how can I Update top 100 records in sql server

Question

I want to update the top 100 records in SQL Server. I have a table T1 with fields F1 and F2. T1 has 200 records. I want

Answer 1

You can also update from select using alias and join:

UPDATE  TOP (500) T
SET     T.SomeColumn = 'Value'
FROM    SomeTable T
        INNER JOIN OtherTable O ON O.OtherTableFK = T.SomeTablePK
WHERE   T.SomeOtherColumn = 1