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Write Efficient Real World SQL Queries

What you will learn

Write Real World SQL Queries

Write queries to get all data from a database

Write queries to get specific data from a database

Write queries to get data from multiple database tables

Write queries to add new data to a database

Write queries to update existing data in the database

Write queries to remove data from the database

Write queries to filter data from a database

Write queries to sort data from a database


SQL is a standard language for storing, manipulating and retrieving data in databases.

SQL stands for Structured Query Language. SQL lets you access and manipulate databases

  • SQL can execute queries against a database
  • SQL can retrieve data from a database
  • SQL can insert records in a database
  • SQL can update records in a database
  • SQL can delete records from a database
  • SQL can create new databases
  • SQL can create new tables in a database
  • SQL can create stored procedures in a database
  • SQL can create views in a database

This course provides several exercises  for you  practice your SQL skills.  The  course also walks you through  the solutions to these questions step by step. and explains important key concepts to give you a better understanding.

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SQL is necessary for almost everything data related. Database systems have been around since the 1970’s and are used extensively at all companies and organizations. And to work with these databases at anything other than a very basic level, you need to understand and write SQL. And unlike some other technologies and programming languages (which change very frequently), SQL is much more stable. Once you learn it, it’s a skill you can use for a lifetime.

To really absorb and be able to apply your learning, you need to do real-world problems practice exercises.



Database Setup

Installing MySQL on Windows
Installing MySQL on Macs
Installing MySQL Workbench on Mac
Exploring the data source

Practice Exercises and Solutions

Please Read
Exercise 1
Exercise 1 Solution
Exercise 2
Exercise 2 Solution
Exercise 3
Exercise 3 Solution
Exercise 4
Exercise 4 Solution
Exercise 5
Exercise 5 Solution
Exercise 6
Exercise 6 Solution
Exercise 7
Exercise 7 Solution
Exercise 8
Exercise 8 Solution
Exercise 9
Exercise 9 Solution
Exercise 10
Exercise 10 Solution
Exercise 11
Exercise 11 Solution
Exercise 12
Exercise 12 Solution
Exercise 13
Exercise 13 Solution
Exercise 14
Exercise 14 Solution
Exercise 15
Exercise 15 Solution