试题详情
- 单项选择题在查询中执行数据过滤是通过查询语句的()子句来完成的,通过过滤数据,可以只查询满足要求的数据,减少数据查询的量,提高查询性能。
A、WHERE
B、FROM
C、SUQUERY
D、JOIN
- A
关注下方微信公众号,在线模考后查看
热门试题
- Your boss̳
- ROW-based replicati
- Automatic Shar
- Which SQL statement
- You need to produce
- Given: What is
- Oracle内置程序包由()用户所有。
- When a job exceeds t
- The()writes th
- On your Oracle Data
- You are
- What component
- What will&ensp
- 以下关于表空间的叙述正确的是()
- Which are DML statem
- Given: What is
- The NLS_SORT paramet
- A company that make
- Which statemen
- The user