UPDATE
T1
SET
T1.Inci = T2.Inci
FROM
T1
INNER JOIN
T2
ON
T1.Brands = T2.Brands
AND
T1.Category= T2.Category
AND
T1.Date = T2.Date
UPDATE
T1
SET
T1.Inci = T2.Inci
FROM
T1
INNER JOIN
T2
ON
T1.Brands = T2.Brands
AND
T1.Category= T2.Category
AND
T1.Date = T2.Date