F-SECURE ANTI-VIRUS FOR MICROSOFT EXCHANGE 8.00 Administrator's Manual page 268

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Click Query to start the search. The Quarantine Query Results page is
displayed once the query is completed.
If you want to clear all the fields on the Query page, click Reset.
Using Wildcards
You can use the following SQL wildcards in the quarantine queries:
Wildcard
%
_ (underscore)
[ ]
[^]
If you want to search for '%', '_' and '[' as regular symbols in one of
the fields, you must enclose them into square brackets: '[%]', '[_]',
'[[]'
Explanation
Any string of zero or more characters.
Any single character.
Any single character within the specified
range ([a-f]) or set ([abcdef]).
Any single character not within the specified
range ([^a-f]) or set ([^abcdef]).