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全部博文（487）
发布时间：2019-03-07 10:53:49
Examine the structure proposed for the TRANSACTIONS table:Which two statements are true regarding the creation and storage of data in the above table structure?and fractions of seconds.C) The TRANS_VALIDITY column would have a maximum size of one character.E) The CUST_STATUS column.........【阅读全文】
发布时间：2019-03-07 10:11:49
The CUSTOMERS table has the following structure:You need to write a query that does the following tasks:2. Only those customers whose income level has a value should be considered.Which statement accomplishes all the required tasks?FROM customersB) SELECT cust_first_name, cust_.........【阅读全文】
发布时间：2019-03-06 11:30:30
View the Exhibit and examine the structure of the ORDERS and ORDER_ITEMS tables.SELECT oi.order_id, product_id, order_dateUSING(order_id);A) The statement would not execute because the table alias prefix is not used in the USING clause.C) The statement would not execute because tab.........【阅读全文】
发布时间：2019-03-06 11:05:43
View the Exhibit and examine the data in the PRODUCTS table.A) ALTER TABLE productsB) ALTER TABLE productsC) ALTER TABLE productsD) ALTER TABLE productsAnswer：D......【阅读全文】
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】
