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全部博文（487）
发布时间：2019-03-06 10:33:22
You need to list the employees in DEPARTMENT_ID 30 in a single row, ordered by HIRE_DATE.Which query will provide the required output?FROM employeesWITHIN GROUP ORDER BY hire_date;FROM employeesORDER BY hire_date;WITHIN GROUP (ORDER BY hire_date) "Emp_list", MIN(hire_date) .........【阅读全文】
发布时间：2019-03-06 10:00:50
View the Exhibit and examine the structure of the CUSTOMERS table.Evaluate the following two queries:WHERE (UPPER(cust_last_name) LIKE 'A%' ORUPPER(cust_last_name) LIKE 'C%')SQL> SELECT cust_last_name, cust_credit_limit FROM customersAND cust_credit_limit < 10000;A) Only th.........【阅读全文】
发布时间：2019-03-05 14:22:52
Evaluate the following SQL commands:INCREMENT BY 10MAXVALUE 9999SQL>CREATE TABLE ord_itemsitem_no NUMBER(3),expiry_date date CHECK (expiry_date > SYSDATE),CONSTRAINT ord_fk FOREIGN KEY(ord_no) REFERENCES orders(ord_no));A) You cannot use SYSDATE in the condition of a CH.........【阅读全文】
发布时间：2019-03-05 13:07:19
Which two statements are true regarding the USING and ON clauses in table joins?B) A maximum of one pair of columns can be joined between two tables using the ON clause.D) The WHERE clause can be used to apply additional conditions in SELECT statements containing the ON or the USING clause.........【阅读全文】
发布时间：2019-03-05 11:32:05
Examine the structure of the BOORSTRANSACTIONS table:Examine the SQL statement:MEMBER_ID IN ('A101', 'A102');A) It displays details only for members who have borrowed before today with RM as TRANSACTION_TYPE.C) It displays details for members who have borrowed before today with RM .........【阅读全文】
