django.git/django/db/backends/postgresql, branch main

Fixed #37075 -- Allowed overriding the PostgreSQL pool's "check" callable.

2026-04-30T23:52:11Z

Setting "check" in OPTIONS["pool"] previously raised TypeError because the PostgreSQL backend always passed check= to ConnectionPool() and unpacked **pool_options on top, regardless of CONN_HEALTH_CHECKS. The user's callable now takes precedence via setdefault(); pool_options is copied first to avoid mutating the user's settings dict.

Fixed #36960 -- Enabled the use of psycopg 3's optimized timestamp loader.

2026-03-20T20:31:25Z

Based on Daniele Varrazzo's comment in https://github.com/psycopg/psycopg/issues/1273#issuecomment-3986829769

Refs #36795 -- Removed unnecessary prohibits_dollar_signs_in_column_aliases feature flag.

2026-03-19T16:24:17Z

Now that user provided aliases are systematically quoted there is no need to disallow the usage of the dollar sign on Postgres.

Fixed #36727 -- Deprecated Field.get_placeholder in favor of get_placeholder_sql.

2026-03-13T00:01:02Z

The lack of ability of the get_placeholder call chain to return SQL and parameters separated so they can be mogrified by the backend at execution time forced implementations to dangerously interpolate potentially user controlled values. The get_placeholder_sql name was chosen due to its proximity to the previous method, but other options such as Field.as_sql were considered but ultimately rejected due to its different input signature compared to Expression.as_sql that might have lead to confusion. There is a lot of overlap between what Field.get_db_prep_value and get_placeholder_sql do but folding the latter in the former would require changing its return signature to return expression which is a way more invasive change than what is proposed here. Given we always call get_db_prep_value it might still be an avenue worth exploring in the future to offer a publicly documented interface to allow field to take an active part in the compilation chain. Thanks Jacob for the review.

Applied Black's 2026 stable style.

2026-01-18T20:26:56Z

https://github.com/psf/black/releases/tag/26.1.0

Fixed #36822 -- Added parameter limit for PostgreSQL with server-side binding.

2026-01-16T14:15:53Z

Refs #33647 -- Fixed silent data truncation in bulk_create on Postgres.

2025-12-31T15:41:55Z

Regression in a16eedcf9c69d8a11d94cac1811018c5b996d491. The UNNEST strategy is affected by the same problem bulk_update has wrt/ to silent data truncation due to its usage of db_type which always returns a parametrized subtype.

Fixed #36112 -- Added fallback in last_executed_query() on Oracle and PostgreSQL.

2025-12-26T20:59:10Z

Refs #36735 -- Supported shift parameter for UUID7 on PostgreSQL.

2025-12-12T16:50:36Z

Fixed #36735 -- Added UUID4 and UUID7 database functions.

2025-12-12T16:17:08Z

Co-authored-by: Mariusz Felisiak