OCP-1Z0-051-V9.02-3题

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 '%_'

D. 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。