The case statement in MySQL is a conditional expression that returns a value based on one or more conditions. It is used to determine the result of a...
The COALESCE function in MySQL is used to return the first non-NULL value in a list of expressions. If all expressions are NULL, the function returns...
The IFNULL() function in MySQL is a useful tool that allows you to replace NULL values with a specified value. Points To Remember: The IFNULL()...
The EXISTS operator is a logical operator in MySQL used to test if a subquery returns any rows. The EXISTS operator returns a boolean value, either...
The HAVING clause in MySQL is used in conjunction with the GROUP BY clause to filter the results of a query based on aggregate values. It is used to...
The GROUP BY clause in MySQL is used to group rows in a result set based on one or more columns. It is often used in conjunction with aggregate...
