DuckDB Iceberg MERGE, PostgreSQL GUCs, SQLite Optimization Checklist

Today's Highlights

This week's highlights include powerful new Iceberg data manipulation features in DuckDB v1.5.3 and a deep dive into an obscure PostgreSQL GUC. Plus, the SQLite community discusses a practical optimization checklist for embedded databases.

New DuckDB-Iceberg Features in v1.5.3 (DuckDB Blog)

Source: https://duckdb.org/2026/05/29/new-iceberg-features.html