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DuckDB 1.5.6 fixes query-planning errors and silent integer truncation

duckdb.org by The DuckDB team 3 min read Editor score 7/10

The patch fixes optimizer pushdown and Top-N correctness issues, wrong results involving UNION ALL, and silent truncation of very long integer literals. These are concrete edge cases worth checking when upgrading embedded or analytical databases.

What

DuckDB 1.5.6 is a patch release with bug fixes, performance improvements, and security patches.

How

Fixes include query-planning correctness issues, silent truncation of long integer literals, and Parquet read/write defects.

Why it matters

These changes matter to engineers relying on database correctness, recovery, and stable client interfaces in production systems.

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