Multiple Update with multiple condition

I'm having an Employee table with a Salary field. How can we increate the
salary of the employees with following conditions:
1) salary between 1000 and 10000 : increase 25%
2) salary between 10000 and 20000 : increase 15%
3) salary between 20000 and 30000 : increase 5%

Surely you can create a cursor to solve this. But the question is, Is it
possible to solve this in a single query, if no what is most optimized
way?Try:

UPDATE Employee
SET salary = salary *
CASE
WHEN salary>=1000 AND salary<10000 THEN 1.25
WHEN salary>=10000 AND salary<20000 THEN 1.15
WHEN salary>=20000 AND salary<30000 THEN 1.5
END
WHERE salary>=1000 AND salary<30000

--
David Portas
SQL Server MVP
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