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