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DuckDB C API

Complete C/C++ API for embedding DuckDB in applications with query execution, data types, and Arrow support.

Field note

What it does

Low-level C API providing database lifecycle management, configuration, query execution, prepared statements, data chunk and vector interfaces, scalar/aggregate/table functions, Arrow streaming, and appender utilities.

Capabilities

Available capabilities

Arrow Interface Query execution Custom Functions Prepared Statements Data Chunk Interface Streaming Results

API Reference Overview

DuckDB C API

What it does

Available capabilities

Tags

Ways to use it

Product features

API Reference Overview

Configuration

Date Time Timestamp Helpers

Decimal Helpers

Error Data

Helpers

Hugeint Helpers

Open Connect

Query Execution

Result Functions

Safe Fetch Functions

Unsigned Hugeint Helpers