试题详情
- 单项选择题下列哪个函数可以把一个列中的所有值相加求和?()
A、MAX
B、SUM
C、COUNT
D、AVG
- B
关注下方微信公众号,在线模考后查看
热门试题
- You are d
- The database is conf
- What type̳
- The EMP table conta
- Identify four&
- The database admini
- A web br
- ()是ORACLE最基本的逻辑存储单位。
- You work
- Some data
- Which two̳
- Management has aske
- Which three
- You are
- Which two statements
- Identify two correct
- While performi
- Management has aske
- In which scenario wo
- 数据字典信息被存放在哪类文件中()