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Window Functions in PostgreSQL

Get to know tables
3. Table purchase
OVER()
Computations with OVER()
Aggregate functions with OVER()
OVER() and WHERE
Summary

Instruction

Fine. The last table is called purchase.

Exercise

Select all the information from table purchase.

This table keeps track of all items that are purchased by the departments. You can find the id of the purchase, the id of the department, the name of the item and the price paid for it.