试题详情
- 单项选择题在定义游标时使用的FOR UPDATE子句的作用是（）。
A、执行游标
B、执行SQL语句的UPDATE语句
C、对要更新表的列进行加锁
D、都不对
- C
关注下方微信公众号，在线模考后查看
热门试题
- （）是由PL/SQL所提供的系统异常。当
- The SPFILE&ens
- The CUSTOMERS table
- ENCRYPT_TS is an enc
- Which statemen
- Your organizat
- You have
- Which setting&
- In which
- Which three statemen
- What are
- Which two̳
- What are three actio
- Which of
- Which three are DATE
- Oracle NetQ
- Which two statements
- Given: Whichregula
- The DBA issues this
- Which of