SQL Server Group By Bitwise Or? [duplicate]

This question already has answers here: Closed 11 years ago.

开发者_开发问答

Possible Duplicates:

Aggregate bitwise-OR in a subquery

Update column to be different aggregate values

Let's say I have a table with the following records.

Role | AuthorizationNum

1      11
2      12
1      16
2      11

What I want to do is group by Role, the OR (BIT OR using |) AuthorizationNum. So my select should be 2 records.

Role | AuthorizationNum

1      27
2      15

Because...

11 | 16 = 27

11 | 12 = 15

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By default mysql supports this but not sql server. But you can get around it using this: Update column to be different aggregate values