.udemy.com/course/complete...)
I recommend that you complete this course without any other resources until you are done. Newbies tend to bounce all over the place.😄

Postgres Advanced SQL - Adam Wilbert
https://www.linkedin.com/learning/pos...

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