7 lines
329 B
SQL
7 lines
329 B
SQL
-- Add unique constraint on collaboration_sessions for (project_id, user_id)
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-- This ensures a user can only have one active session per project,
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-- and allows upsert operations for session management.
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ALTER TABLE collaboration_sessions
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ADD CONSTRAINT collaboration_sessions_project_user_unique
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UNIQUE (project_id, user_id);
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