sum

Returns the sum of all numeric values in a specified column which are not unbound and can only be used with numeric data. data.world's sum differs from the default SPARQL sum in that it ignores unbound values. In standard SPARQL, if any of the values are unbound then the result is unbound.

Returns: decimal

PREFIX : <https://ddw-doccorp.linked.data.world/d/sparql-aggregation-sample-queries/>
PREFIX agg: <http://data.world/function/aggregate#>

SELECT (agg:sum(?foo) AS ?sum)
{
    [ :col-aggregations-foo ?foo ]
}