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9f3cce172f
The introduction of the Expression.empty_aggregate_value interface allows the compilation stage to enable the EmptyResultSet optimization if all the aggregates expressions implement it. This also removes unnecessary RegrCount/Count.convert_value() methods. Disabling the empty result set aggregation optimization when it wasn't appropriate prevented None returned for a Count aggregation value. Thanks Nick Pope for the review. |
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| faq | ||
| howto | ||
| internals | ||
| intro | ||
| man | ||
| misc | ||
| ref | ||
| releases | ||
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| conf.py | ||
| contents.txt | ||
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| index.txt | ||
| make.bat | ||
| Makefile | ||
| README.rst | ||
| requirements.txt | ||
| spelling_wordlist | ||
The documentation in this tree is in plain text files and can be viewed using any text file viewer. It uses `ReST`_ (reStructuredText), and the `Sphinx`_ documentation system. This allows it to be built into other forms for easier viewing and browsing. To create an HTML version of the docs: * Install Sphinx (using ``python -m pip install Sphinx`` or some other method). * In this docs/ directory, type ``make html`` (or ``make.bat html`` on Windows) at a shell prompt. The documentation in ``_build/html/index.html`` can then be viewed in a web browser. .. _ReST: https://docutils.sourceforge.io/rst.html .. _Sphinx: https://www.sphinx-doc.org/