Creates the query parameter list sent to PXWEB API v2
/tables/{tableId}/data requests. The language is taken from the URL
when present, otherwise from the raw v2 metadata attached to pxmd.
pxweb_v2_data_query_params(px, pxmd = NULL, output_format = "json-stat2")a named list of query parameters.
a pxweb object.
optional pxweb_metadata object created from a v2 metadata
response.
data output format requested from the API. Defaults to
"json-stat2".