SQL schema change(tables) : listen -> listen + listen_json

schema.sql

CREATE TABLE listen (
  id              SERIAL,
  user_id         VARCHAR NOT NULL,
  ts              TIMESTAMP WITH TIME ZONE NOT NULL,
  artist_msid     UUID NOT NULL,
  album_msid      UUID,
  recording_msid  UUID NOT NULL,
  listen_json     id,
);

CREATE TABLE listen_json (
  id              SERIAL PRIMARY KEY,
  raw_data        JSONB,
  raw_data_sha256 CHAR(64) NOT NULL,
);

ALTER TABLE listen ADD CONSTRAINT listen_listen_json_foreign_key FOREIGN KEY (listen_json) REFERENCES "listen_json" (id);