# Changelog

## Unreleased
- Add support for reading and writing arrays.
- Added `Database.DuckDB.Simple.Generic` with GHC generics helpers (`GToField`/`GFromField`) for encoding records as DuckDB STRUCTs and sum types as UNIONs, plus a `ViaDuckDB` newtype for convenient @DerivingVia@ support.
- Added `DuckValue` instances for `[]`, `Array Int a`, and `Map k v` to enable lists, arrays, and maps as fields within generically-encoded structs and unions.
- Documented struct/union generic support; added richer tests covering database round-trips and deriving-via examples.
- Support decoding and binding STRUCT and UNION values via new `StructValue`/`UnionValue` helpers and corresponding `FromField`/`ToField` instances.

## 0.1.2.0
- Added LIST/MAP coverage note: LIST columns decode into Haskell lists and MAP columns into strict `Map k v`, with matching parameter bindings via `ToField`.
- Taught `FromField` to interpret `FieldBigNum` as `Integer`/`Natural` and added matching `ToField` instances for `BigNum`, `Integer`, and `Natural` so BIGNUM parameters round-trip without truncation.
- Added `duckdbColumnType` helper and `DuckDBColumnType` class, exposing the DuckDB column type associated with each `ToField` instance.
- Fixed UUID decoding by undoing DuckDB’s upper-word bias and added a UUID round-trip regression test.
- Fixed BIT encoding and decoding

## 0.1.1.2
- Broadened `FieldValue` and `FromField` coverage to handle all DuckDB scalar types, including intervals, HUGEINT/UHUGEINT, decimals (with metadata), time/timestamp with additional precisions, timezone-aware values, bit strings, bignums, and enums.
- Fixed enum decoding for both query results and scalar-function inputs by honouring the logical type’s underlying storage width (uint8/uint16/uint32).
- Ensured decimal vectors read accurate width/scale metadata when materializing results or invoking UDFs.
- Added unsigned `ToField` bindings that route through DuckDB’s native uint creators and exposed `FromField Word`.
- Expanded the test suite with regressions covering unsigned round-trips, huge integers, intervals, decimals, and timezone-aware values.

## 0.1.0.0
- Initial release