SQL Tutorials

SQL Case Statement -The case statement is the heart of SQL. Because It can control the execution of different sets of statements. It handles the WHEN/THEN statement.  By using it, we can filter & optimize queries through selection rows that satisfied our requirements. We can also use it in an insert, select, update or delete … Read more

In this tutorial, we are going to discuss SQL aggregate functions like COUNT(), SUM(), MAX(), MIN(). AVG() with an example, definition & syntax. you will learn it in some simple steps that are very simple to understand. Aggregate Functions in SQL Aggregate functions calculate the string & numeric values of multiple records of a particular … Read more