Release 2.28.3

# TimescaleDB Changelog

**Please note: When updating your database, you should connect using
`psql` with the `-X` flag to prevent any `.psqlrc` commands from
accidentally triggering the load of a previous TimescaleDB version.**

## 2.28.3 (2026-07-16)

This release contains performance improvements and bug fixes since the
2.28.2 release. We recommend that you upgrade at the next available
opportunity.

**Bugfixes**
* [#10082](#10082) Wrong
result when evaluating a function returning `NULL` in the columnar query
execution pipeline
* [#10178](#10178) Fix
incorrect usage of sort transformation for sort key expressions with
negative constants
* [#10179](#10179) Allow
enabling and disabling triggers on hypertables with columnstore enabled
* [#10182](#10182) Fix
columnstore sort pushdown to check for different query sort key
collation
* [#10209](#10209) Fix
potentially wrong results for `stddev(float4)` and `stddev(float8)` when
used with `avg()` in the columnar query execution pipeline
* [#10212](#10212) Fix race
condition when enabling compression on a hypertable
* [#10230](#10230) Batch
filtering for compressed `DML` should respect collation
* [#10254](#10254) Direct
delete failed to handle array predicates with `NULL` values and deleted
more rows than intended
([#10129](#10129))
* [#10257](#10257) Reuse
existing `dimension_slice` IDs when possible
* [#10265](#10265) Truncate
constraint name before trying to rename

**Thanks**
* @juantxorena for reporting that triggers could not be enabled or
disabled on hypertables with columnstore enabled

Author: timescale-automation