Add properties for new job statistics

bigquery/google/cloud/bigquery/job.py

@@ -1390,6 +1390,20 @@ def referenced_tables(self):
 
         return tables
 
+    @property
+    def schema(self):
+        """Return schema from job statistics, if present.
+
+        See:
+        https://cloud.google.com/bigquery/docs/reference/rest/v2/jobs#statistics.query.schema
+
+        :rtype: list of :class:`~google.cloud.bigquery.schema.SchemaField
+        :returns: fields describing the query's result set, or an empty list
+                  if the query has not yet completed.
+        """
+        query_stats = self._query_statistics()
+        return _parse_schema_resource(query_stats.get('schema', {}))
+
     @property
     def num_dml_affected_rows(self):
         """Return total bytes billed from job statistics, if present.

bigquery/tests/unit/test_job.py

@@ -1766,6 +1766,56 @@ def test_referenced_tables(self):
         self.assertIsInstance(remote._dataset._client, _Client)
         self.assertEqual(remote._dataset._client.project, 'other-project-123')
 
+    def test_schema(self):
+        from google.cloud.bigquery.table import _parse_schema_resource
+
+        schema = {
+            'fields': [{
+                'name': 'full_name',
+                'type': 'STRING',
+                'mode': 'NULLABLE',
+                'description': 'DESCRIPTION'
+            }, {
+                'name': 'phone_number',
+                'type': 'STRING',
+                'mode': 'REPEATED',
+            }, {
+                'name': 'address',
+                'type': 'RECORD',
+                'mode': 'REPEATED',
+                'fields': [{
+                    'name': 'street_address',
+                    'type': 'STRING',
+                    'mode': 'NULLABLE',
+                }, {
+                    'name': 'city',
+                    'type': 'STRING',
+                    'mode': 'NULLABLE',
+                }, {
+                    'name': 'state',
+                    'type': 'STRING',
+                    'mode': 'NULLABLE',
+                }, {
+                    'name': 'zip',
+                    'type': 'STRING',
+                    'mode': 'NULLABLE',
+                }],
+            }],
+        }
+        client = _Client(self.PROJECT)
+        job = self._make_one(self.JOB_NAME, self.QUERY, client)
+        self.assertEqual(job.schema, ())
+
+        statistics = job._properties['statistics'] = {}
+        self.assertEqual(job.schema, ())
+
+        query_stats = statistics['query'] = {}
+        self.assertEqual(job.schema, ())
+
+        query_stats['schema'] = schema
+
+        self.assertEqual(job.schema, _parse_schema_resource(schema))
+
     def test_num_dml_affected_rows(self):
         num_rows = 1234
         client = _Client(self.PROJECT)