CREATE TABLE IF NOT EXISTS platform_customer_hydrogen_daily (
 vin VARCHAR(32) NOT NULL,
 stat_date DATE NOT NULL,
 protocol VARCHAR(32) NOT NULL,
 source_key VARCHAR(256) NOT NULL,
 hydrogen_km DECIMAL(18,3) NOT NULL,
 observed_km DECIMAL(18,3) NOT NULL,
 classified_km DECIMAL(18,3) NOT NULL,
 sample_count BIGINT NOT NULL,
 known_sample_count BIGINT NOT NULL,
 interval_count BIGINT NOT NULL,
 rejected_intervals BIGINT NOT NULL,
 first_event_time DATETIME(3) NOT NULL,
 last_event_time DATETIME(3) NOT NULL,
 algorithm_version VARCHAR(64) NOT NULL,
 calculated_at DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
 PRIMARY KEY(vin,stat_date,protocol,source_key),
 KEY idx_date(stat_date)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;