115. 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 the BETWEEN operator cannot be used in the HAVING clause.
C. It returns an error because WHERE and HAVING clauses cannot be used in the same SELECT
statement.
D. It returns an error because WHERE and HAVING clauses cannot be used to apply conditions on the
same column.
Answer: A
答案解析：
sh@TEST0924> SELECT cust_city, COUNT(cust_last_name) FROM customers
2 WHERE cust_credit_limit > 1000
3 GROUP BY cust_city
4 HAVING AVG(cust_credit_limit) BETWEEN 5000 AND 6000;
CUST_CITY COUNT(CUST_LAST_NAME)
------------------------------ ---------------------
Joinville 98
Neuss 241
Clermont-l'Herault 202
Ingolstadt 159
...
Sliedrecht 17
207 rows selected.