Home » SQL SERVER » SQL Functions » Analytic Functions

Analytic Functions

SQL Server Analytic functions calculate an aggregate value based on a group of rows. Unlike aggregate functions, however, analytic functions can return multiple rows for each group.

SQL Server LAST_VALUE Function

SQL Server LAST_VALUE function is a Analytic function which returns the Last value in an ordered set of values. 

SQL Server FIRST_VALUE Function

SQL Server FIRST_VALUE function is a Analytic function which returns the first value in an ordered set of values.

SQL Server Lag Function

SQL Server LAG() function is a Analytics Functions that provides access to a row at a given physical offset that comes before the current row.

SQL Server Lead Function

SQL Server LEAD() function is a Analytics function that provides access to a row at a specified physical offset which follows the current row.

Basically, LEAD() function provides access to a row at a given physical offset that follows the current row.