OCP的071考试难考?以前确实不容易通过,但现在我们对071考试题库进行了收集整理,并给出了答案,已经帮助很多考生顺利通过了071考试。
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071题库整理-第23题、choose the best answer:
You need to display the first names of all customers from the CUSTOMERS table that contain the character 'e' and have the character 'a' in the second last position.
Which query would give the required output?
A) SELECT cust_first_name
FROM customers
WHERE INSTR(cust_first_name, 'e')<>'' AND
SUBSTR(cust_first_name, -2, 1)='a';
B) SELECT cust_first_name
FROM customers
WHERE INSTR(cust_first_name, 'e')<>0 AND
SUBSTR(cust_first_name, -2, 1)='a';
C) SELECT cust_first_name
FROM customers
WHERE INSTR(cust_first_name, 'e')<>0 AND
SUBSTR(cust_first_name, LENGTH(cust_first_name),-2)='a';
D) SELECT cust_first_name
FROM customers
WHERE INSTR(cust_first_name, 'e')IS NOT NULL AND
SUBSTR(cust_first_name, 1,-2)='a';
Answer:B
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