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LOAD / INSTALL Statements 12910
INSTALL The INSTALL statement downloads an extension so it can be loaded into a DuckDB session. Examples Install the httpfs extension: INSTALL httpfs; Install the h3 community extension : INSTALL h3 FROM community; Syntax LOAD The LOAD stat ... ement loads an installed DuckDB extension into the current session. LOAD does not install extensions: if the extension is not install ... ed yet, LOAD fails with an error asking you to run INSTALL first. Use INSTALL AND LOAD to do both in one step. (When a query uses a fun ... ction or feature of a known core extension, autoloading installs and loads it automatically.) Loading an extension also installs and loads any extensions it depends on. For ex ...
https://man.mtool.work/duckdb/2.0/sql/statements/load_and_install.html
Load Extensions 11259
Overview DuckDB-Wasm's (dynamic) extension loading is modeled after regular DuckDB's extension loading, with a few relevant differences due to the difference in platform. A growing subset of core, community, and external extensions is suppo ... rted. This page explains the extension format, how INSTALL and LOAD behave, autoloading, which extensions are available, signing, and how extensions are fetched and served. Format Extensions ... in DuckDB are binaries to be dynamically loaded via dlopen . A cryptographical signature is appended to the binary. An extension in DuckDB-Wasm is a regular Wasm file t ... o be dynamically loaded via Emscripten's dlopen . A cryptographical signature is appended to the Wasm file as a WebAssembly custom section calle ...
https://man.mtool.work/duckdb/2.0/clients/wasm/extensions.html
Guides 10750
The guides section contains compact how-to guides that are focused on achieving a single goal. For API references and examples, see the rest of the documentation. Note that there are many tools using DuckDB, which are not covered in the off ... Data Import and Export Data import overview File access with the file: protocol Reading DuckDB databases CSV Files How to load a CSV file into a table How to export a table to a CSV file Parquet Files How to load a Parquet file into a table How to e ... y directly on a Parquet file HTTP(S), S3 and GCP Network and cloud storage overview How to authenticate to S3 / AWS How to load a Parquet file directly from HTTP(S) How to load a CSV file directly from HTTP(S) How to load a Parquet file directly from ... S3 How to export a Parquet file to S3 How to load a Parquet file from S3 Express One How to load a Parquet file directly from GCS How to load a Parquet file directly from C ...
https://man.mtool.work/duckdb/2.0/guides/overview.html
Extensions 10434
DuckDB has a flexible extension mechanism that allows for dynamically loading extensions. Extensions can enhance DuckDB's functionality by providing support for additional file formats, introducing new types, and domain-specific functionali ... ty. Extensions are loadable on all clients (e.g., Python and R). Extensions distributed via the Core and Community repositories are built and test ... ns. For the full list, we maintain a list of core extensions . Tip We provide an endpoint that serves weekly extension download statistics as JSON files: core extensions and community extensions . Built-In Extensions DuckDB's binary distribution come ... NKED'; Most of DuckDB's scalar and aggregate functions are provided by the core_functions extension, which is built in and loaded by default in the standard distributions (such as the CLI). Minimal embeddings that do not load any extensions by defaul ...
https://man.mtool.work/duckdb/2.0/extensions/overview.html
AWS Extension 8990
The aws extension adds functionality, e.g., authentication, on top of the httpfs extension's S3 capabilities , using the AWS SDK. Installing and Loading The aws extension will be transparently autoloaded on first use from the official exten ... sion repository. If you would like to install and load it manually, run: INSTALL AND LOAD aws; In most cases, the aws extension works in conjunction with the httpfs extension . ... SA) ) The credential_chain provider also allows overriding the automatically fetched config. For example, to automatically load credentials, and then override the region, run: CREATE OR REPLACE SECRET secret ( TYPE s3, PROVIDER credential_chain, CHAI ... N config, REGION '⟨eu-west-1⟩' ); Selecting a Profile To load credentials based on a named profile which is not the default (from the AWS_PROFILE environment variable or the default pr ...
https://man.mtool.work/duckdb/2.0/core_extensions/aws.html
Extension Distribution 8262
Platforms Extension binaries are distributed for several platforms (see below). For platforms where packages for certain extensions are not available, users can build them from source and install the resulting binaries manually . Most offic ... ed with a cryptographic key. By default, DuckDB uses its built-in public keys to verify the integrity of extensions before loading them. All core and community extensions are signed by the DuckDB team. In addition, custom extension repositories can s ... TP without the need for HTTPS, which itself is supported through an extension ( httpfs ). Unsigned Extensions Warning Only load unsigned extensions from sources you trust. Avoid loading unsigned extensions over HTTP. Consult the Securing DuckDB page ... for guidelines on how to set up DuckDB in a secure manner. If you wish to load your own extensions or extensions from third-parties you will need to enable the allow_unsigned_extensions flag. To load u ...
https://man.mtool.work/duckdb/2.0/extensions/extension_distribution.html
HTTP Parquet Import 8008
To load a Parquet file over HTTP(S), the httpfs extension is required. This can be installed using the INSTALL SQL command. This only needs to be run once. INSTALL httpfs; To load the httpfs extension for usage, use the LOAD SQL command: LOAD ...
https://man.mtool.work/duckdb/2.0/guides/network_cloud_storage/http_import.html
Schema 7801
Types It is important to use the correct type for encoding columns (e.g., BIGINT , DATE , DATETIME ). While it is always possible to use string types ( VARCHAR , etc.) to encode more specific values, this is not recommended. Strings use mor ... e space and are slower to process in operations such as filtering, join, and aggregation. When loading CSV files, you may leverage the CSV reader's auto-detection mechanism to determine the correct types for CSV inputs. If ... mns is approx. 1.8× faster than performing the same join on VARCHAR -typed columns encoding the same value. Join column payload type Join column schema type Example value Query time BIGINT BIGINT 70368755640078 1.2 s BIGINT VARCHAR '70368755640078' 2 ... DB already applies dictionary encoding to string columns in storage, so this technique mainly pays off for query-heavy workloads that repeatedly group or join on a low-cardinality string column. Constraints DuckDB allows defining constraints such as ...
https://man.mtool.work/duckdb/2.0/guides/performance/schema.html
Building Extensions 7595
Extensions can be built from source and installed from the resulting local binary. Building Extensions To build using extension flags, set the BUILD_EXTENSIONS flag to the list of extensions that you want to be built. For example: BUILD_EXT ... statically linked into the DuckDB executable by default: they are installed from the build's own extension repository and loaded on first use. To link them into the executable, set LINK_CORE_EXTENSIONS=1 or list them in STATICALLY_LINK_EXTENSIONS (s ... le, create an extension configuration file named extension_config.cmake with e.g., the following content: duckdb_extension_load(autocomplete) duckdb_extension_load(tpch) duckdb_extension_load(tpcds) duckdb_extension_load(icu) duckdb_extension_load(js ... on) duckdb_extension_load(parquet) Build DuckDB as follows: GEN=ninja EXTENSION_CONFIGS="extension_config.cmake" make Then, to install the extension ...
https://man.mtool.work/duckdb/2.0/dev/building/building_extensions.html
S3 Parquet Import 7547
Prerequisites To load a Parquet file from S3, the httpfs extension is required. This can be installed using the INSTALL SQL command. This only needs to be run once. INSTALL httpfs; To load the httpfs extension for usage, use the LOAD SQL co ... mmand: LOAD httpfs; Credentials and Configuration After loading the httpfs extension, set up the credentials and S3 region to read dat ...
https://man.mtool.work/duckdb/2.0/guides/network_cloud_storage/s3_import.html
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