MySQL

Joins in SQL helps to combine rows of different tables based on a common column. Customer ID Name 1 Alice 2 Bob 3 Charlie Order ID Customer ID Product 101 4 Laptop 102 2 Phone 103 5 Laptop INNER JOIN returns matching rows from both tables. Customer ID Name Order ID Product 2 Bob 102 […]

Window function calculates values over all rows and provide a value for each row in contrast to the Aggregate function which provides single value for the group. Window function in SQL always require the OVER() clause, which is the window holding the set of rows over which the function operates.The functions are generally grouped into