NAME
App::wdq - command line access to Wikidata Query Service
DESCRIPTION
The command line script wdq, included in CPAN module App::wdq, provides
a tool to access Wikidata Query Service .
It supports formulation and execution of SPARQL SELECT queries
to extract selected
information from Wikidata or other Wikibase instances.
INSTALLATION
Either install from CPAN with all dependencies:
cpanm App::wdq
or install dependencies as prebuild packages (for instance Debian) and
copy the wdq script to some place in your $PATH:
sudo apt-get install libhttp-tiny-perl librdf-query-perl
wget https://github.com/nichtich/wdq/raw/master/bin/wdq
chmod +x wdq
The latter method will not install this documentation.
USAGE
Get a documented list of all command line options:
wdq --help
EXAMPLES
# get all parts of the solar system
wdq -q '{ ?c wdt:P361 wd:Q544 }'
# print expanded SPARQL query
wdq -n -q '{ ?c wdt:P361 wd:Q544 }'
# execute query and return tab-separated values
wdq -f tsv < query
# execute query, abbreviate Wikidata identifier, emit simple JSON
wdq -f simple --ids < query
# print result as Markdown Table (requires Catmandu::Exporter::Table)
wdq --export Table < query
COPYRIGHT AND LICENSE
Copyright Jakob Voss, 2015-
GPL 2.0