Window functions and other analytical functions in SQL both analyze data, but differ in their scope and operation: - Window Functions: Operate within a specified window of rows using the OVER clause.

while the analytic functions refer to single rows within the frame. USE CASE: LEAD/LAG useful when calculating day-to-day deltas USE CASE: LEAD(column_name / column_name_2, 7) OVER(ORDER BY ..) use ...

Upon completion of this lab, you will be able to: Use window functions to perform complex analytical queries and gain insights ... DISTINCT, AS keywords. Built-in SQL functions such as COUNT, MAX, MIN ...

In this paper, a query optimization method and its SQL statements for a web BBS are proposed using Oracle's new facilities – a window-based analytic function and a function-based index. Also, the ...