Understands the major SPARQL result set modifiers, e.g., to limit or sort results, or to return distinct results only once.
Tarql: SPARQL for Tables
Tarql is a command-line tool for converting CSV files to RDF using SPARQL 1.1 syntax. In short, a CSV file’s contents are input into a [...]
Equality and Inequality in SPARQL
This brief blog post discusses issues surrounding expression semantics in SPARQL. Practices that people are used to from other languages (like the use of "=" [...]
Ordnance Survey Linked Data: Simple SPARQL Example
This blog post shares how to retrieve several variables of data from the Ordnance Survey dataset, available as Linked Open Data (LOD). Includes SPARQL queries [...]
SPARQL: Using Operators Tutorial and Quiz
This slide tutorial focuses on using various operators in SPARQL queries. Several examples are provided which include the RDF data being queried, the SPARQL query [...]
SPARQL: Using SELECT Tutorial and Quiz
This slide tutorial focuses on using SELECT in SPARQL queries, but also includes other basic operators. Several examples are provided which include the RDF data [...]
DBPedia SPARQL Endpoint Exercises
This slide tutorial teaches the user how to form SPARQL queries to answer various questions of interest and retrieve results from DBpedia's SPARQL endpoint. In [...]
Semantic Queries
This is the sixth chapter in MarkLogic's "Semantic Developer's Guide". This chapter discusses the principal techniques and tools used for performing semantic queries on RDF [...]
MarkLogic: Introducing SPARQL
A brief tutorial on how to explore a previously loaded graph database using a SPARQL endpoint. Gives several examples of queries using DBpedia and BBC [...]
MarkLogic: SPARQL and XQuery together
This exercise covers the use of SPARQL and XQuery together in a few different ways. This involves running a series of queries on the BBC [...]
SPARQL Queries for Publications and Authors
This page contains SPARQL queries useful for finding information on authors and publications on VIVO. These query examples, if adapted, have other useful applications as [...]