Compare and update data between two databases


I was helped by one of the members with the query below, but a closer look at the query doesn't works. Any assistance greatly appreciated. Thanks!

Here is the query:

USE Inventory
SET [Available Inventory] = (SELECT [Available Inventory]
        FROM Items_Update.. Updates U
        WHERE U.[Item Number] = Items.[Item Number])

Example per screenshot:
- The query compare the 'Item Number' between the Inventory and Items_Update databases.
- If the Item Number matches, then update the "Available Inventory" number, which is 22 to the "Available Inventory" field in the Inventory database.
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Member_2_7967487Author Commented:
Pawan KumarDatabase ExpertCommented:
Pls try this..

USE Inventory

SET a.[Available Inventory] = U.[Available Inventory]
FROM Items a
INNER JOIN Items_Update.. Updates U
ON U.[Item Number] = a.[Item Number] 

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Pawan KumarDatabase ExpertCommented:
Have you tried the above approach?
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Member_2_7967487Author Commented:
I have an error.

Pawan KumarDatabase ExpertCommented:
can you provide me the schema for both the tables ?
Member_2_7967487Author Commented:
I updated the line below and it works!  Thank you very much, Pawan!!
[ Available Inventory ]

SET a.[Available Inventory] = U.[ Available Inventory ]
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