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Loading, cleaning and scheduling data with Python and plain SQL: what broke and how you fixed it.
3 threads · 7 replies · 26 October 2026
Tracking, tagging, attribution and reporting: why a number looks wrong and how to find out.
3 threads · 9 replies · 12 October 2026
Now
A script runs every 15 minutes from cron. Last week one run took 25 minutes, the next one started while it was still going, and both wrote to the same file. How do I stop a second…
QuestionPipelines and Python#cron#schedulingby tom_hartley2 replies
I read a CSV exported from our shop. The order_date column looks like 03/11/2025 (day first), but pandas says the type is object and sorting puts 25/12/2025 before 03/11/2025. A…
QuestionPipelines and Python#dates#pandasby lucia_fernandez2 replies
Our campaign report has Spring_Sale, spring-sale, springsale and spring sale as four different campaigns. Three people create links. What conventions or process actually work?
QuestionAnalytics and measurement#campaigns#utmby jordan_lee3 replies
My load job inserts the previous day's sales into a reporting table. One night it failed halfway, I re-ran it, and now that day has twice the rows and the totals are wrong. I do…
QuestionPipelines and Python#idempotency#pipelinesby chloe_dubois3 replies
For last month GA4 reports noticeably fewer purchases than the orders table in our shop's database. Revenue is also lower. Should the two match exactly? How would I find out where…
QuestionAnalytics and measurement#ga4#reconciliationby lucia_fernandez2 replies
I keep reading that you should write the measurement plan first. In practice I mostly see tracking added when someone asks for a report. Do you actually write one? What does it…
Analytics and measurement#measurement#planningby jordan_lee4 replies
People
The people who answer the most questions.
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The people who edit Grokem. We answer when we can and point to the page that says more.
10 replies · 1 question
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Data engineer. Opinions about idempotent loads.
8 replies · 0 questions
0 reputation
Python for data, a little DevOps on the side.
4 replies · 2 questions
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Marketing analyst, mostly GA4 and spreadsheets.
4 replies · 2 questions