SQL Tutorial : Basic to Advance

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Updated on Jun 23, 2023 10:34 IST

Through the SQL tutorial, we will try to explain the topic from basic to advanced. Topics are covered in complete detail and explained with the help of different examples that help you to understand the concepts better so that you can apply them to solve the data problem easily.

SQL stands for Structured Query Language and is the most advanced and powerful tool for Relational Database Management Systems. It is specifically designed to Create, Read, Update, and Delete (CRUD) the data in the database.

SQL has evolved in the past decades and is used by professionals like data engineers, data analysts, data scientists, business analysts, or database administrators to analyze the data.

Must Check: SQL Online Course and Certification

Must Check: Database and SQL Online Course and Certifications

The tutorial is divided into three modules: basic, intermediate, and advanced, followed by the SQL Interview Questions.

Basic

Introduction to SQL

This article will teach you basic and advanced concepts of SQL. It concepts, such as what is a Database Management System, what is SQL, SQL Data types, SQL Statements, and...read more

SELECT Statement in SQL

This article will help you understand some of the most common SQL SELECT use cases with examples. Large amounts of data in diverse types are stored in databases. Have you...read more

How to use LIMIT clause in SQL

In this article, we will discuss how to use SQL LIMITs and OFFSET through various examples with WHERE and ORDER BY clauses.

How to use WHERE clause in SQL

SQL WHERE clause is an optional clause to be used with SELECT statement. It is used to filter out the specified record from the dataset/table. So in this article we...read more

SQL Operator: Comparison and Arithmetic

While working with a large dataset you have to perform a different kind of operation to extract or manipulate the the data from the dataset. To perform these operation we...read more

Logical Operators in SQL

While working with a large dataset you have to perform a different kind of operation to extract or manipulate the the data from the dataset. To perform these operation we...read more

LIKE Operator in SQL

Logical Operators in SQL are used to connect two or more expressions. In this article, we will discuss one of the logical operators i.e. LIKE operator in detail about how...read more

How to use SQL IN Operator

In the previous article, we have discussed LIKE operator. In this article, we will discuss IN operator in SQL that is also a logical operator.

BETWEEN Operator in SQL

In the previous articles, we have discussed LIKE and IN operator. In this article we will discuss BETWEEN operator in SQL that is also a logical operator.

SQL Functions: Aggregate and Scalar

In this article, we will discuss about different SQL Functions: Aggregate and Scalar. Aggregate contains function like min, max, sum count while scalar contains function like now, round, mid etc.

How to use COUNT in SQL

Aggregate functions in SQL are used over a set of values, that return a single value. In this article, we will discuss one of the aggregate function COUNT function. Along...read more

What are Constraints in SQL?

Constraints in SQL are not a mandatory to use while creating the table but they are very helpful to maintain the accuracy, reliability, and integrity of the data during the...read more

Intermediate

How to use ORDER BY Clause in SQL

Sorting the result after extracting the data from the dataset is one of the most basic thing we do to get the pattern or highest/lowest values in a particular field...read more

How to use HAVING clause in SQL

When a query is applied to a large dataset, then we get number of records so we need to filter out the specific records. WHERE clause in SQL is used...read more

How to use GROUP BY in SQL?

The GROUP BY clause in sql is used to group the rows that have identical values by one or more columns. In this article, we will briefly discuss how GROUP...read more

How to CREATE TABLE in SQL

When you are working with the large dataset sometime you want to segregate some data and inspect them separately or sometimes you don’t have any table or dataset in that...read more

How to use INSERT in SQL

Storing data is of utmost importance for reproducing the same whenever the need arises and for several other business purposes. These data are stored inside tables, and related tables are...read more

UPDATE query in SQL

Once we are done with the creation of a table or database it is extremely important to update the database regularly. In this article we will briefly explain how we...read more

How to use TRUNCATE command in SQL?

SQL TRUNCATE TABLE command is used to remove the record from the table.
Confused, with the SQL DELETE statement, it also removes the record from the table.
So, why use...read more

How to Delete a Column in SQL?

Sometimes in the dataset, you have some columns that are not of your use but when you run a query it will also get executed that leads to you increase...read more

How to use DROP command in SQL?

DROP command in SQL is a DDL command that permanently removes the data (or existing table) from the database and free the space from the memory. In this article, we...read more

Advanced

SQL Joins: Inner, Left, Right and Full

This article includes different joins like left join. right joins, inner joins and full joins

INNER JOIN in SQL

SQL JOINS are used to combine more than two or more tables together to extract the useful data from all the tables. In this article, we will discuss INNER JOIN...read more

SQL LEFT JOIN – Examples and Syntax

SQL JOINS are used to extract the record from two or more interrelated tables. In the previous article, we briefly discussed SQL INNER JOIN. In this article, we will discuss...read more

SQL RIGHT JOIN – Example and Syntax

Right Join in the sql returns all the rows from the right table and the matching entries from both tables. In this article, we will discuss how to use right...read more

How to use UNION in SQL

UNION in SQL is similar to the union of two sets in mathematics that is equal to the set of element that are present in both the set. Similarly UNION...read more

Understanding Subqueries in SQL

This blog explains subqueries in SQL. We will explore what are nested queries and sub-queries and how they help retrieve data from complex databases.

Understanding SQL Server Data Types

An SQL data type is like a tag or a label that defines what kind of value a column in a database table can contain. Data types describe how the...read more

Introduction to Normalization – SQL Tutorial

This article will cover what Normalization in SQL is, its forms, such as 1NF, 2NF, etc., and examples.

Introduction to Window Functions in SQL

As a beginner, the majority of queries we write in SQL are focused on returning a single piece of data, or a single piece of data per group.

Cursors in SQL: Definition, Types and Lifecycle

In this article, we will talk about the definition, types and lifecycle of cursors in SQL. Do take a look to learn about SQL cursors in detail.

Using SQL Pivot – SQL Tutorial

This article will cover what SQL PIVOT is, how to use SQL PIVOT, and what SQL UNPIVOT is, along with examples.

ACID Properties in SQL

ACID (Atomicity, Consistency, Isolation, and Durability) are being used in SQL transaction. In this article, we will briefly discuss about these ACID properties with examples.

FAQs

What are the different types of SQL commands?

SQL commands are broadly divided into three major categories, DDL (Data Definition Language), DML (Data Manipulation Language), and DCL (Data Control Language).

What are the different types of database SQL can work with?

SQL is primarily associated with relational databases, such as MySQL, Oracle, and SQL Server, where data is organized into one or more tables. However, many NoSQL databases, like MongoDB and Cassandra, also support SQL-like query language variants.

What is a SQL JOIN?

A JOIN in SQL is a method to retrieve data from two or more database tables based on a related column between them. There are several types of JOINs INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN.

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Vikram Singh

Assistant Manager - Content

Vikram has a Postgraduate degree in Applied Mathematics, with a keen interest in Data Science and Machine Learning. He has experience of 2+ years in content creation in Mathematics, Statistics, Data Science, and Mac... Read Full Bio

SQL Tutorial : Basic to Advance

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Intermediate

Advanced

FAQs

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