Giorgi / DuckDB.NET / 26973994547

90%

develop: 89%

Build Type

push

github

Committed by Giorgi

Commit Message

Map DuckDB SQLNULL type to object in vector reader

DuckDB 1.6 reports untyped NULLs (e.g. an unbound null parameter in
SELECT ?) as the new SQLNULL type (id 36). GetColumnType and
GetColumnProviderSpecificType had no case for it, so GetFieldType threw
ArgumentException ("Unrecognised type SqlNull"). Map it to object, the
BCL-safe choice for a null/variant column (typeof(DBNull) cannot be used
as a DataColumn storage type). The null value itself is still surfaced
via IsDBNull/DBNull.Value at the value layer.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

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