Same rows, different SUM

🫧 Open on Bubbles Everyone knows not to store money as a double precision . One can hope. The rule is so well drilled that it has stopped being interesting, and it is also not where the trouble usually starts. The float is already in the schema before anyone weighs in on it: a measurement column someone later sums for a report, telemetry that drifts into a finance dashboard, a third-party feed ingested as double precision because that is how it arrived. Here is the part the rule does not warn you about. Tak