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Window Functions in PostgreSQL

Introduction
2. Table stock_change
ROWS
RANGE
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Summary

Instruction

Alright, another table.

Exercise

Select all the information from stock_change table.

A single row in stock_change means that either a given number of products left the warehouse, or were delivered to the warehouse.

You can find:

  • the id of the change.
  • the product_id.
  • the quantity (positive values mean delivery, negative values mean the products left the warehouse).
  • the changed when it happened.