Aggregate bitwise-OR in a subquery

Question

Given the following table:

CREATE TABLE BitValues ( n int )

Is it possible to compute the bitwise-OR of n for all rows with

Answer 1

Your best bet for a readable and re-usable solution would be to write a a custom CLR Aggregate to perform bitwise or. A tutorial for creating this type of operation can be found here: http://msdn.microsoft.com/en-us/library/91e6taax(VS.80).aspx