Souy Soeng

MySQL Self Join A Self Join is a regular join where a table is joined with itself. It is used when there is a need to compare rows within the same t…

MySQL CROSS JOIN The CROSS JOIN clause in MySQL generates a Cartesian product of two tables. It combines every row from the first table with every r…

MySQL RIGHT JOIN The RIGHT JOIN clause in MySQL retrieves all rows from the right table and the matching rows from the left table. If no match is fo…

MySQL LEFT JOIN The LEFT JOIN clause in MySQL retrieves all rows from the left table and the matching rows from the right table. If no match is foun…

MySQL INNER JOIN The INNER JOIN clause in MySQL is used to combine rows from two or more tables based on a related column between them. It returns o…

MySQL JOIN The JOIN  The clause in MySQL combines rows from two or more tables based on a related column. Joins are essential when retrieving data fr…

MySQL Alias An alias in MySQL is a temporary name given to a table or column for the duration of a query. Aliases make queries more readable, especia…

MySQL IS NULL The IS NULL operator in MySQL is used to check if a column's value is NULL . A NULL value represents missing or unknown data, and…

PHP MySQL: Transactions Transactions in MySQL allow you to execute a series of queries as a single unit of work. If any query fails, you can roll bac…