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Using data from one table to update another table
Posted by: Jeff Norton
Date: March 23, 2006 08:57PM

I have two tables one called Vendor and the other called Inventory

+ Vendor

+ Inventory
+ Description
+ Vendor_Name
+ Price
+ Weight

Currently the Vendor_Name in both tables has the same value so I can do

WHERE Vendor.Vendor_Name = Inventory.Vendor_Name

Now the hard part. I would like to run a query that Updates the Inventory.Vendor_Name table with the value of the Vendor.Vendor_ID

T-SQL does it this way

UPDATE Inventory
SET Inventory.Vendor_Name = (SELECT Vendor.Vendor_ID
FROM Vendor, Inventory
WHERE Vendor.Vendor_Name = Inventory.Vendor_Name);

But this will not work in MySQL

The statement

SELECT Vendor.Vendor_ID
FROM Vendor, Inventory
WHERE Vendor.Vendor_Name = Inventory.Vendor_Name

works great on its own but I really need to get this in an UPDATE statement

Any ideas would be greatly appreciated and don't say go back to Oracle because thats not a option!

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