CREATE OR REPLACE VIEW type_stream_summary AS
WITH type_count AS ( SELECT type, stream_name, COUNT(id) AS message_count FROM messages GROUP BY type, stream_name ), total_count AS ( SELECT COUNT(id)::decimal AS total_count FROM messages ) SELECT type, stream_name, message_count, ROUND((message_count / total_count)::decimal * 100, 2) AS percent FROM type_count, total_count ORDER BY type, stream_name;