Search Shortcut cmd + k | ctrl + k
- Installation
- Guides
- Overview
- Data Import & Export
- CSV Import
- CSV Export
- Parquet Import
- Parquet Export
- Query Parquet
- HTTP Parquet Import
- S3 Parquet Import
- S3 Parquet Export
- JSON Import
- JSON Export
- Excel Import
- Excel Export
- SQLite Import
- PostgreSQL Import
- Meta Queries
- ODBC
- Python
- Install
- Execute SQL
- Jupyter Notebooks
- SQL on Pandas
- Import from Pandas
- Export to Pandas
- SQL on Arrow
- Import from Arrow
- Export to Arrow
- Relational API on Pandas
- Multiple Python Threads
- DuckDB with Ibis
- DuckDB with Polars
- DuckDB with Vaex
- DuckDB with DataFusion
- DuckDB with fsspec Filesystems
- SQL Features
- SQL Editors
- Data Viewers
- Documentation
- Connect
- Data Import
- Overview
- CSV Files
- JSON Files
- Multiple Files
- Parquet Files
- Partitioning
- Appender
- Insert Statements
- Client APIs
- Overview
- C
- Overview
- Startup
- Configure
- Query
- Data Chunks
- Values
- Types
- Prepared Statements
- Appender
- Table Functions
- Replacement Scans
- API Reference
- C++
- CLI
- Java
- Julia
- Node.js
- Python
- Overview
- Data Ingestion
- Result Conversion
- DB API
- Relational API
- Function API
- Types API
- Expression API
- Spark API
- API Reference
- Known Python Issues
- R
- Rust
- Scala
- Swift
- Wasm
- ADBC
- ODBC
- SQL
- Introduction
- Statements
- Overview
- Alter Table
- Alter View
- Attach/Detach
- Call
- Checkpoint
- Copy
- Create Macro
- Create Schema
- Create Sequence
- Create Table
- Create View
- Create Type
- Delete
- Drop
- Export
- Insert
- Pivot
- Select
- Set/Reset
- Unpivot
- Update
- Use
- Vacuum
- Query Syntax
- SELECT
- FROM & JOIN
- WHERE
- GROUP BY
- GROUPING SETS
- HAVING
- ORDER BY
- LIMIT
- SAMPLE
- UNNEST
- WITH
- WINDOW
- QUALIFY
- VALUES
- FILTER
- Set Operations
- Data Types
- Overview
- Bitstring
- Blob
- Boolean
- Date
- Enum
- Interval
- List
- Map
- NULL Values
- Numeric
- Struct
- Text
- Time
- Timestamp
- Time Zones
- Union
- Expressions
- Functions
- Overview
- Bitstring Functions
- Blob Functions
- Date Format Functions
- Date Functions
- Date Part Functions
- Enum Functions
- Interval Functions
- Nested Functions
- Numeric Functions
- Pattern Matching
- Text Functions
- Time Functions
- Timestamp Functions
- Timestamp with Time Zone Functions
- Utility Functions
- Aggregates
- Configuration
- Constraints
- Indexes
- Information Schema
- Metadata Functions
- Pragmas
- Rules for Case Sensitivity
- Samples
- Window Functions
- Extensions
- Sitemap
- Live Demo
Documentation
/ Extensions
ICU Extension
The icu extension contains an easy-to-use version of the collation/timezone part of the ICU library.
Installing and Loading
To install and load the icu extension, run:
INSTALL icu;
LOAD icu;
Features
The icu extension introduces the following features:
About this page
© 2025 DuckDB Foundation, Amsterdam NL