---
title: 0.21.6
description: "ParadeDB release notes for 0.21.6"
noindex: true
---

See GitHub release: [v0.21.6](https://github.com/paradedb/paradedb/releases/tag/v0.21.6)

## Stability Improvements 💪

- Fixed an issue where `ORDER BY lower()` was not getting an optimized Top K scan if `lower()` was literal normalized
- Fixed a rare `u32` overflow issue that could cause queries to fail over large segments
- Fixed an issue where [filter pushdown](/reference/filtering/indexed) did not happen if non-text columns appeared after text columns in the index definition
- Fixed an issue where `GROUP BY` queries over datetime fields would error with `paradedb.enable_aggregate_custom_scan` enabled

## Performance Improvements 🚀

Improved the filtering performance of partial indexes. For example, in the following query `deleted_at IS NULL`
gets fully pushed down to the index.

```sql
CREATE INDEX idx ON profiles USING bm25 (...) WHERE deleted_at IS NULL;
SELECT * FROM profiles WHERE headline ||| 'recruteur' AND deleted_at IS NULL;
```