sql - 我想使用 union all 进行插入，其中有一列从序列中获取值

Question

我试过了

INSERT INTO my_test_one (rollno,name, sirname, Dept) 
(select rollno_seq.nextval,'name1','sirname1', Dept 
   FROM my_test_one_backup 
  WHERE dept = 500      
UNION ALL
 select rollno_seq.nextval,'name1','sirname1', Dept 
   FROM my_test_one_backup 
  WHERE dept = 501 );

在执行此操作时出现错误

错误报告:

SQL Error: ORA-02287: sequence number not allowed here
02287. 00000 - "sequence number not allowed here"

Answer 1

在这种情况下，不要使用 UNION，而是使用单个 SELECT 和 OR:

SELECT rollno_seq.nextval,'name1','sirname1', Dept 
FROM my_test_one_backup 
WHERE dept = 500 OR dept = 501