Question

我试图将数据插入到一个表中，该表可以用作报告，以查看每个数据库上次成功备份的时间。正在插入的表具有name，input_type，status，start_time，end_time和duration列，而我的SQL目前是：

INSERT INTO schema.Backup_Report (input_type, status, start_time, end_time, duration)  
SELECT *
FROM (SELECT INPUT_TYPE, 
             STATUS, 
             START_TIME, 
             END_TIME, 
             elapsed_seconds/60 as duration_in_min 
      FROM v$RMAN_BACKUP_JOB_DETAILS 
      ORDER BY end_time desc)
WHERE rownum = 1
AND input_type = 'DB INCR'
AND STATUS = 'COMPLETED';

这很有效，但我在查找如何插入名称列时遇到了麻烦，因为我尝试过使用union：

SELECT * 
FROM (SELECT name from v$database union
SELECT INPUT_TYPE, 
             STATUS, 
             START_TIME, 
             END_TIME, 
             elapsed_seconds/60 as duration_in_min 
      FROM v$RMAN_BACKUP_JOB_DETAILS 
      ORDER BY end_time desc)

这给了我一个ora-00904错误，因为我认为它不像order by end_time部分。

Answer 1

SELECT  *
FROM    ( SELECT * 
          FROM (SELECT INPUT_TYPE, 
                       STATUS, 
                       START_TIME, 
                       END_TIME, 
                       elapsed_seconds/60 as duration_in_min 
                FROM   v$RMAN_BACKUP_JOB_DETAILS 
                ORDER BY
                       END_TIME DESC )
          WHERE ROWNUM     = 1
          AND   INPUT_TYPE = 'DB INCR'
          AND   STATUS     = 'COMPLETED' )
        CROSS JOIN
        ( SELECT name from v$database );

在这种情况下如何从多个地方插入一个表（Oracle）？

1 个答案: