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What is more efficient to use in SQL Server 2005: PIVOT or MULTIPLE JOIN?
For example, I got this query using two joins:
SELECT p.name, pc1.code as code1, pc2.code as code2
FROM product p
INNER JOIN product_code pc1
ON p.product_id=pc1.product_id AND pc1.type=1
INNER JOIN product_code pc2
ON p.product_id=pc2.product_id AND pc2.type=2
I can do the same using PIVOT:
SELECT name, [1] as code1, [2] as code2
FROM (
SELECT p.name, pc.type, pc.code
FROM product p
INNER JOIN product_code pc
ON p.product_id=pc.product_id
WHERE pc.type IN (1,2)) prods1
PIVOT(
MAX(code) FOR type IN ([1], [2])) prods2
Which one will be more efficient?