<invoke name="query_sql"> <parameter name="sql">SELECT COUNT(*) AS row_count, MIN(date) AS first_date, MAX(date) AS last_date, COUNT(DISTINCT date) AS trading_days, COUNT(DISTINCT stock_name) AS stocks, COUNT(DISTINCT company_name) AS companies FROM raw.semi_conductor_se</parameter> <parameter name="purpose">Confirm row count and date coverage</parameter> <parameter name="source">raw</parameter> </invoke>