text: CREATE TABLE fruits (
    id int,
    items jsonb
  );
  
  INSERT INTO fruits VALUES (1, '{"name": "apple"}');
  INSERT INTO fruits VALUES (2, '{"type": "apple"}');
  INSERT INTO fruits VALUES (3, '{"name": "peach"}');
  INSERT INTO fruits VALUES (4, '{"like": "banana"}');
  
  CREATE INDEX pgroonga_index ON fruits
    USING pgroonga (items pgroonga.jsonb_ops_v2);
  
  SET enable_seqscan = off;
  SET enable_indexscan = off;
  SET enable_bitmapscan = on;
  
  EXPLAIN (COSTS OFF)
  SELECT id, items
    FROM fruits
   WHERE items &? 'apple OR banana'
   ORDER BY id;
  
  SELECT id, items
    FROM fruits
   WHERE items &? 'apple OR banana'
   ORDER BY id;
  
  DROP TABLE fruits;
  