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Oracle Database: SQL Fundamentals I 1z0-051
Exam Number/Code : 1z0-051
Exam Name : Oracle Database: SQL Fundamentals I
One year free update
Once failed,100% refund
Questions and Answers : 130Q&As
Update Time : 2013-4-1
Price : $79.00

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Oracle Database 11g: SQL Fundamentals I 1Z0-051 Exam Topics
Reporting Aggregated Data Using the Group Functions
Identify the available group functions
Describe the use of group functions
Group data by using the GROUP BY clause
Include or exclude grouped rows by using the HAVING clause

Displaying Data from Multiple Tables
Write SELECT statements to access data from more than one table using equijoins and nonequijoins
Join a table to itself by using a self-join
View data that generally does not meet a join condition by using outer joins
Generate a Cartesian product of all rows from two or more tables

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1. Which statement is true regarding the COALESCE function?
A. It can have a maximum of five expressions in a list.
B. It returns the highest NOT NULL  value in the list for all rows.
C. It requires that all expressions in the list must be of the same data type.
D. It requires that at least one of the expressions in the list must have a NOT NULL  value.
Answer: C

2. Examine the data in the LIST_PRICE and MIN_PRICE columns of the PRODUCTS table:
LIST_PRICE    MIN_PRICE
10000         8000
20000
30000         30000
Which two expressions give the same output? (Choose two.)
A. NVL(NULLIF(list_price, min_price), 0)
B. NVL(COALESCE(list_price, min_price), 0)
C. NVL2(COALESCE(list_price, min_price), min_price, 0)
D. COALESCE(NVL2(list_price, list_price, min_price), 0)
Answer: BD

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