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发布时间:2019-02-18 14:48:55

14、(6-13) choose the best answer:View the Exhibit and examine the structure of the ORDERS table.Which UPDATE statement is valid?A) UPDATE ordersSET order_date = '12-mar-2007'AND order_total = TO_NUMBER(NULL)WHERE order_id = 2455;B) UPDATE ordersSET order_date = '12-mar-2007',order_to.........【阅读全文】

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发布时间:2019-02-18 14:11:50

13、(6-7) choose twoWhich two statements are true regarding operators used with subqueries? (Choose two.)A) =ANY and =ALL operators have the same functionality.E) The NOT IN operator is equivalent to is NULL.C) The <ANY operator means less than the maximum.D) The NOT operator can be used with.........【阅读全文】

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发布时间:2019-02-15 15:27:25

12、(5-12)choose two:Examine the data in the CUSTOMERS table:You want to list all cities that have more than one customer along with the customer details.Evaluate the following query:SQL>SELECT c1.custname, c1.cityFROM Customers c1______Customers c2ON (c1.city=c2.city AND c1.custname<>c2.cus.........【阅读全文】

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发布时间:2019-02-15 13:19:30

11、(5-8) choose the best answer:Examine the structure of the BOOKS_TRANSACTIONS table.You want to update this table such that BOOK_ID is set to 'INVALID' for all rows where no MEMBER_IDhas been entered.Examine this partial SQL statement:SQL> UPDATE books_transactionsSET book.........【阅读全文】

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发布时间:2019-02-15 11:38:09

10、(5-6) choose the best answer:Examine the structure of the EMPLOYEES table:There is a parent/child relationship between EMPLOYEE_ID and MANAGER_ID.You want to display the name, joining date, and manager for all the employees.Newly hired employees are yet to be assigned a department or a man.........【阅读全文】

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