Mastering SQL Joins

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在此指導項目中,您將:

Retrieve desired result set using the different types of joins in SQL

Join more than two tables in a database using SQL Joins

Clock2 hours
Advanced高級設置
Cloud無需下載
Video分屏視頻
Comment Dots英語(English)
Laptop僅限桌面

In this 2-hour long project-based course, you will understand how to use SQL joins like INNER JOIN, LEFT JOIN, and RIGHT JOIN to get a desired result set. In addition, you will learn how to use SQL Joins with the WHERE clause and with aggregate functions. By extension, you will learn how to join more than two tables in the database. Note: You do not need to be a data administrator or data analyst expert to be successful in this guided project, just you have to be familiar with querying databases using SQL SELECT statement to get the most of 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", “Querying Databases using SQL SELECT statement” and “Performing Data Aggregation using SQL Aggregate Functions”

您要培養的技能

  • Data Management
  • Join (Sql)
  • Database Management Systems
  • Data Analysis
  • Postgresql

分步進行學習

在與您的工作區一起在分屏中播放的視頻中,您的授課教師將指導您完成每個步驟:

  1. Retrieve data from the dept_manager_dup and departments_dup tables in the database

  2. Retrieve data from the two tables using INNER JOIN

  3. Retrieve data from tables with duplicate records using INNER JOIN

  4. Retrieve data from tables in the employees database, using LEFT JOIN

  5. Retrieve data from tables in the employees database, using RIGHT JOIN

  6. Retrieve data from tables in the employees database, using SQL Joins together with the WHERE clause

  7. Retrieve data from tables in the employees database, using Aggregate Functions with Joins

  8. Retrieve data from tables in the employees database, by joining more than two Tables in SQL

指導項目工作原理

您的工作空間就是瀏覽器中的雲桌面,無需下載

在分屏視頻中,您的授課教師會為您提供分步指導

常見問題

常見問題

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