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Stored Procedures

Stored procedures may help store the SQL code, which can be reused by different applications for performing calculations on the database server. In this task, you will work with the new version of a ShopDB database for online store with the following tables:

  • Countries, which has the following columns: ID and Name.
  • Products, which has the following columns: ID and Name.
  • Warehouses, which has the following columns: ID, Name, Address, and CountryID.
  • ProductInventory, which has the following columns: ID, ProductID, WarehouseAmount, and WarehouseID.

Prerequisites

  1. Install and configure a MySQL database server on a Virtual Machine and connect to it with the MySQL client.
  2. Fork this repository.

Requirements

Develop a stored procedure, which will show the information about a warehouse's product amount. For that, you need to write the SQL code in the task.sql file:

  1. Connect to your database server.
  2. If you already have the ShopDB database on your database server from the previous tasks, delete it using the DROP DATABASE ShopDB; statement.
  3. Write a code for the stored procedure creation in the task.sql file.

The stored procedure should meet the following requirements:

  1. It should be called get_warehouse_product_inventory.
  2. It should accept a single parameter — ID of the Warehouse.
  3. It should return a table with a list of product names, along with their amount in the warehouse.
Hint

Use the SELECT statement with JOIN in the stored procedure body.

How to Test Yourself

Just in case you want to test your script on your database before submitting a pull request, you can do it by performing the following actions:

  1. Drop the ShopDB database using the DROP DATABASE ShopDB; statement if you already have it on your database server.
  2. Run the database creation script (create-database.sql) on your database server.
  3. Run the script you wrote in the task.sql on your database server.
  4. Run the test.sql script on your database. If the script execution is finished without errors and if in the output you are getting only 1 item (AwersomeProduct, count — 4242) you are ready to submit a pull request.