postgresql-json-fts.sql

CREATE TABLE bookdata (
  id  serial NOT NULL PRIMARY KEY,
  info json NOT NULL
)

CREATE INDEX bookdata_fts ON bookdata USING gin((to_tsvector('english',info->'title')));

INSERT INTO bookdata (info)
VALUES
 ( '{ "title": "The Tattooed Duke", "items": {"product": "Diaper","qty": 24}}'),
 ( '{ "title": "She Tempts the Duke", "items": {"product": "Toy Car","qty": 1}}'),
 ( '{ "title": "The Duke Is Mine", "items": {"product": "Toy Train","qty": 2}}'),
 ( '{ "title": "What I Did For a Duke", "items": {"product": "Toy Train","qty": 2}}'),
 ('{ "title": "King Kong", "items": {"product": "Toy Train","qty": 2}}');

SELECT info -> 'title' as title FROM bookdata
WHERE to_tsvector('english',info->'title') @@ to_tsquery('Duke');