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## Which issue does this PR close? <!-- We generally require a GitHub issue to be filed for all bug fixes and enhancements and this helps us generate change logs for our releases. You can link an issue to this PR using the GitHub syntax. For example `Closes #123` indicates that this PR will close issue #123. --> - Closes #19820. ## Rationale for this change `isoyear` part is available in both PG and Spark EXTRACT functions. https://www.postgresql.org/docs/current/functions-datetime.html#:~:text=the%20week%20numbering.-,isoyear,-The%20ISO%208601 https://github.com/apache/spark/blob/a03bedb6c1281c5263a42bfd20608d2ee005ab05/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/datetimeExpressions.scala#L3360 ## What changes are included in this PR? Support for part `isoyear` in date_part function. ## Are these changes tested? yes in SLT ## Are there any user-facing changes? yes <!-- If there are any breaking changes to public APIs, please add the `api change` label. -->
DataFusion Documentation
This folder contains the source content of the User Guide and Contributor Guide. These are both published to https://datafusion.apache.org/ as part of the release process.
Dependencies
It's recommended to install build dependencies and build the documentation inside a Python virtualenv.
python3 -m venv venv
pip install -r requirements.txt
If using uv the script can be run like so without needing to create a virtual environment:
uv run --with-requirements requirements.txt bash build.sh
The docs build regenerates the workspace dependency graph via
docs/scripts/generate_dependency_graph.sh, so ensure cargo, cargo-depgraph
(cargo install cargo-depgraph --version ^1.6 --locked), and Graphviz dot
(brew install graphviz or sudo apt-get install -y graphviz) are available.
Build & Preview
Run the provided script to build the HTML pages.
# If using venv, ensure you have activated it
./build.sh
The HTML will be generated into a build directory. Open build/html/index.html
in your preferred browser, e.g.
Preview the site on Linux by running this command.
# On macOS
open build/html/index.html
# On Linux with Firefox
firefox build/html/index.html
Making Changes
To make changes to the docs, simply make a Pull Request with your proposed changes as normal. When the PR is merged the docs will be automatically updated.
Release Process
This documentation is hosted at https://datafusion.apache.org/
When the PR is merged to the main branch of the DataFusion
repository, a github workflow which:
- Builds the html content
- Pushes the html content to the
asf-sitebranch in this repository.
The Apache Software Foundation provides https://datafusion.apache.org/, which serves content based on the configuration in .asf.yaml, which specifies the target as https://datafusion.apache.org/.