Souy Soeng

MySQL LIMIT Clause The LIMIT clause in MySQL is used to restrict the number of rows returned by a query. It is particularly useful when you only nee…

MySQL BETWEEN Operator The BETWEEN operator in MySQL is used to filter rows with column values within a specified range, inclusive of the boundary v…

MySQL IN Operator The IN operator in MySQL is used to filter results by matching a column value against a set of specified values. It simplifies que…

MySQL OR Operator The OR operator in MySQL is used to combine multiple conditions in a WHERE clause. It returns TRUE if any of the specified cond…

MySQL AND Operator The AND operator in MySQL is used to combine two or more conditions in a WHERE clause. It returns TRUE only when all the condit…

MySQL DISTINCT Clause The DISTINCT clause in MySQL is used to remove duplicate rows from the result set. It ensures that only unique rows are return…

MySQL ORDER BY Clause The ORDER BY clause in MySQL is used to sort the result set of a query in either ascending ( ASC ) or descending ( DESC ) orde…

How To Rename a Table Using MySQL RENAME TABLE Statement The RENAME TABLE statement in MySQL is used to rename an existing table. This operation is…

MySQL DROP COLUMN Statement The DROP COLUMN statement in MySQL is used to delete a column from an existing table. Once a column is dropped, all its …

MySQL NOT NULL Constraint The NOT NULL constraint in MySQL ensures that a column cannot have a NULL value. It is used when a column must always con…

How to Add Columns to a Table Using the MySQL ADD COLUMN Statement The MySQL ALTER TABLE statement is used to modify an existing table. You can use…

PHP MySQL: Working with BLOBs A BLOB (Binary Large Object) is a data type in MySQL used to store binary data such as images, audio, video, or other m…

PHP MySQL: Call MySQL Stored Procedures Calling MySQL-stored procedures from PHP is a powerful way to encapsulate complex database logic in reusable …

PHP MySQL: Delete Data Deleting data in MySQL using PHP involves executing an SQL DELETE statement. This allows you to remove one or more rows from …

PHP MySQL: Update Data Updating data in a MySQL database using PHP involves executing an SQL UPDATE statement with the desired changes. This is ofte…

PHP MySQL: Insert Data Into a Table Inserting data into a MySQL database using PHP involves executing an SQL INSERT INTO statement. This allows you …

PHP MySQL: Querying Data from a Database Querying data from a MySQL database using PHP involves executing SQL SELECT statements. The retrieved data …

MySQL WHERE Clause The WHERE clause in MySQL is used to filter records in a query. It specifies a condition that must be true for rows to be include…

MySQL GRANT Statement The GRANT statement in MySQL is used to assign specific privileges to users. These privileges determine what actions the user …

MySQL UPDATE Statement The UPDATE statement in MySQL is used to modify existing records in a table. It allows you to update one or more rows based o…

MySQL Views A view in MySQL is a virtual table based on the result of an SQL query. Unlike a physical table, a view does not store data. Instead, it…

MySQL Triggers A trigger in MySQL is a database object that is automatically executed or fired when a specific event occurs on a table. Triggers are…

How to Load the Sample Database into MySQL Server A sample database is useful for testing queries, learning SQL, or experimenting with database featu…

MySQL Stored Procedures A stored procedure in MySQL is a reusable set of SQL statements stored in the database. It allows you to encapsulate logic, …

Basic MySQL Tutorial

MySQL ALTER TABLE Statement The ALTER TABLE statement in MySQL is used to modify an existing table's structure. It allows you to add, delete, or…

MySQL DELIMITER Command The DELIMITER command in MySQL is used to change the default statement delimiter (semicolon ; ) to another character or sequ…

MySQL SELECT Statement The SELECT statement in MySQL is used to retrieve data from one or more tables in a database. It is one of the most fundament…

Comprehensive MySQL Tutorial MySQL is a popular open-source relational database management system (RDBMS) used for storing and managing data. It'…

MySQL LIKE Operator The LIKE operator in MySQL is used to search for a specified pattern in a column. It is typically used with SELECT , UPDATE , or…

MySQL SHOW DATABASES Command The SHOW DATABASES command in MySQL is used to list all the databases available on the MySQL server. It helps you to vi…

Install MySQL on Ubuntu

How to Connect to MySQL Server Connecting to a MySQL server is a basic step to interact with your database. Below are various methods and examples fo…

How to Install MySQL on CentOS Installing MySQL on CentOS is a straightforward process. Follow these steps to set up MySQL on CentOS 7 or CentOS 8.

How to Install MySQL Installing MySQL involves downloading the MySQL server package and setting it up on your system. Follow the instructions below f…

MySQL INSERT INTO SELECT Statement The INSERT INTO SELECT statement in MySQL is used to copy data from one table and insert it into another table. T…

Understanding SQL GROUP BY Clause The SQL GROUP BY clause is used to organize rows into groups based on one or more columns. It's particularly …

MySQL DELETE Statement The DELETE statement in MySQL removes rows from a table based on specified conditions. It is a powerful command that, if not …

MySQL Sample Database A MySQL sample database provides a pre-built schema with tables and data for testing, learning, and practice. It is commonly u…

Understanding the MySQL RANK() Function The RANK() function in MySQL is a window function that assigns a unique rank to each row within a result s…

SQL CHECK Constraint The CHECK constraint in SQL is used to enforce specific rules for the values that a column can hold. It ensures that all rows i…

SQL NOT NULL Constraint The NOT NULL constraint in SQL ensures that a column cannot have a NULL value. It enforces that every row must have a value…

SQL UNIQUE Constraint The UNIQUE constraint in SQL ensures that all the values in a specified column or a combination of columns are distinct. It pr…

SQL FOREIGN KEY Constraint A FOREIGN KEY is a column (or a set of columns) in one table that refers to the PRIMARY KEY in another table. It creates…

Understanding SQL ALTER TABLE The SQL ALTER TABLE statement is used to modify the structure of an existing table. It allows you to add, delete, or c…

SQL DROP TABLE The DROP TABLE statement in SQL is used to delete an entire table from the database. This operation removes both the table structure …

SQL TRUNCATE TABLE The TRUNCATE TABLE statement in SQL is used to quickly delete all rows from a table without removing its structure or associate…

Understanding SQL CREATE TABLE The SQL CREATE TABLE statement is used to create a new table in a database. A table consists of columns and rows, whe…

Understanding SQL INSERT The SQL INSERT statement is used to add new rows of data into a table. It is one of the fundamental Data Manipulation Lan…

Understanding SQL UPDATE The SQL UPDATE statement is used to modify existing records in a table. It allows you to update one or more rows based on s…

Understanding SQL DELETE The SQL DELETE statement is used to remove rows from a table. It allows you to delete specific rows based on conditions or …

Understanding the SQL ANY Operator The SQL ANY operator is used in conjunction with comparison operators (like = , < , > , <= , >= , an…

Understanding SQL ALL The SQL the  ALL operator is used with comparison operators ( = , != , < , > , <= , >= ) to compare a value agains…

Understanding the SQL EXISTS Operator The SQL EXISTS operator is used to check the existence of records returned by a subquery. It returns TRUE if…

Understanding SQL MINUS The SQL MINUS operator is used to compare two SELECT queries and return the rows that are present in the first query but no…

Understanding SQL Subqueries A subquery, also known as an inner query or nested query, is a query within another SQL query. The subquery provides dat…

SQL Correlated Subquery A correlated subquery in SQL is a subquery that refers to columns from the outer query. It is evaluated once for every row p…

SQL CUBE The CUBE operator in SQL is an extension of the GROUP BY clause. It allows you to generate subtotals for all combinations of columns speci…

SQL UNION The UNION operator in SQL combines the result sets of two or more SELECT queries into a single result set. It removes duplicate rows by d…

SQL ROLLUP The ROLLUP operator in SQL is an extension of the GROUP BY clause. It enables hierarchical or cumulative subtotals and a grand total in …

SQL INTERSECT The INTERSECT operator in SQL returns the common rows (intersection) between two or more SELECT queries. The output includes only row…

Understanding SQL HAVING The SQL HAVING clause is used to filter groups of data after aggregation. Unlike the WHERE clause, which filters rows befo…

SQL GROUPING SETS SQL GROUPING SETS The GROUPING SETS clause in SQL allows you to create multiple groupings in a single query, making it easier to…

SQL GROUP BY The GROUP BY statement in SQL is used to arrange identical data into groups. It is typically used with aggregate functions (like COUNT …

Understanding the SQL MAX() Function The MAX() function in SQL is an aggregate function used to retrieve the largest value in a column. It is benef…

Understanding SQL COUNT The SQL COUNT function is an aggregate function that returns the total number of rows in a table or the number of rows that …

What is SQL SUM()? The SUM() function in SQL calculates the total sum of a numeric column. It is one of the aggregate functions in SQL and is often …

What is SQL MIN()? The MIN() function in SQL is an aggregate function that returns the smallest (minimum) value from a specified column. It is commo…

What is SQL AVG()? The AVG() function in SQL is used to calculate the average (mean) value of a numeric column. It is a part of SQL's aggregate …

Understanding SQL CROSS JOIN The SQL CROSS JOIN is a type of join that returns the Cartesian product of two tables. This means that it will combine …

Understanding SQL SELF JOIN A SQL SELF JOIN is a join operation where a table is joined with itself. This is useful when a table contains a hierarch…

What Are SQL Aggregate Functions? SQL aggregate functions perform calculations on a set of values and return a single value. These functions are comm…

Understanding the SQL CASE Statement The SQL CASE statement is a powerful conditional expression that allows you to execute logic within an SQL que…

Understanding SQL ALIAS An SQL ALIAS is a temporary name assigned to a table or a column in a query. It improves readability and convenience, especi…

Understanding SQL INNER JOIN The SQL INNER JOIN is a type of join that retrieves records from two or more tables based on a related column. It ret…

Understanding SQL LEFT JOIN The SQL LEFT JOIN (or LEFT OUTER JOIN ) retrieves all records from the left table (first table) and the matched records …

Understanding SQL FULL OUTER JOIN The SQL FULL OUTER JOIN retrieves records from both the left and right tables. It returns all rows when there is a…

Understanding SQL IS NULL In SQL, the IS NULL operator is used to check if a value in a column is NULL . A NULL value represents missing, undefined…

Understanding the SQL NOT Operator The SQL NOT operator is used to negate a condition in a query. It is a logical operator that returns TRUE if th…

What is the SQL IN Operator? The IN operator in SQL is used to filter rows based on whether a column value matches any value in a specified list. I…

What is the SQL LIKE Operator? The LIKE operator in SQL is used to search for a specified pattern in a column. It is commonly used in WHERE clause…

What are SQL Logical Operators? SQL Logical Operators are used to combine multiple conditions in a query WHERE or HAVING clause to refine the data …

What is the SQL AND Operator? The AND operator in SQL is a logical operator used in the WHERE or HAVING clause to combine two or more conditions.…

What is the SQL OR Operator? The SQL OR operator is a logical operator used to combine two or more conditions in an WHERE or HAVING clause. It …

What is the SQL BETWEEN Operator? The BETWEEN operator in SQL is used to filter rows based on a range of values. It is often used in the WHERE or …

SQL Comparison Operators

Understanding SQL LIMIT The SQL LIMIT clause is used to restrict the number of rows returned by a query. It is particularly useful when working with…

Understanding SQL FETCH The SQL FETCH clause is used to retrieve a specific number of rows from a query result. It is often combined with the OFFSET…

Understanding SQL WHERE Clause The SQL WHERE clause is used to filter records in a database table based on specific conditions. It allows you to re…

Understanding SQL DISTINCT The SQL DISTINCT keyword is used to remove duplicate rows from the result set of a query. It ensures that only unique val…

Understanding SQL SELECT The SQL SELECT statement is used to retrieve data from one or more tables in a database. It is one of the most fundamental …

Understanding SQL ORDER BY Clause The SQL ORDER BY clause is used to sort the result set of a query based on one or more columns. By default, it so…

SQL Sample Database A sample database is a simplified dataset used to demonstrate SQL concepts like creating tables, querying data, applying constrai…

What is SQL? SQL (Structured Query Language) is a standard programming language used for managing and manipulating relational databases. It is the ba…

What is SQL Syntax? SQL (Structured Query Language) syntax refers to the rules and structure used to write SQL statements. These statements are the f…

SQL Tutorial: A Complete Beginner's Guide Structured Query Language (SQL) is the standard language used for managing and manipulating relational …

Introduction to Shell Scripting Shell scripting is the process of writing a series of commands for the shell (command-line interpreter) to execute. A…

Hello World in Bash The "Hello World" program is a simple example often used to demonstrate the basics of a programming or scripting langua…

Best Linux Command Line Text Editors Linux offers a variety of powerful command-line text editors for all types of users, from beginners to advanced …

Variables in Bash Variables in Bash are used to store and manipulate data. They are essential for writing flexible and reusable scripts.

Comments in Bash Comments in Bash scripts are used to add explanations, improve readability, and document the purpose or behavior of code. They are i…

Quotes in Bash In Bash scripting, quotes are used to handle strings and control how special characters are interpreted. Understanding when and how to…

Debugging a Bash Script Debugging Bash scripts is an essential skill for identifying and fixing issues in your code. Bash provides several built-in t…

Bash Exit Codes In Bash scripting, exit codes (or return codes) indicate the success or failure of a script or command. They are essential for debugg…

Command Line Arguments in Shell Scripts Command line arguments allow users to pass input directly to a script when executing it. This makes scripts d…

Including Files in Bash In Bash scripting, you can include external files to organize code, reuse functions, or import configurations. This practice …

Shell Commands: A Comprehensive Guide Shell commands are the fundamental building blocks for interacting with the operating system in the command-lin…

Handling User Input in Bash User input is a crucial aspect of interactive Bash scripts. Bash provides various methods to capture and process user inp…

Arithmetic Operations in Bash Bash provides support for performing arithmetic operations using a variety of methods. These operations are essential f…

Numeric Comparisons in Bash Numeric comparisons in Bash allow you to evaluate relationships between numbers, such as equality, inequality, and order.…

String Comparisons in Bash String comparisons in Bash allow you to evaluate relationships between strings, such as equality, inequality, and pattern …

If-Else Statement in Bash The if-else statement in Bash is a conditional construct used to execute a block of code based on whether a condition eval…

For Loop in Bash The for loop in Bash is used to iterate through a list of items, files, numbers, or any set of values. It executes a set of command…

While Loop in Bash The while loop in Bash is used to execute a block of code repeatedly as long as a specified condition evaluates to true . It'…

Switch (Case) Statement in Bash The case statement in Bash is a conditional construct that simplifies checking multiple conditions. It’s often used …

Understanding Functions in Bash What is a Function in Bash? A function in Bash is a reusable block of code designed to perform a specific task. Funct…

How to Perform a Git Cleanup of Branches and Commits Managing branches and commits efficiently in Git is essential for maintaining a clean and organi…

Here’s a step-by-step guide to configure Nginx on Red Hat Linux. I’ll outline the steps clearly and provide detailed instructions. You can use thes…

Essential Red Hat Linux Commands Red Hat Enterprise Linux (RHEL) is widely used in enterprise environments, offering robust performance, stability,…

Hotel Management System Using Laravel 11 Hello dear, This tutorial will show you how to clone a Laravel project from Gitlab. let’s discuss the steps …