Souy Soeng

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…