ducky v0.4.0

v0.4.0 release notes (2026-04-22)

Full Changelog: v0.3.0...v0.4.0

Added

• Prepared statement API: prepare, execute, finalize, with_statement
• Bulk append via DuckDB's appender API: append_rows
• exec function for DDL/DML statements that return no rows
• Parameter constructor functions matching Gleam DB conventions: int(), float(), text(), blob(), bool(), null(), nullable(), timestamp(), date(), time(), interval(), decimal()
• UNION type support with tagged value decoding

Changed

• BREAKING: Removed unused Timeout and TypeMismatch error variants
• BREAKING: Decode failures now return Error instead of silently converting to Null
• UnsupportedParameterType error now reports the specific type name
• Docs and examples updated to use exec and parameter constructors

Fixed

• Blob encoding now returns Blob(BitArray) instead of List(Integer)
• Blob parameter binding support added to NIF
• NIF name mismatch for health_check function

ducky v0.3.0

v0.3.0 release notes (2026-02-02)

Full Changelog: v0.2.1...v0.3.0

Added

• DECIMAL type with lossless string encoding
• ENUM type support
• ARRAY and MAP types for query results
• Timestamp, Date, Time parameter binding
• Interval type with parameter binding
• HTTP proxy support for NIF downloads

Changed

• BREAKING: Public API consolidated into single ducky module
• Error decoder now uses proper dynamic decoders

Fixed

• Silent NULL conversion for unsupported parameter types

ducky v0.2.1 – Bugfix

v0.2.1 release notes (2026-01-25)

Full Changelog: v0.2.0...v0.2.1

Fixed

• CRITICAL: Removed rebar.config from package that caused build failures error: there is no code in this directory.

Changed

• NIF binary now auto-downloads at runtime on first use

ducky v0.2.0

v0.2.0 release notes (2026-01-24)

Full Changelog: v0.1.0...v0.2.0

Caution

ERROR rebar.config triggered rebar3 compilation but package structure was incompatible.
v0.2.0 was unusable. Please use v0.2.1 instead.

Added

• Pre-built binaries for 5 platforms (macOS ARM64/x64, Linux ARM64/x64, Windows x64)
• Automatic NIF fetch at build time with source compilation fallback
• STRUCT types with field() accessor for composite data
• Temporal types: DATE, TIME, TIMESTAMP, INTERVAL
• LIST types with recursive nesting
• Example: complex_types demonstrating advanced type usage

ducky v0.1.0

v0.1.0 release notes (2026-01-16)

Full Changelog: https://github.com/lemorage/ducky/commits/v0.1.0

Added

• Query execution: query() and query_params()
• Connection management: connect() and close()
• Automatic cleanup: with_connection() (recommended)
• Transactions: transaction() with auto-commit/rollback
• Type mappings: Null, Boolean, Integer, BigInt, Float, Double, Text, Blob
• DataFrame results with typed rows
• Error handling with descriptive variants

Security

• Parameterized queries prevent SQL injection