bool_and
Aggregates boolean values. It returns TRUE if all of the values in the aggregation are true and FALSE if any of them are false, ignoring unbound values.
Returns: boolean
Table 1. 
Parameter  | Type  | Description  | 
|---|---|---|
value  | boolean  | The values to combine with AND  | 
Example
Query
PREFIX : <https://ddw-doccorp.linked.data.world/d/sparql-aggregation-sample-queries/>
PREFIX agg: <http://data.world/function/aggregate#>
SELECT (agg:bool_and(?foo > 0) AS ?bool_and)
{
    [ :col-aggregations-foo ?foo ]
}Table 1. Results
bool_and  | 
|---|
true  |