MySQL Database

Your update syntax suggests you are working with MYSQL db.

It always helps to format your code into a more readable and maintainable style, for example:

Update products,
       orderdetails,
       orders
set    products.UnitsInStock = (products.UnitsInStock - orderdetails.Quantity),
       ShippedDate = current_date()
where  products.ProductID = orderdetails.ProductID
and    orders.OrderID = orderdetails.OrderID
and   (ShippedDate is null and
       orderdetails.Quantity < UnitsInStock)
and    orders.OrderID  = 11039;

The fact the update is updating rows you don't want it to means you haven't got the join to the three tables correct.

Write it as a select statement first then convert it into an update when you are sure it will update the rows you want it to.

...and as this looks like a mysql question you be better off asking your question here or

here http://forums.mysql.com/

Gayathri Venugopal wrote:
Hi, I need to update UnitinStock and Shipped Date of products based on these conditions.
1)When the shipped date is null and
2) when Quantity < Unit in stock.
But my query is updating Shipped date of all the orders even when this condition Quantity < Unit in stock is not satisfied .
How do I satisfy these 2 conditions and update colums:
Update products,orderdetails,orders
set products.UnitsInStock = (products.UnitsInStock - orderdetails.Quantity), ShippedDate = current_date()
where products.ProductID =orderdetails .ProductID and orders.OrderID = orderdetails.OrderID
and (ShippedDate is null and orderdetails.Quantity < UnitsInStock) and orders.OrderID = 11039

Please click on URL below & provide details as stated in #5 - #9 inclusive

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SELECT * FROM V$VERSION;

You were told two days ago, in a different thread you started, that this is NOT A MySQL FORUM.   Repeat:  This is NOT A MySQL FORUM.  Is that hard to understand?

***Moderator action (Timo): User, I moved you thread to the MySql space as it isn't about OracleDB.***