example_0.bql

# Copyright 2015 Google Inc. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# Create a graph.
CREATE GRAPH ?family;

# Insert some data into the graph.
INSERT DATA INTO ?family {
  /u<joe> "parent_of"@[] /u<mary> .
  /u<joe> "parent_of"@[] /u<peter> .
  /u<peter> "parent_of"@[] /u<john> .
  /u<peter> "parent_of"@[] /u<eve>
};

# Find all Joe's offspring names.
SELECT ?name
FROM ?family
WHERE {
  /u<joe> "parent_of"@[] ?offspring ID ?name
};

# Find all Joe's grandchildren.
SELECT ?grandchildren_name
FROM ?family
WHERE {
  /u<joe> "parent_of"@[] ?offspring .
  ?offspring "parent_of"@[] ?grandchildren ID ?grandchildren_name
};

# Drop the graph.
DROP GRAPH ?family;