Tag query

The query tag performs a query on a dataset and returns a Pandas DataFrame. Here are parameters of the query tag:

Name	Description
`dataset`	Name of a dataset to query (default `kb`)
`datastore`	Data backend. `clingo`, `duckdb`, and `rdflib` are available. (by default, `rdflib`)
`isfilepath`	A bool value to denote if the given data is a file path or not (default `True`, which denotes the given data is a file path)
`predicate`	Name of the predicate to be queried (default `None`). Available for `clingo` data backend only.
`programname`	Name of the program (default `'base'`). Available for `clingo` data backend only.
`rformat`	Format of the returned data, i.e., `'lp'`, `'df'`, or `'dict'` (default `'lp'`). Available for `clingo` data backend only.

Example 1: the given string is not a file path

{% query "test", datastore="rdflib", isfilepath=False %}
    SELECT ?s ?p ?o
    WHERE {
        ?s ?p ?o
    }
    ORDER BY ?s ?p ?o
{% endquery %}

Example 2: the given string is a file path

{% query "test", datastore="rdflib", isfilepath=True %} query_file {% endquery %}

Here is the query_file's content:

SELECT ?s ?p ?o
WHERE {
    ?s ?p ?o
}
ORDER BY ?s ?p ?o