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Update query question

Posted on 2011-09-26
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Last Modified: 2012-05-12
I have to Update 3 fields in the Nop_ProductVariant table
with the values from the "ProdOne" table, based on the SKU field which is nvarchar(100).
Being the SKU is not an "int" field, what it the best way to do the join?

UPDATE Nop_ProductVariant
SET   OldPrice =   , ProductCost =  , Downloads =  

INNER JOIN ??
WHERE ???      SKU =

SELECT SRP, Cost, DL
FROM ProdOne

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Question by:MikeMCSD
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3 Comments
 
LVL 19

Accepted Solution

by:
Bhavesh Shah earned 2000 total points
ID: 36599958

UPDATE A
SET   OldPrice =   SRP, 
ProductCost =  Cost, 
Downloads =  DL
FROM Nop_ProductVariant A INNER JOIN ProdOne B
ON A.SKU = B.SKU

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Author Comment

by:MikeMCSD
ID: 36600155
perfect, thanks
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LVL 1

Expert Comment

by:szefcyk
ID: 36600352
I'm assuming SKU is in both the Nop_ProductVariant and ProdOne tables....so you could try this...

DECLARE @OldPrice varchar(30)
DECLARE @ProductCost varchar(30)
DECLARE @Downloads int
DECLARE @SKU int
DECLARE @dynSQL nvarchar(1024)

SET @SKU = 1234
SELECT @OldPrice = SRP FROM ProdOne WHERE SKU = @SKU
SELECT @ProductCost = Cost FROM ProdOne WHERE SKU = @SKU
SELECT @Downloads =  DL FROM ProdOne WHERE SKU = @SKU

SET @dynSQL = 'UPDATE Nop_ProductVariant SET OldPrice = ' + @OldPrice + ', '+
	'ProductCost = ' + @ProductCost + ', Downloads = ' + CAST(@Downloads AS varchar) +
	' WHERE SKU = ' + CAST(@SKU AS varchar)

--PRINT @dynSQL
EXEC sp_executesql @dynSQL

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