OCP-1Z0-051 第113題 GROUP BY, TO_CHAR的應用

阿新 • • 發佈：2019-01-14

Examine the structure of the ORDERS table:
Name                Null                Type
ORDER_ID           NOT NULL           NUMBER(12)
ORDER_DATE         NOT NULL           TIMESTAMP(6)
CUSTOMER_ID        NOT NULL           NUMBER(6)
ORDER_STATUS                          NUMBER(2)
ORDER_TOTAL                           NUMBER(8,2)

You want to find the total value of all the orders for each year and issue the following command:
SQL>SELECT TO_CHAR(order_date,'rr'), SUM(order_total)
FROM orders
GROUP BY TO_CHAR(order_date,'yyyy');
Which statement is true regarding the outcome?
A. It executes successfully and gives the correct output.
B. It gives an error because the TO_CHAR function is not valid.
C. It executes successfully but does not give the correct output.
D. It gives an error because the data type conversion in the SELECT list does not match the data type conversion in the GROUP BY clause.

答案：D

OCP-1Z0-051 第113題 GROUP BY, TO_CHAR的應用

Examine the structure of the ORDERS table:Name Null Type ORDER_ID NOT NULL NUMBER(12) ORDER_DATE

OCP-1Z0-051 第64題 order by使用別名注意事項

View the Exhibit and examine the data in the PROMO_CATEGORY and PROMO_COST columns of the PROMOTIONS table. Evaluate the following two queries: SQ

OCP-1Z0-051 第141題子查詢的應用

View the Exhibit and examine the structure of CUSTOMERS and GRADES tables. You need to display names and grades of customers who have the highest credit li

OCP-1Z0-051 第140題子查詢中使用GROUP BY注意事項

Examine the structure of the PRODUCTS table:Name Null Type PROD_ID NOT NULL NUMBER(4) PROD_NAME

OCP-1Z0-051 第174題事務的組成

Which statement is true regarding transactions? (Choose all that apply.) A. A transaction can consist only of a set of DML and DDL statements.B. A part or

OCP-1Z0-051 第51題 SYNONYM同義詞

Which statement is true regarding synonyms? A. Synonyms can be created only for a table. B. Synonyms are used to reference only those tables that are owned

OCP-1Z0-051 第54題

View the Exhibit and examine the structure of the CUSTOMERS table. Evaluate the query statement: SQL> SELECT cust_last_name, cust_city, cust_credit_limi

OCP-1Z0-051 第2題檢視的WITH CHECK OPTION選項

SQL> CREATE VIEW v4 2 AS SELECT prod_id, cust_id, SUM(quantity_sold) FROM SALES 3 WHERE time_id <= SYSDATE - 2*365 4 GROUP BY prod_id, cust_id

OCP-1Z0-051 第45題 SEQUENCE(序列)的注意事項

Which two statements are true about sequences created in a single instance database? (Choose two.) A. The numbers generated by a sequence can be used only

OCP-1Z0-051 第37題 drop table

一、原題 You issued the following command to drop the PRODUCTS table: SQL> DROP TABLE products; What is the implication of this command? (

OCP-1Z0-051 第43題序列的cycle選項

Evaluate the following CREATE SEQUENCE statement: CREATE SEQUENCE seq1 START WITH 100 INCREMENT BY 10 MAXVALUE 200 CYCLE NOCACHE; The SEQ1 sequence has gen

OCP-1Z0-051 第62題 where萬用字元

EMPNO ENAME ---------- ---------- 7876 ADAMS 7499 ALLEN 7698 BLAKE 7782 CLARK 7902 FORD 7900 JAMES 7566 JO

OCP-1Z0-051 第172題事務savepoint的注意事項

The SQL statements executed in a user session are as follows:SQL> CREATE TABLE product (pcode NUMBER(2), pname VARCHA

OCP-1Z0-051 第46題約束和索引

Which statements are correct regarding indexes? (Choose all that apply.)A. When a table is dropped, the corresponding indexes are automatically dropped.B.

OCP-1Z0-051 第142題巢狀子查詢的應用

View the Exhibit and examine the structure of the PRODUCTS table. Evaluate the following query:SQL> SELECT prod_name FROM products WHERE pr

OCP-1Z0-051 第131題 LEFT OUTER JOIN和RIGHT OUTER JOIN的用法

View the Exhibit and examine the structure of the PRODUCT, COMPONENT, and PDT_COMP tables. In PRODUCT table, PDTNO is the primary key. In COMPONENT table,

OCP-1Z0-051 第149題子查詢中ALL的應用

View the Exhibits and examine the structures of the COSTS and PROMOTIONS tables. Evaluate the following SQL statement:SQL>SELECT prod_id FROM cost

OCP-1Z0-051 第1題 CTAS語句建表注意事項

一、原題 View the Exhibit and examine the structure of the SALES, CUSTOMERS, PRODUCTS, and TIMES tables.The PROD_ID column is the foreign ke

OCP-1Z0-051 第52題列別名

View the Exhibit and examine the structure of the PRODUCTS table. Using the PRODUCTS table, you issue the following query to generate the names, current li

OCP-1Z0-051 第47題索引

View the Exhibit and examine the structure of ORD and ORD_ITEMS tables. The ORD_NO column is PRIMARY KEY in the ORD table and the ORD_NO and ITEM_NO column