试题详情
- 单项选择题对数值型变量V_NUM，进行四舍五入，保留小数点后两位，以下操作正确的是（）
A、SUBSTR（V_NUM，1，2）
B、TRUNC（V_NUM，2）
C、TRUNC（V_NUM，-2）
D、ROUND（V_NUM，2）
E、ROUND（V_NUM，-2）
- D
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