1.6 KiB
@brief Select all source vertices of the edges selected before.
graph_query.fromVertices(examples)
Creates an AQL statement to select the set of vertices where the edges selected in the step before start at. This includes all vertices contained in _from attribute of the edges. The resulting set of vertices can be filtered by defining one or more examples.
@PARAMS
@PARAM{examples, object, optional} See Definition of examples
@EXAMPLES
To request unfiltered source vertices:
@EXAMPLE_ARANGOSH_OUTPUT{generalGraphFluentAQLFromVerticesUnfiltered} var examples = require("@arangodb/graph-examples/example-graph.js"); var graph = examples.loadGraph("social"); var query = graph._edges({type: "married"}); query.fromVertices().toArray(); ~ examples.dropGraph("social"); @END_EXAMPLE_ARANGOSH_OUTPUT
To request filtered source vertices by a single example:
@EXAMPLE_ARANGOSH_OUTPUT{generalGraphFluentAQLFromVerticesFilteredSingle} var examples = require("@arangodb/graph-examples/example-graph.js"); var graph = examples.loadGraph("social"); var query = graph._edges({type: "married"}); query.fromVertices({name: "Alice"}).toArray(); ~ examples.dropGraph("social"); @END_EXAMPLE_ARANGOSH_OUTPUT
To request filtered source vertices by multiple examples:
@EXAMPLE_ARANGOSH_OUTPUT{generalGraphFluentAQLFromVerticesFilteredMultiple} var examples = require("@arangodb/graph-examples/example-graph.js"); var graph = examples.loadGraph("social"); var query = graph._edges({type: "married"}); query.fromVertices([{name: "Alice"}, {name: "Charly"}]).toArray(); ~ examples.dropGraph("social"); @END_EXAMPLE_ARANGOSH_OUTPUT