Question

I have a temp table variable with a bunch of columns:

 Declare @GearTemp table
    (
        ItemNumber varchar(20),
        VendorNumber varchar(6),
        ItemStatus varchar(20),
        Style varchar(20),
        ItemName varchar(100),
        ItemDescription varchar(1000),
        Color varchar(50),
        [Size] varchar(50),
        ItemCost decimal(9,4),
        IsQuickShipFl bit,
        IsEmbroiderable bit,
        IsBackOrderable bit,
        LoadDate smalldatetime
    )

It gets filled with data from another table via an insert statement, and I want to take that data and update my Products table. If possible, I would like to do something like this:

Update Products blah blah blah  all columns where itemnumbers match up
SELECT * FROM @GearTemp FT 
WHERE EXISTS (SELECT P.ItemNumber FROM Products P WHERE FT.ItemNumber = P.ItemNumber)

Is that possible to do? If it’s not, please point me in the right direction.

Answer 1

If I understand you correctly, you can use something like this:

UPDATE p SET X = gt.X, Y = gt.Y -- etc... (not sure whether your column names match up)
FROM Products p
    INNER JOIN @GearTemp gt ON p.ItemNumber = gt.ItemNumber

Note that this will only work if, as you stated in the comments above, there is only ever one entry in @GearTemp for each ItemNumber.