---
title: 0.15.21
---

## Stability Improvements 💪

- Fixed an issue where "Top N" queries would return inconsistent results
- Various fixes to correctness issues in JOINs

## Performance Improvements 🚀

- Optimized fast field execution methods and query cost estimations, which has significantly improved certain types of JOINs
- Introduced a new [`paradedb.aggregate`](/documentation/aggregates/tantivy) function, intended as an escape hatch for fast aggregate
  execution over single tables

## New Features 🎉

- Introduced a token filter for stop words

## New Contributors 👋

- [blaginin](https://github.com/blaginin) made their first contribution in [#2577](https://github.com/paradedb/paradedb/pull/2577)

## Full Changelog

The full changelog is available [here](https://github.com/paradedb/paradedb/releases/tag/v0.15.21).