code: public static Sql getSql(String query, Map<String, Object> parameters) {
  		SqlBuilder builder = new SqlBuilder();
  		String sql = builder.replaceVariables(query, parameters);
  		return new Sql(sql, parameters);
  	}
docs: 构建SQL对象
  
  @param query 原SQL语句
  @param parameters 参数表
  
  @return SQL对象