PostgreSQL SQL

CREATE TABLE IF NOT EXISTS assets (
  name         text PRIMARY KEY,
  content_type text NOT NULL,
  body         bytea NOT NULL
);

INSERT INTO assets (name, content_type, body)
VALUES ('pixel.gif', 'image/gif', decode('R0lGODlhAQABAIAAAP///wAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw==', 'base64'))
ON CONFLICT (name) DO UPDATE SET body = EXCLUDED.body;