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Commit 1627f4ef authored by Andreas Brandl's avatar Andreas Brandl
Browse files

Replace OR clause with UNION.

parent c3ee1cfbb803
......@@ -325,7 +325,13 @@ def self.public_or_visible_to_user(user = nil)
levels = Gitlab::VisibilityLevel.levels_for_user(user)
where('EXISTS (?) OR projects.visibility_level IN (?)', authorized, levels)
authorized_projects = where('EXISTS (?)', authorized).select(:id)
visible_projects = where('visibility_level IN (?)', levels).select(:id)
# We use a UNION here instead of OR clauses since this results in better
# performance.
union =[authorized_projects, visible_projects])
where(" IN (#{union.to_sql})") # rubocop:disable GitlabSecurity/SqlInjection
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