SQL Tutorial for Beginners

This SQL Tutorial for Beginners is a complete package for how to learn SQL online. In this SQL tutorial , you will learn SQL programming to get a clear idea of what Structured Query Language is and how you deploy SQL to work with a relational database system.

So, a structured query language is a language that is used to operate the relational databases. Some of the major ways in which SQL is used in conjunction with a relational database is for the purposes of storing, retrieving and manipulating of data stored in a relational database.

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Here we have the list of topics if you want to jump right into a specific one:

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SQL Tutorial – Learn SQL Programming Online from Experts

What is SQL?

To learn SQL Online, first let us compare SQL with NoSQL in the below table:

Comparison criteria SQL NoSQL
Type of database Relational Non-relational
How is data stored Structured data in tables Unstructured data in JSON files
Suitability for OLTP systems Excellent Average
Database compliance ACID properties CAP Theorem

The language to communicate with the relational database is the SQL or Structured Query Language. SQL programming helps to operate the relational databases and derive information from it.

Some of the operations that the SQL does include creation of database, fetching, modifying, updating and deleting the rows along with storing, manipulating and retrieving data within the relational database. SQL programming is an ANSI standard language but there are a lot of versions of SQL in usage as well.

Why is SQL programming so widely used?

Structured Query Language or SQL programming is used so extensively for the following reasons.

  • SQL lets you access any data within the relational database
  • You can describe the data in the database using SQL
  • Using SQL you can manipulate the data with the relational database
  • SQL can embed within other languages through SQL modules & libraries
  • SQL lets you easily create and drop databases and tables
  • SQL allows you to create views, functions and stored procedures in databases
  • Using SQL you can set permissions on procedures, tables and views.

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SQL Tutorial – Learn SQL Programming Online from Experts

Features of SQL

Here in this section of the SQL tutorial for beginners, we list some of the top features of SQL that make it so ubiquitous when it comes to managing relational databases.

  • SQL is very simple and easy to learn language
  • SQL is versatile as it works with database systems from Oracle, IBM, Microsoft, etc.
  • SQL is an ANSI and ISO standard language for database creation and manipulation
  • SQL has a well-defined structure as it uses long established standards
  • SQL is very fast in retrieving large amounts of data very efficiently
  • SQL lets you manage databases without knowing lot of coding.

Applications of SQL

Here in this section of the SQL tutorial we will learn SQL applications that make it so important in a data-driven world where managing huge databases is the norm of the day.

  • SQL is used as a Data Definition Language (DDL) meaning you can independently create a database, define its structure, use it and then discard it when you are done with it
  • SQL is also used as a Data Manipulation Language (DML) which means you can use it for maintaining an already existing database. SQL is a powerful language for entering data, modifying data and extracting data with regard to a database
  • SQL is also deployed as a Data Control Language (DCL) which specifies how you can protect your database against corruption and misuse.
  • SQL is extensively used as a Client/Server language to connect the front-end with the back-end thus supporting the client/server architecture
  • SQL can also be used in the three-tier architecture of a client, an application server and a database which defines the Internet architecture.

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Why should you learn SQL?

Today regardless of the relational databases systems by major corporations like Oracle, IBM, Microsoft and others, the one thing that is common to them is the Structured Query Language or SQL.

So if you learn SQL online then you will be able to pursue a very broad career spanning a lot of roles of responsibilities. Also if you are learning SQL then it is important for a data science career as well since a data scientist will also have to deal with relational databases and query it using the standard language SQL.

Recommended audience

This SQL for beginners can be beneficial to anybody who wants to learn SQL online. Software developers, database administrators, architects, managers can take this SQL tutorial as a first step for learning SQL and excel in their careers.

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There are no prerequisites for  learning SQL from this SQL for beginners. If you have a basic understanding computer languages and databases, then it is beneficial.

Frequently Asked Questions

How much time it will take to learn SQL?

The answer to this question is completely subjective to the programming knowledge of a learner. If the learner is familiar with basic programming skills, he/she can master the fundamentals of SQL within a few days. However, to master advanced SQL skills, learners should take up instructor-led online SQL training. This training lasts up to 4 weeks.

How can I learn SQL for free?

This tutorial can help you understand the concepts of SQL comprehensively. You can also refer to our free SQL video tutorial on YouTube. And, if you want to learn SQL from industry experts, you can enroll in our SQL course using this link.

Is SQL easy to learn?

Yes, it is easy to learn SQL as it is not a programming language itself; rather it is a Query language. Most SQL syntaxes are like the English language and therefore almost everyone who understands English can write SQL queries with ease.

How can I learn SQL at home?

You can learn the fundamentals of SQL by referring to this SQL tutorial, or free SQL video tutorials on YouTube, or enrolling with us for online SQL training.

Why is SQL so powerful?

SQL is powerful because it is the primary language that is used to manage large databases for organizations. Joins in SQL allow users to ingest data from multiple sources and compare the same to make required changes. SQL makes it possible for database personnel to manage databases with minimal effort.

Why is SQL used?

The major applications of SQL include writing data integration scripts, setting and running analytical queries, retrieve subsets of information within a database for analytics applications and transaction processing, and adding, updating, and deleting rows and columns of data in a database.

Is learning SQL worth it?

SQL is the most popular database language in the IT world and is therefore worth learning. With extensive applications across various verticals, SQL is something that can help you build a lucrative career in the database management domain.

How many types of SQL are there?

There are several types of SQL statements. They are:

  • Data Definition Language (DDL)
  • Data Manipulation Language (DML)
  • Data Control Language (DCL)
  • Transaction Control Statements (TCS)
  • Session Control Statements (SCS)

Table of Contents

What is SQL - Basic SQL Commands with example

What Is SQL?: SQL full form is Structured Query Language. SQL is a domain-specific language. It is used in application development language to enable a programmer to work with the data. The data is stored in a relational database. To manage this data, we have relational database management systems like SQL Server, MySQL, MS Access, etc. that use SQL as Read More

Features of SQL

Features of SQL: SQL is one of the most demanding skill in the current world. Every day a huge amount of data is collected and one have to deal with these databases to make an insightful information. Hence it is important for us to learn SQL as it is a special-purpose database programming language which help to generate useful strategies Read More

How to install SQL Server?

Download and Install Microsoft SQL Server: Microsoft SQL Server is a relational database management system developed by Microsoft. The product’s primary function is to store and retrieve the data as requested by the user or another application. These SQL functions can either run on the same system or another over a network. Watch this video on How to install SQL Read More

SQL Database Queries

How to Create, Use, and Drop a SQL Database ?: A database contains records, and to create, modify, or delete these records SQL queries are used. An SQL query can either be an action query like delete or create or a select query like select or use. These queries are used to find specific data, perform actions on it, or Read More

Tables in SQL

Overview of Tables in SQL: Tables are the fundamental level to store data in a relational database management system. It contains a header row at the top of the table which gives the list of column names, followed by rows that contain data. we will discuss the basic operations performed on a database by using important SQL operators. Watch this SQL Read More

SQL Data Types

Data Types in SQL: SQL Data types inform a compiler or interpreter about the characteristics of the data used in a program. In simple words, a data type is a particular kind of data item which helps define the operations that can be performed on the data. There are different data types available like character data type for the letters Read More

Create & Drop Table in SQL

How to Create and Drop Table in SQL: A database contains data, and to store data we need a table. Tables are the fundamental level of a database to store data. It comprises columns, which contain a set of data values of a particular type, and rows, which contains a single data item. In this tutorial section, we will discuss Read More

Insert query in SQL - INSERT INTO SQL

SQL INSERT INTO Query: The INSERT statement is used to insert records in a table. The table selected to insert data must have the same number of columns and values. In this tutorial section, we will discuss on the Insert statement syntax with an example. Watch this Insert query in SQL video [videothumb class="col-md-12" id="sGTtNCU_Cqs" alt="Insert into Table SQL" title="Insert Read More

Select Query in SQL

Select Statement in SQL: The Select statement in SQL is the most commonly query used statement in SQL. It is used to either fetch a data according to some specified rule or display an entire table. The data displayed after the query execution is stored in a result table. Watch this  video [videothumb class="col-md-12" id="WS_A0-l5IiQ" alt="Select Statement in Read More

WHERE Clause in SQL

What Is Where in SQL?: 'Where' as a word is used to distinguish a place or position and that’s exactly what the SQL Where clause does. Where in SQL is used to specify a condition while fetching the data. The Where in SQL fetches only the necessary records. Wish to crack SQL interviews? Intellipaat's Top SQL Interview Questions are meant Read More

SQL Operators - Logical Operators in SQL

Operators in SQL: These SQL operators are considered as a set of reserved words used in SQL Where clause. They specify the condition and also serve as a conjunction for multiple conditions in a statement. In this tutorial, we will discuss on: How to Impose Conditions using SQL Operators? AND Operator in SQL and its syntax SQL OR Operator and Read More


Using IN and BETWEEN Operatores in SQL: IN Operator: IN clause is used with the WHERE clause to specify discrete values. The syntax is as follows: Syntax: SELECT column1, column2…. FROM table_name WHERE column1 IN (value1, value2….); Example: Let us consider the Student_details table. Name Roll No. Marks Akshay 1 57 Charu 2 68 Disha 3 52 Eva 4 68 Read More


Update command in SQL: In this tutorial section, we will discuss on what is an UPDATE query in SQL and how to update records using SQL UPDATE query in a SQL Table with a Demo. Watch this Update Query in SQL video [videothumb class="col-md-12" id="HyIGW3TsCgY" alt="Update & Delete Using Join" title="Update & Delete Using Join"] A Brief Introduction to the Read More

Delete and Truncate Query in SQL

Delete and Truncate commands in SQL: The Delete query in SQL only deletes records from the table, and it doesn’t make any changes in the definition, i.e., it only manipulates. Hence, it is DML (Data Manipulation Language). The Truncate command in SQL removes all rows from a table, i.e., it reinitializes the identity by making changes in the data definition. Read More

Order By and Group By in SQL

Order By and Group By Clause in SQL: In this SQL tutorial we will learn how to use Order by and Group By in SQL. Group By in SQL is used to arrange similar data into group and Order By in SQL is is used to sort the data in the ascending or descending order. Wish to crack SQL job Read More

Select Distinct in SQL

Select Distinct in SQL - Remove duplicate data from table: Select Distinct in SQL is used to remove the duplicate data from the table. SQL DISTINCT Keyword is used along with the SELECT statement The SQL Distinct syntax is as follows: SELECT DISTINCT column1, column2…. FROM table_name WHERE [condition]; Example: Consider the Student_details table: Name Roll No. Marks Akshay 1 Read More

LIKE Operator

How to search a specified pattern in a column in SQL?: It is used to search a specified pattern in a column. The two wildcards operator used in conjunction with the LIKE operator. % - The percent sign is used to represent one or more characters. _ - The underscore sign is used to represent only one Character. Syntax: SELECT Read More

Alter Command in SQL - Alter Column - Alter Table

Alter Command in SQL: Alter command in SQL is used to add, delete, or modify columns in an existing table. Alter in SQL is will help to make changes in the existing columns like add columns or delete columns. Watch this  Tutorial video [videothumb class="col-md-12" id="v2uSprqdODE" alt="Alter command" title="Alter command"] Alter Table Add Column To add a Read More

Union in SQL - Union All in SQL

Union in SQL: is used to combine the two or more results. The each SELECT statement must have same no. of columns, same datatypes and in the same order. Watch this Union Command in SQL Tutorial video [videothumb class="col-md-12" id="VxK6ePlxzkw" alt="SQL Union Tutorial" title="SQL Union Tutorial"] Syntax: SELECT column_name FROM table1 UNION SELECT column_name FROM table2; Union All Read More

LIKE and BETWEEN Operators in SQL

LIKE and BETWEEN in SQL: LIKE and BETWEEN operators in SQL are used to compare values in a database. In this tutorial section, we will discuss on: LIKE in SQL BETWEEN in SQL Watch this Like and Between operators in SQL [videothumb class="col-md-12" id="jerWdB2j8xk" alt="Like and Between Operators in SQL" title="Like and Between Operators in SQL"] LIKE Operator in SQL Read More

Constraints in SQL - Check and Default Constraints in SQL

What is Constraint in SQL?: Constraints are the rules applied on data columns on table. These are used to bound the type of data that can go into a table. This ensures the accuracy and consistency of the data. If there is any violation between the constraint and the data action, the action is aborted by the constraint. Wish to Read More

Date Format in SQL - SQL DateTime Format

DATE FORMAT in SQL - SQL FORMAT (): This FORMAT () function in the SQL is utilized for formatting a field in order to be brought into its displayable standard format. The Syntax for the format function is mentioned below: SELECT FORMAT (column_name, format) FROM table name; Here, the column_name -  Tells about the ground where formatting are required. And the Read More

SQL Functions - Date, Rank, String, Aggregate Functions in SQL

Popular Functions in SQL: SQL(Structured Query Language) has got a huge number of functions. This article will give a description most of the SQL Functions. Check out this Functions in SQL With Examples video [videothumb class="col-md-12" id="cVe06NVDaoI" alt="SQL Functions With Examples" title="SQL Functions With Examples"] The SQL functions are as follows: Aggregate Functions in SQL (Transact-SQL) Aggregate SQL functions perform Read More

Joins in SQL - SQL Joins

What is Joins in SQL?: SQL Joins is used to combine rows of two or more tables by using common values. Prepare yourself for the industry by going through this Top SQL Interview Questions and Answers! Example: Let us consider two tables first is Student details Name Roll No. Marks Akshay 1 57 Charu 2 68 Disha 3 52 Eva Read More

Left Join in SQL - SQL Left Joins

What is Left Join in SQL?: Left Join is a keyword, which is used to select all rows from the left table and also the matched values between the two tables. Enrol yourself in Online SQL training and give a head-start to your career in machine learning! Watch this Left Join in SQL video [videothumb class="col-md-12" id="jsLLa2_G6OU" alt="Left Join SQL" Read More

Right Join in SQL - SQL Right Join

What is Right Join in SQL?: Right Join is a keyword, which is used to select all rows from the right table and also the matched values between the two tables. Wish to crack SQL interviews? Intellipaat's Top SQL Interview Questions are meant only for you! Watch this Right Join in SQL video [videothumb class="col-md-12" id="U01-172PP7k" alt="Right Join SQL" title="Right Read More

Inner Join in SQL - SQL Inner Joins

What is Inner Join in SQL?: Inner Join is a keyword, which is used to select all rows from the participating tables as long as there is a match between columns. Get familiar with the top SQL Interview Questions to get a head start in your career! Watch this Inner Join in SQL video [videothumb class="col-md-12" id="tEIcjjPycj8" alt="Inner Join SQL" Read More

Full Join in SQL – SQL Full Joins

What is Full Join in SQL?: Full Join is a keyword, which is used to select all records from the right table and also from the left table Watch this Full Join in SQL video [videothumb class="col-md-12" id="J2NPKB3O-bo" alt="Full Join SQL" title="Full Join SQL"] Full Join in SQL The Full Join basically returns all records from the left table and Read More


What is RDMS?: RDMS is an information management system which is oriented on a data model. Here all the information is properly stored as tables. RDMS Example systems are SQL Server, Oracle, MySQL, MariaDB and SQLite. RDBMS full form RDBMS full form is for Relational Database Management System. It arranges information into allied rows and columns. Basic Features of RDMS: Read More

ACID Properties & Normalization

ACID Properties: ACID Property is the most important part of the database. ACID stands for Atomicity Consistency Isolation Durability. Atomicity:  This means that “all or nothing”. When an update occurs to a database either all or none of the update will become available to anyone beyond the user. This update to the database is called a transaction and it either Read More

SQL Cheat Sheet

SQL Quick Reference Guide: For a software Developer or a programmer, basic knowledge on SQL is a must. This helps in retrieving the information from the database and to perform modifications and several operations on the data. This SQL cheat sheet provides you with the necessary concepts required to start on with SQL. It is helpful for the beginners willing Read More

SQL Commands Cheat Sheet

Introduction:: SQL is a basic query language which every programmer must know. This cheat sheet will guide you through the basic SQL commands required to learn and work on SQL. You can also download the printable PDF of this SQL command cheat sheet Kick-start your career in SQL with the perfect SQL Training Course now! Watch this SQL Interview Questions Read More

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