.. _2025-04-18-aggregation-in-change-rules_release:

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2025-04-18 - Aggregation in change rules
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Release
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**Enhanced Data Aggregation in Change Rules**

We've improved how you can aggregate data within your change rules, giving you more flexibility and control over your data transformations.

Previously, when aggregating fields, including the "effective date" in your output could be tricky. Now, our system automatically handles this for you!

If you include `effective_date` in a "group by" statement within your change rule, we'll automatically wrap it in a `max()` function. This ensures that the effective date is preserved correctly during the aggregation process, without altering the overall granularity of your data.

This enhancement leverages the power of Jinja templating, making it easier than ever to create sophisticated and accurate data aggregations.

Last Refreshed
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*Doc Refreshed: 2025-04-18*