CREATE VIEW sys.conversation_groups AS
SELECT cg.conversation_group_id,
cg.service_id,
cg.is_system
FROM sys.conversation_groups$ cg
JOIN sys.syssingleobjrefs r ON r.depid = cg.service_id AND r.class = 21 AND r.depsubid = 0 -- SRC_SVCTOQUEUE
WHERE has_access('CO', r.indepid) = 1
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