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packages.html
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---
title: Packages
description: The packages that make up the Queryverse
---
<div class="content">
<section>
<div class="container flex">
<div class="text editable">
<p><a href="https://github.com/queryverse/Queryverse.jl">Queryverse.jl</a> is the meta-package for the Queryverse. It installs and makes usable most of the other packages that are described below. The main purpose of this package is to make it easier to install all of the Queryverse in one go.</p>
</div>
</div>
</section>
<section>
<div class="container flex">
<div class="text editable">
<h3>Data Manipulation</h3>
<p><a href="https://github.com/queryverse/Query.jl">Query.jl</a> provides commands to query and manipulate any data source. It provides tools to filter, sort, group, join and do many other operations on datasets. It works equally well with tabular and non-tabular data sources.</p>
<p><a href="https://github.com/queryverse/QuerySQLite.jl">QuerySQLite.jl</a> provides a SQLite backend for <a href="https://github.com/queryverse/Query.jl">Query.jl</a>. One can write normal <a href="https://github.com/queryverse/Query.jl">Query.jl</a> queries against a SQLite database. These queries are automatically translated into SQL, so that all processing of such a query occurs in the database.</p>
<p><a href="https://github.com/queryverse/DataTables.jl">DataTables.jl</a> provides a minimalistic, lightweight and read-only tabular data structure.</p>
</div>
</div>
</section>
<section>
<div class="container flex">
<div class="text editable">
<h3>Data Visualization</h3>
<p><a href="https://github.com/queryverse/VegaLite.jl">VegaLite.jl</a>
provides an intuitive and easy to use Julia API for
the grammar of interactive graphics
<a href="https://vega.github.io/vega-lite/">Vega-Lite</a>
platform. It is the main plotting package for Queryverse.
</p>
<p><a href="https://github.com/queryverse/DataVoyager.jl">DataVoyager.jl</a>
is a Julia package that provides an interactive data
exploration tools. It is based on the <a href="https://github.com/vega/voyager">Voyager</a>
project and it tightly integrated with <a href="https://github.com/queryverse/VegaLite.jl">VegaLite.jl</a>.
</p>
<p><a href="https://github.com/queryverse/ElectronDisplay.jl">ElectronDisplay.jl</a>
is an Electron based figure and table display for Julia. When the package
is loaded, figures from various plotting packages open
up in a custom Electron window. The package natively
supports interactive figures from <a href="https://github.com/queryverse/VegaLite.jl">VegaLite.jl</a>
and <a href="https://github.com/sglyon/PlotlyJS.jl">PlotlyJS.jl</a>. It also provides
a grid view for tabular data.
</p>
</div>
</div>
</section>
<section>
<div class="container flex">
<div class="text editable">
<h3>File IO</h3>
<p><a href="https://github.com/queryverse/CSVFiles.jl">CSVFiles.jl</a>
can read and write CSV files. Under the hood it uses
the extremly fast <a href="https://github.com/JuliaComputing/TextParse.jl">TextParse.jl</a>
package.
</p>
<p><a href="https://github.com/queryverse/FeatherFiles.jl">FeatherFiles.jl</a>
can read and write Feather files.
</p>
<p><a href="https://github.com/queryverse/ExcelFiles.jl">ExcelFiles.jl</a>
can read and write Excel Files.
</p>
<p><a href="https://github.com/queryverse/StatFiles.jl">StatFiles.jl</a>
can read SPSS, STATA and SAS files.
</p>
<p><a href="https://github.com/queryverse/ParquetFiles.jl">ParquetFiles.jl</a>
can read Parquet files.
</p>
<p><a href="https://github.com/queryverse/VegaDatasets.jl">VegaDatasets.jl</a>
provides some example datasets from the <a href="https://github.com/vega/vega-datasets">
Vega Datasets</a> project.
</p>
</div>
</div>
</section>
<section>
<div class="container flex">
<div class="text editable">
<h3>Low level infrastructure</h3>
<p><a href="https://github.com/queryverse/TableTraits.jl">TableTraits.jl</a>
contains the core table interface that powers all of
Queryverse and enables seemless interopability between
lots of different packages that work with tabular data.
</p>
<p><a href="https://github.com/queryverse/DataValues.jl">DataValues.jl</a>
contains the core types that the Queryverse uses to handle
missing (also known as NA or NULL) data.
</p>
<p><a href="https://github.com/queryverse/IteratorInterfaceExtensions.jl">IteratorInterfaceExtensions.jl</a>
has a few extensions to the standard Julia iterator interface
that are used throughout the Queryverse.
</p>
<p><a href="https://github.com/queryverse/TableTraitsUtils.jl">TableTraitsUtils.jl</a>
provides helper functions and types that make it easier
to implement the <a href="https://github.com/queryverse/TableTraits.jl">TableTraits.jl</a>
interface.
</p>
<p><a href="https://github.com/queryverse/TableShowUtils.jl">TableShowUtils.jl</a>
provides various functions that are used throughout
the Queryverse to show tabular data in the REPL and
in some other MIME formats.
</p>
<p><a href="https://github.com/queryverse/IterableTables.jl">IterableTables.jl</a>
contains implementations of the <a href="https://github.com/queryverse/TableTraits.jl">TableTraits.jl</a>
interface for packages that don't support this interface
natively. As more packages support <a href="https://github.com/queryverse/TableTraits.jl">TableTraits.jl</a>
out of the box, the role of this package becomes less
and less important.
</p>
</div>
</div>
</section>
<section>
<div class="container flex">
<div class="text editable">
<h3>Internal packages</h3>
<p><a href="https://github.com/queryverse/FeatherLib.jl">FeatherLib.jl</a>
provides low level functions to read Feather Files. The
<a href="https://github.com/queryverse/FeatherFiles.jl">FeatherFiles.jl</a>
packages uses it to provide a user friendly API for
Feather files.
</p>
<p><a href="https://github.com/queryverse/ExcelReaders.jl">ExcelReaders.jl</a>
provides a low level interface to read Excel files. The
<a href="https://github.com/queryverse/ExcelFiles.jl">ExcelFiles.jl</a>
packages uses it to provide a user friendly API for
Excel files.
</p>
<p><a href="https://github.com/queryverse/QueryOperators.jl">QueryOperators.jl</a>
contains the low level query operator function definitions
and the default implementation of the query operators
for iterable sources. The <a href="https://github.com/queryverse/Query.jl">Query.jl</a>
package provides a user friendly API for this functionality.
</p>
</div>
</div>
</section>
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