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SAS3 - Quiz1-Final

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OT for sas3
Xtine Ramos
Quiz by Xtine Ramos, updated more than 1 year ago
Xtine Ramos
Created by Xtine Ramos over 8 years ago
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Question 1

Question
Which of the these ORDER BY clauses will display the results ordered by decreasing Salary and then by increasing Name?
Answer
  • order by Salary desc, Name
  • order by descending Salary, Name
  • order by desc Salary, Name
  • order by desc Salary, ascending Name

Question 2

Question
You cannot use SAS formats and labels to customize PROC SQL output
Answer
  • True
  • False

Question 3

Question
What column modifier is used to alter the appearance of the values in that column?
Answer
  • FORMAT=
  • LABEL=
  • LABELX=
  • INFORMAT=

Question 4

Question
Which of the ff. is not true regarding PROC SQL?
Answer
  • PROC SQL is terminated with a RUN statement
  • Each statement is processed individually.
  • The PROC SQL statement does not need to be repeated with each query.
  • No PROC PRINT step is needed to view query results.

Question 5

Question
To eliminate duplicate rows in query results, which keyword should be used?
Answer
  • DISTINCT
  • VALIDATE
  • SINGLE
  • NODUP

Question 6

Question
The ALL keyword is true only if the comparison is true for all returned values
Answer
  • True
  • False

Question 7

Question
SQL uses set operators to combine tables horizontally
Answer
  • True
  • False

Question 8

Question
SQL uses joins to combine tables vertically
Answer
  • True
  • False

Question 9

Question
Full joins include all rows from both tables, even if there are no matching rows in either table
Answer
  • True
  • False

Question 10

Question
To familiarize yourself with the columns in a table, which statement should be used:
Answer
  • DESCRIBE
  • PROPERTY
  • CONTENT
  • FEATURES

Question 11

Question
Inner joins enables a maximum of 256 tables to be joined at the same time.
Answer
  • True
  • False

Question 12

Question
SQL subqueries can return calues to be used in an outer query's FROM clause
Answer
  • True
  • False

Question 13

Question
Which keyword is used to check the SELECT statement syntax?
Answer
  • VALIDATE
  • NOERROR
  • CHECK
  • DETERMINE

Question 14

Question
A type of joins that returns only the matching rows
Answer
  • INNER JOIN
  • OUTER JOIN
  • LEFT JOIN
  • RIGHT JOIN

Question 15

Question
A subquery can return several rows of data but must only return values from a single column
Answer
  • True
  • False

Question 16

Question
Given the following SELECT statement, describe the incorrect syntax********************************************************SELECT a,b,c FROM tblx ORDER BY b WHERE tblx.a > 10;
Answer
  • arrangement of clauses
  • missing comma
  • missing semi-colon
  • none of the above

Question 17

Question
It is created by placing a query expression in a FROM clause where a table name would normally be used
Answer
  • IN LINE VIEW
  • subquery
  • virtual table
  • nested query

Question 18

Question
Correlated subqueries can be evaluated independently
Answer
  • True
  • False

Question 19

Question
If a summary function specifies only one column name, the statistic is calculated down the columb (across rows)
Answer
  • True
  • False

Question 20

Question
In a correlated subquery, the inner query provides information so that the subquery resolves successfully
Answer
  • True
  • False

Question 21

Question
A condition that will evaluate to true if the subquery returns no data
Answer
  • NOT EXIST
  • NOT IN
  • IN
  • EXIST

Question 22

Question
When a SELECT list contains both a column created by a summary function and a column that is not summarized, by default, the summarized data is appended to each row of the original data table (remerged) in order to produce the output.
Answer
  • True
  • False

Question 23

Question
The COALESCE function returns the value of the first missing argument
Answer
  • True
  • False

Question 24

Question
If the summary function specifies more than one column, the statistic is calculated for the row (using values from the listed columns)
Answer
  • True
  • False

Question 25

Question
The COUNT function returns the number of columns returned by a query
Answer
  • True
  • False

Question 26

Question
If you specify the ANY keyword before a subquery, the comparison is true if it is false for any of the values that the subquery returns
Answer
  • True
  • False

Question 27

Question
Views often save space, because a view is usually quite small compared with the data that it accesses
Answer
  • True
  • False

Question 28

Question
To search for actual percent or underscore characters in your text using the LIKE operator, you must use an:
Answer
  • ESCAPE CLAISE
  • FREE CLAUSE
  • LIKE CLAUSE
  • EXIT CLAUSE

Question 29

Question
SQL subqueries can return values to be used in an outer query's FROM clause
Answer
  • True
  • False

Question 30

Question
What column modifier is used to alter the appearance of the values in that column?
Answer
  • FORMAT=
  • LABELX=
  • LABEL=
  • INFORMAT=

Question 31

Question
Find the incorrect syntax on the ff. select statement:**********************proc sql; SELECT Employee_ID, Employee_Gender, Salary, from orion.Employee_Payroll where Employee_Gender='F' order by Salary desc; quit;
Answer
  • exceeds use of comma
  • missing semi-colon
  • missing quote
  • missing comma

Question 32

Question
Which of the following is not a feature of SELECT statement
Answer
  • queries to two tables
  • specifies an order for the data
  • selects data that meets certain conditions
  • formats the data

Question 33

Question
How many tables can be combines using a single inner join?
Answer
  • 256
  • 10
  • 2
  • 5

Question 34

Question
The HAVING clause is processed before the GROUP BY clause and determines which groups will be displayed
Answer
  • True
  • False

Question 35

Question
Which of the follwing statements is true when processing an inner join in PROC SQL
Answer
  • Builds the cartesian product of all tables listed and applies the WHERE clause to limit the rows returned
  • applies the WHERE clause to limit the rows returned then build the Cartesian product of all the tables listed and
  • builds the Cartesian product of all the tables listed and display the results
  • no need to build the Cartesian product of all the tables listed and applies the WHERE clause to limit the rows returned

Question 36

Question
Outer joins can only be performed on two tables at a time
Answer
  • True
  • False

Question 37

Question
Which of the following is not true regarding subqueries
Answer
  • Can return single row with multiple columns
  • return values to be used in the outer query’s WHERE or HAVING clause
  • can return single or multiple values
  • must return only a single column.

Question 38

Question
A query corresponds to a single SELECT statement within a DATA step
Answer
  • True
  • False

Question 39

Question
The IN CLAUSE specifies the criteria in outer joins
Answer
  • True
  • False

Question 40

Question
To create and populate a table with the rows from an SQL query, which of the following statement should be used:
Answer
  • CREATE TABLE
  • CREATE QUERY
  • CREATE VIEW
  • CREATE POPULATE

Question 41

Question
The EQUAL operator does not accept any expression that resolves to more than a single value
Answer
  • True
  • False

Question 42

Question
The WHERE clause is processed before a GROUP BY clause and determines which individual rows are available for grouping
Answer
  • True
  • False

Question 43

Question
Which of the following WHERE clauses correctly selects rows with a Job_Code value that begins with a underscore?
Answer
  • where Job_Code like '/_%' escape '/'
  • where Job_Code contains '_%'
  • where Job_Code like '%_' exit '/_'
  • where Job_Code like '_%'

Question 44

Question
Which of these DATA step statements is used to combine tables horizontally?
Answer
  • MERGE
  • SET
  • JOINS
  • APPEND

Question 45

Question
In an ORDER BY clause, order the query results by specifying the following except for:
Answer
  • a combination of any of the above, with individual items separated by semi-colon
  • an expression
  • a column name or a number representing the position of an item in the SELECT list
  • any column name from any table in the FROM clause, even if the column is not in the SELECT list

Question 46

Question
Correlated subqueries use very few resources and are inexpensive to execute
Answer
  • True
  • False

Question 47

Question
When using an askterisk for the select list, you can specify the FEEDBACK option to write the expanded SELECT statement to the SAS log
Answer
  • True
  • False

Question 48

Question
A subquery can return severa rows of data but must only return values from a single column
Answer
  • True
  • False

Question 49

Question
Left joins include all rows from the second table, even if there are no matching rows in the first table
Answer
  • True
  • False

Question 50

Question
What column modifier is used to alter the appearance of the values in that column?
Answer
  • FORMAT=
  • LABEL=
  • LABELX=
  • INFORMAT=
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