List all Mautic campaign delays

mautic-campaign-delays-lite.sql

-- All mautic campaign delays merged. Two queries (the first is important). Takes under 10s.
-- Depends on the PR of soft-deleted campaign events.
SET @@group_concat_max_len = 10000000000000;
SELECT *
FROM (
	SELECT NULL as campaign_id,
		NULL as campaign_name,
		NULL as event_id,
		NULL as event_name,
		NULL as lead_count,
		NULL as type,
		NULL as avg_delay_s 
	FROM (
		SELECT @campaigns := (
			SELECT GROUP_CONCAT(c.id SEPARATOR ',')
			FROM campaigns c
			WHERE c.is_published = 1
		)
		UNION ALL
		SELECT @events := (
			SELECT GROUP_CONCAT(ce.id SEPARATOR ',')
			FROM campaign_events ce
			WHERE FIND_IN_SET(ce.campaign_id, @campaigns) > 0
			-- Use the following if you have the Soft Delete camapign event PR merged/patched.
			-- AND ce.is_published = 1
		)
	) vars
UNION ALL
	SELECT
		cl.campaign_id AS campaign_id,
		c.name as campaign_name,
		NULL as event_id,
		NULL as event_name,
		count(cl.lead_id) AS lead_count,
		'kickoff' as 'type',
		ROUND(AVG(UNIX_TIMESTAMP() - UNIX_TIMESTAMP(cl.date_added))) as avg_delay_s
	FROM campaign_leads cl
	LEFT JOIN campaigns c
		ON c.id = cl.campaign_id
	WHERE (NOT EXISTS (
		SELECT null FROM campaign_lead_event_log e
		WHERE
			cl.lead_id = e.lead_id
			AND e.campaign_id = cl.campaign_id
		))
	AND cl.date_added > DATE_ADD(NOW(), INTERVAL -1 HOUR)
	AND FIND_IN_SET(cl.campaign_id, @campaigns) > 0
	GROUP BY cl.campaign_id
UNION ALL
	SELECT
		el.campaign_id,
		c.name as campaign_name,
		el.event_id,
		ce.name as event_name,
		COUNT(el.lead_id) as lead_count,
		'scheduled' as 'type',
		ROUND(AVG(UNIX_TIMESTAMP() - UNIX_TIMESTAMP(el.trigger_date))) as avg_delay_s
	FROM campaign_lead_event_log el
	LEFT JOIN campaigns c
		ON c.id = el.campaign_id
	LEFT JOIN campaign_events ce
		ON ce.id = el.event_id
	WHERE
		el.is_scheduled = 1
		AND el.trigger_date <= NOW()
		AND FIND_IN_SET(el.event_id, @events) > 0
	GROUP BY el.event_id
) combined
WHERE avg_delay_s > 0
ORDER BY avg_delay_s DESC;

Amazing, please some basic instructions on how to use this, ty!