73. Which tasks can be performed using SQL functions that are built into Oracle database ? (Choose
three .)
A. f inding the remainder of a division
B. a dding a number to a date for a resultant date value
C. c omparing two expressions to check whether they are equal
D. c hecking whether a specified character exists in a given string
E. r emoving trailing, leading, and embedded characters from a character string
Answer: ACD
哪个任务能用oracle内置函数完成?
A 求余 mod
B date加个数字生成个日期值 add_months
C 比较两个值是否相等 nullif
D 查找给定字符串中是否存在某个字符串 instr
E 去字符串除头尾以及里面的字符。这个不行