标签:recently 194 QUESTION SALES version EMP table retrieves
You plan to use the Flashback Drop feature to recover the SALES_EMP table that was dropped in error. No other table with the sname name exists in the SH schema, which owns the table. You query the RECYCLEBIN and file multiple entries for the SALES_EMP table: SQL> SELECT object_name, original_name, droptime FROM recyclebin; OBJECT_NAME ORIGINAL_NAME DROPTIME ------------------------------------------------------------------ ------------------------------------- -------------------------------------------- BIN$/msldfsoidhjfknsjdsdkjflksdjkfjsdksfl==$0 SALES_EMP 2012-12-07:12:28:55 BIN$/SDFLKSJLDFsdkjfjsdfjkaldofhohgo==$0 SALES_EMP 2013-12-07:10:11:38 BIN$/kkljsdkfjisdjnlksjflkassdfkjklkljfljaslk==$0 SALES_EMP 2012-12-07:09:08:18 You then issue this statement to recover the table: SQL> FLASHBACK TABLE sales_emp TO BEFORE DROP; What would be the result? A. It retrieves the most recently dropped version of teh table from the recyclebin for witch undo is still available. B. It retrieves the most recently dropped version of the table. C. It retrieves the least recently dropped version of the table. D. It retrieves the least recently droppe version of the table from the recyclebin for which undo is still available. E. It returns an error because the table name in the OBJECT_NAME columns not specified. Correct Answer: B标签:recently,194,QUESTION,SALES,version,EMP,table,retrieves 来源: https://blog.csdn.net/jisen_huang/article/details/117898969
本站声明: 1. iCode9 技术分享网(下文简称本站)提供的所有内容,仅供技术学习、探讨和分享; 2. 关于本站的所有留言、评论、转载及引用,纯属内容发起人的个人观点,与本站观点和立场无关; 3. 关于本站的所有言论和文字,纯属内容发起人的个人观点,与本站观点和立场无关; 4. 本站文章均是网友提供,不完全保证技术分享内容的完整性、准确性、时效性、风险性和版权归属;如您发现该文章侵犯了您的权益,可联系我们第一时间进行删除; 5. 本站为非盈利性的个人网站,所有内容不会用来进行牟利,也不会利用任何形式的广告来间接获益,纯粹是为了广大技术爱好者提供技术内容和技术思想的分享性交流网站。