Gain insights into SQL by exploring database creation, data manipulation, and advanced queries. Learn about practical applications and practice for SQL interviews to build confidence and readiness.

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The ability to work SQL is becoming an increasingly in-demand skill, both for software developers and people in less technical roles. If you’re interested in learning SQL and have no prior experience with it, then this course will be your light in a dark tunnel.

You’ll start by covering the basics of SQL such as how to create a database, how to insert, query, and update data. You’ll also learn fundamental concepts that developers and data scientists use everyday such as multi-table operations, nested queries, and how to set up views. 

Throughout, you’ll get to execute SQL queries in your browser and see results in real-time - you won’t need to worry about set-up.

At the end of this course, you’ll also get some hands-on practice with common SQL interview questions, so when the time comes, you’ll be ready and confident to answer any question that comes your way. Let’s get started!

An Introductory Guide to SQL

# ORDER BY Clause   
In the previous couple of sections, we have seen how to query data from a table. The retrieved rows aren't printed in any particular order. The __ORDER BY__ clause allows us to print the retrieved rows in an orderly fashion based on the criteria we specify.


## Example Syntax
> SELECT **col1, col2, ... coln**  
>
> FROM **table**
>
> WHERE **col3 LIKE "%some-string%"**
>
> ORDER BY **col3**

>Connect to the terminal below by clicking in the widget. Once connected, the command line prompt will show up. Enter or copy and paste the command **./DataJek/Lessons/11lesson.sh** and wait for the mysql prompt to start-up.


-- The lesson queries are reproduced below for convenient copy/paste into the terminal. 

-- Query 1
SELECT * FROM Actors ORDER BY FirstName;

-- Query 2
SELECT * FROM Actors ORDER BY FirstName DESC;

-- Query 3
SELECT * FROM Actors ORDER BY NetWorthInMillions, FirstName;

-- Query 4
SELECT * FROM Actors ORDER BY NetWorthInMillions, SecondName;

-- Query 5
SELECT * FROM Actors ORDER BY NetWorthInMillions DESC, FirstName ASC;

-- Query 6
SELECT * FROM Actors ORDER BY NetWorthInMillions DESC, FirstName DESC;

-- Query 7
SELECT * FROM Actors ORDER BY BINARY FirstName;

-- Query 8
SELECT * FROM Actors ORDER BY NetWorthInMillions;

-- Query 9
SELECT * FROM Actors ORDER BY CAST(NetWorthInMillions AS CHAR);


1. Suppose we want to print the names of all the actors sorted in alphabetical order. We can do so using the following query:

   ```mysql
   SELECT * FROM Actors ORDER BY FirstName;
   ```


This lesson discusses how to use the ORDER BY clause.

Introduction

Basic SQL

Joins

Nested Queries

Multi Table Operations

Views

Stored Procedures

Triggers

Miscellaneous

Practice & Prep

Epilogue

ORDER BY

ORDER BY Clause

Example Syntax