public int update() {
session.getUser().checkAdmin();
session.commit(true);
Database db = session.getDatabase();
User user = db.getUser(authorization);
user.checkAdmin();
if (db.findSchema(schemaName) != null) {
if (ifNotExists) {
return 0;
}
throw DbException.get(ErrorCode.SCHEMA_ALREADY_EXISTS_1, schemaName);