3. You need to extract details of those products in the SALES table where the PROD_ID column
contains the string '_D123'.
Which WHERE clause could be used in the SELECT statement to get the required output?
A. WHERE prod_id LIKE '%_D123%' ESCAPE '_'
B. WHERE prod_id LIKE '%\_D123%' ESCAPE '\'
C. WHERE prod_id LIKE '%_D123%' ESCAPE '%_'Answer: B
答案解析:
ESCAPE子句为指定转译字符,因为‘_’下滑线在LIKE子句中指的是任意一个字符,所以需要把_’下滑线进行转译。