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Write a SQL query to find the sum of sales of current row and previous 2 rows in a product group? Sample outcome of the
- Write a SQL query to find the sum of sales of current row and previous 2 rows in a product group? Sample outcome of the SQL statement is given below.
PRODUCT_ID QUANTITY CALC_SALES
------------------------------------------------------------
100 25 25
100 16 41
100 12 53
200 20 20
200 15 35
200 14 49
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Database Processing Fundamentals, Design, and Implementation
Authors: David M. Kroenke, David J. Auer
14th edition
