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From: emaratiyya <emaratiyya@hotmail.com>
To: pgsql-sql@postgresql.org
Subject: Re: Using count on a join, group by required?
Date: Mon, 13 Dec 2010 23:19:16 -0800 (PST)
Message-ID: <1292311156150-3304147.post@n5.nabble.com> (raw)
In-Reply-To: <AANLkTinYNWi1AQft188MBWj4n6OBfSQX1DdAO2Jf8wQu@mail.gmail.com>
References: <AANLkTinYNWi1AQft188MBWj4n6OBfSQX1DdAO2Jf8wQu@mail.gmail.com>


Hi,Please help me solving this problem. I appreciate..Thankyou.

Create the following table and insert few arbitrary records. 
Product (product_id, product_name, supplier_name, quantity, price_per_unit)
You are required to create PL/SQL package that achieves the following
functionalities:

•	Obtaining the product supplier name by using the product_id
•	Changing the price_per_unit by using the product_id
•	When changing the price of the product, you have to have PL/SQL code that
keeps the history of the prices. For this functionality you need to create
audit table: product_audit(product_id, old_price, new_price, date_of_change)
•	Updating the quantity by using the product_id
•	Get warning when the product level of stock (quantity) goes below certain
threshold (e.g. 10)

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