I'm working to convert the following PostgreSQL query to MariaDB. My converted query is returning the field New Users incorrectly. What am I doing wrong?
Original, PostgreSQL working query:
WITH
users AS (
SELECT user_id,
MIN(occurred_at) AS activated_at
FROM modeanalytics.retention_events
WHERE occurred_at <= NOW()
GROUP BY 1
),
events AS (
SELECT user_id,
event_name,
occurred_at
FROM modeanalytics.retention_events
WHERE occurred_at <= NOW()
)
SELECT *
FROM (
SELECT *,
MAX(CASE WHEN user_period = 0 THEN retained_users ELSE NULL END) OVER (PARTITION BY "Signup Date") AS "New Users",
retained_users/
MAX(CASE WHEN user_period = 0 THEN retained_users ELSE NULL END) OVER (PARTITION BY "Signup Date")::FLOAT AS retention_rate,
(LAG(retained_users) OVER (PARTITION BY "Signup Date" ORDER BY "Signup Date") - retained_users)/
MAX(CASE WHEN user_period = 0 THEN retained_users ELSE NULL END) OVER (PARTITION BY "Signup Date")::FLOAT AS churn_rate,
(LAG(retained_users) OVER (PARTITION BY "Signup Date" ORDER BY "Signup Date") - retained_users)/
LAG(retained_users) OVER (PARTITION BY "Signup Date" ORDER BY "Signup Date")::FLOAT AS churn_rate_from_previous_period
FROM (
SELECT DATE_TRUNC('month',u.activated_at) AS "Signup Date",
(EXTRACT('year' FROM e.occurred_at) - EXTRACT('year' FROM u.activated_at)) * 12 +
(EXTRACT('month' FROM e.occurred_at) - EXTRACT('month' FROM u.activated_at)) -
CASE WHEN (CEILING(DATE_PART('day',e.occurred_at) - DATE_PART('day',u.activated_at))) < 0 THEN 1 ELSE 0 END AS user_period,
COUNT(DISTINCT e.user_id) AS retained_users
FROM users u
JOIN events e
ON e.user_id = u.user_id
AND e.occurred_at >= u.activated_at
WHERE u.activated_at >= DATE_TRUNC('month',NOW()) - INTERVAL '25 month'
GROUP BY 1,2
) x
) z
WHERE user_period != 0
ORDER BY 1,2
And here is my latest attempt to rewrite for MariaDB:
WITH
users AS (
SELECT id,
MIN(onboarded_at) as onboarded_at
FROM users
WHERE onboarded_at <= NOW()
GROUP BY 1
),
events AS (
SELECT receiver_id,
type,
created_at
FROM events
WHERE created_at <= NOW()
)
SELECT *
FROM (
SELECT *,
MAX(CASE WHEN user_period = 0 THEN retained_users ELSE NULL END) OVER (PARTITION BY "Signup Date") AS "New Users",
(retained_users /
MAX(CASE WHEN user_period = 0 THEN retained_users*1.0 END) OVER (PARTITION BY "Signup Date")) AS retention_rate,
(LAG(retained_users) OVER (PARTITION BY "Signup Date" ORDER BY "Signup Date") - retained_users)/
MAX(CASE WHEN user_period = 0 THEN retained_users ELSE NULL END) OVER (PARTITION BY "Signup Date") AS churn_rate,
(LAG(retained_users) OVER (PARTITION BY "Signup Date" ORDER BY "Signup Date") - retained_users)/
LAG(retained_users) OVER (PARTITION BY "Signup Date" ORDER BY "Signup Date") AS churn_rate_from_previous_period
FROM (
SELECT
DATE_FORMAT(u.onboarded_at, '%Y-%m-01') AS "Signup Date",
(EXTRACT(YEAR FROM e.created_at) - EXTRACT(YEAR FROM u.onboarded_at)) * 12 +
(EXTRACT(MONTH FROM e.created_at) - EXTRACT(MONTH FROM u.onboarded_at)) -
CASE WHEN (CEILING(DAY(e.created_at) - DAY(u.onboarded_at))) < 0 THEN 1 ELSE 0 END AS user_period,
COUNT(DISTINCT e.receiver_id) AS retained_users
FROM users u
JOIN events e
ON e.receiver_id = u.id
AND e.created_at >= u.onboarded_at
WHERE u.onboarded_at >= DATE_FORMAT(CURDATE(), '%Y-%m-01 00:00:00') - INTERVAL 5 MONTH
GROUP BY 1,2
) x
) z
WHERE user_period != 0
ORDER BY 1,2
My attempt at rewriting for MariaDB is not outputting the column "New Users" correctly. What am I doing wrong?
