
Makes a POST request to Wikidata Query Service SPARQL endpoint.
query_wikidata(sparql_query, format = "tibble", ...)
SPARQL query (can be a vector of queries)
`tibble` (default) returns a pure character data frame, `simple` returns a pure character vector, while `smart` fetches JSON-formatted data and returns a tibble with datetime columns converted to `POSIXct`
Additional parameters to supply to [httr::POST]
A `tibble` or `vector`. Note: QID values will be returned as QIDs, rather than URLs.
There is a hard query deadline configured which is set to 60 seconds. There are also following limits: - One client (user agent + IP) is allowed 60 seconds of processing time each 60 seconds - One client is allowed 30 error queries per minute See [query limits section](https://www.mediawiki.org/wiki/Wikidata_Query_Service/User_Manual#Query_limits) in the WDQS user manual for more information.
# NOT RUN {
# R's versions and release dates:
sparql_query <- 'SELECT DISTINCT
?softwareVersion ?publicationDate
WHERE {
BIND(wd:Q206904 AS ?R)
?R p:P348 [
ps:P348 ?softwareVersion;
pq:P577 ?publicationDate
] .
}'
query_wikidata(sparql_query)
# }
# NOT RUN {
# "smart" format converts all datetime columns to POSIXct
query_wikidata(sparql_query, format = "smart")
# }
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