CREATE TABLE SessionCookie (
  id INTEGER NOT NULL PRIMARY KEY DEFAULT 1,
  value TEXT NOT NULL,
  username TEXT
);

get:
SELECT value FROM SessionCookie WHERE id = 1;

getUsername:
SELECT username FROM SessionCookie WHERE id = 1;

upsert:
INSERT OR REPLACE INTO SessionCookie(id, value, username) VALUES (1, ?, ?);

deleteAll:
DELETE FROM SessionCookie;
