大數(shù)據(jù)就業(yè)實(shí)戰(zhàn)培訓(xùn) Oracle就業(yè)實(shí)戰(zhàn)培訓(xùn)
071考試題庫之前是比較穩(wěn)定的，但隨著Oracle的調(diào)整，071考試不斷的增加新的考題，增加了考試的難度，所以我們專門收集整理了這些考試，并對這些考題進(jìn)行解析，希望可以對考生有幫助。
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071考試-第27題、choose the best answer:
View the Exhibit and examine the structure of the CUSTOMERS table.
Evaluate the following SQL statement:
SQL> SELECT cust_city, COUNT(cust_last_name)
FROM customers
WHERE cust_credit_limit > 1000
GROUP BY cust_city
HAVING AVG(cust_credit_limit) BETWEEN 5000 AND 6000;
Which statement is true regarding the outcome of the above query?
A) It executes successfully.
B) It returns an error because WHERE and HAVING clauses cannot be used in the same SELECT statement.
C) It returns an error because WHERE and HAVING clauses cannot be used to apply conditions on the same column.
D) It returns an error because the BETWEEN operator cannot be used in the HAVING clause.
Answer:A
(驗證過)
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