v0.3.0

Feature release that adds SCRAM-SHA-256 (SASL) authentication.

Highlights:

• add SCRAM-SHA-256 (SASL) authentication without channel binding
• add a pure pg_scram.pl layer (PBKDF2-HMAC-SHA256, client proof, and server-signature verification) validated against the RFC 7677 test vectors
• parse the SASL mechanism list and carry the full client-first message in pg_protocol.pl
• drive the SASL exchange and verify the server signature in pg_auth.pl
• add a scram-sha-256 mode to the local test harness via make test-local-pg-scram
• preserve the existing public predicate signatures and local test coverage

v0.2.1

Patch release that moves prepared statements and session message handling closer to explicit per-connection state without changing the public API.

Highlights:

• move prepared statements into the per-session state container
• thread session state explicitly through the backend read loop
• reduce disconnect cleanup to a single session-state teardown path
• keep async notice/notify routing and COPY side-message handling compatible
• preserve the existing public predicate signatures and local test coverage

v0.2.0

Feature release that expands COPY support, adds cancellation and profiling tools, and improves package-level documentation.

Highlights:

• add pg_cancel/1 and centralize row decoding around the active driver layers
• add binary COPY FROM STDIN with typed row input via binary(TypeSpecs, Rows)
• add streaming pg_copy_to/3 for COPY TO STDOUT with callback-delivered chunks
• add a row-decoding profiling harness and preserve the measured optimizations in the driver
• add package/module documentation plus a runnable examples/simple.pl example
• recover cleanly after COPY TO STDOUT callback failures and binary COPY server-side errors
• add byte-level COPY framing tests plus local PostgreSQL coverage for binary COPY and streaming COPY-out

v0.1.2

0.1.2

Patch release that tightens protocol handling and improves release confidence.

Highlights

• fix the UTF-8 startup encoding contract
• fix simple-query result selection for multi-statement responses
• fix COPY FROM STDIN recovery after negotiation and server-side failures
• fix connection cleanup and transaction-state checks after errors
• refactor pg_protocol.pl to express wire encoding/decoding via DCG-based binary helpers
• add focused byte-level protocol tests alongside the existing integration suite

Verification

• make test-local-pg
• make test-local-pg-md5
• make release VERSION=v0.1.2

v0.1.1

Summary

• add explicit \library(apply)\\ imports in \pg.pl\\ and \pg_prepared.pl\\
• ensure \maplist/3\\ is available in packaged builds

Artifact

• \postgresql-prolog-v0.1.1.tar.gz\\

v0.1.0

0.1.0

Initial public release of the SWI-Prolog PostgreSQL driver pack.

Highlights

• connection lifecycle with simple queries
• prepared statements and parameterized queries
• cleartext password and md5 authentication
• LISTEN / NOTIFY support
• COPY FROM STDIN for text and csv input
• session-state tracking and recovery after protocol errors
• local PostgreSQL test harness with both trust and md5 modes