Aggregate Functions in SQL - COUNT, SUM and AVG | MS SQL Server Tutorial in Hindi
In this tutorial, we'll learn to use the SQL aggregate functions i.e. COUNT, SUM, and AVG. These functions are used to perform the calculations on multiple rows of a specific column of a table.
The SQL COUNT function is used to count the number of rows in a table. It can work with numeric and non-numeric data types. The SQL SUM function is used to calculate the sum of selected rows of a specific column. It works with numeric data types only. The SQL AVG function is used to calculate the average value of selected rows of a specific column.
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Timeline:
00:00 Introduction
00:20 Database overview
00:49 COUNT function
02:04 AVG function
02:55 SUM function
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