Problem For reporting purposes we need to know how many users have signed up, but grouped into useful date range intervals (bins). We also need to know the total number of users in the same date bins. Solution The following query works by creating a common table expression (CTE) where the user.created_at column is transformed into a YEAR-MONTH string and a count of the number of users in that month “bin”. Then a window operation (OVER) is used generate a cumulative sum of the count WITH data as ( SELECT TO_CHAR(u.created_at,'yyyy-MM') AS yeardate, COUNT(*) FROM users u GROUP BY yeardate ORDER BY yeardate ) SELECT yeardate, count, SUM(count::int) OVER ( order by yeardate asc rows between unbounded preceding and current row ) AS cumulative FROM data The OVER incantation I copied from SO, so no idea if all those options are strictly required. It would be easy to change the size of the date bins by changing how yeardate is formatted.

We’ve got some similar ones in this topic if you’d like to test them out and see how they compare: [image] Weekly/Monthly/Yearly Signups Data & reporting memo These queries give a breakdown of how many new user accounts have been created within the timeframe, excluding staged and non-activated accounts. The totals are broken down by number of signups each week/month/year, a running total for the time period selected, and a total number to date which includes all previous signups. NB: If a user is deleted their records no longer appear in the database and will therefore no longer be included in the query results. This can lead to variations wh…

[image] JammyDodger: We’ve got some similar ones in this topic if you’d like to test them out and see how they compare Oh nice! Thanks. I thought I’d searched, clearly not well enough or insufficient secret-sauce. That would have saved me some time … sigh

New user signups by month with running total

Community Building Data & reporting

aidanheerdegen (Aidan Heerdegen) January 18, 2024, 1:43pm 3

Oh nice! Thanks.

I thought I’d searched, clearly not well enough or insufficient secret-sauce.

That would have saved me some time … sigh

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New user signups by month with running total

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