用oracle编写求1的阶乘到10的阶乘的和

以下是使用Oracle SQL编写的求1的阶乘到10的阶乘的和的语句：

WITH nums AS (
  SELECT LEVEL AS num 
  FROM DUAL 
  CONNECT BY LEVEL <= 10
) 
SELECT SUM(
  CASE WHEN num = 1 THEN 1 
       WHEN num = 2 THEN 2 
       WHEN num = 3 THEN 6 
       WHEN num = 4 THEN 24 
       WHEN num = 5 THEN 120 
       WHEN num = 6 THEN 720 
       WHEN num = 7 THEN 5040 
       WHEN num = 8 THEN 40320 
       WHEN num = 9 THEN 362880 
       WHEN num = 10 THEN 3628800 
  END
) AS factorial_sum
FROM nums;

注：以上语句利用Oracle的`LEVEL`和`CONNECT BY`语句生成从1到10的数字序列，并使用`CASE`语句计算每个数字的阶乘，最后求和得到结果。