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Tutorial Series: SQL

SQL stands for Structured Query Language, which is a programming language designed for managing and manipulating relational databases. It is the most widely used language for interacting with databases and is supported by the most popular relational database management systems (RDBMS) such as MySQL, Oracle, Microsoft SQL Server, PostgreSQL, and SQLite.

SQL allows users to create, modify, and query databases using a variety of commands and statements. With SQL, you can create new tables, insert, update, and delete data from existing tables, and retrieve data from one or more tables using a wide range of selection criteria.

Some common SQL commands include:

SELECT: retrieves data from one or more tables
INSERT: adds new rows to a table
UPDATE: modifies existing data in a table
DELETE: removes data from a table
CREATE: creates a new database object (such as a table, view, or stored procedure)
ALTER: modifies an existing database object
DROP: deletes a database object

SQL is a powerful and essential tool for managing data in relational databases and is widely used in applications such as web development, data analysis, and business intelligence.

SQL: How to Create A Database with SQL Query

The CREATE DATABASE statement is used to create a new database. When you create a database, you are essentially creating a container that will hold tables, indexes,...

SQL: How to Delete A Database with SQL Query

Deleting a database is an essential operation in SQL because it allows you to remove unwanted or obsolete data that is no longer needed. This can help to improve...

SQL: How to Create and Delete A Table with SQL Query

CREATE TABLE is a command used in SQL to create a new table in a database. When you create a table, you must specify the table name and the names and data types...

SQL: How to Insert and Select Data with SQL Query

INSERT and SELECT are two important commands used in SQL to manipulate data in a database. INSERT is used to add new data to a table by specifying the values to...

SQL: How to Use Where Clause in SQL

The WHERE clause is used to filter the results of a SELECT statement based on one or more specified conditions. It is used to retrieve only the data that meets certain...

SQL: How to Use Like & Order By Clause in SQL

The LIKE clause in SQL is used to filter results based on a pattern or substring match. It is particularly useful when searching for specific patterns within text...

SQL: Understanding Group By Clause, Distinct Keyword, and Sorting Results

The GROUP BY clause is used in SQL to group the results of a SELECT statement based on one or more columns. It works in conjunction with aggregate functions, such...

Select first row in each GROUP BY group?

Introduction to GROUP BY in SQLIn SQL, the GROUP BY clause is a powerful tool for summarizing data. It works by organizing rows with matching values in one...

How to reset or change the MySQL root password in UBUNTU 22.04?

IntroductionMySQL stands as one of the most ubiquitous database management systems, powering countless applications and websites across the digital landscape....

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