here are the new lunched odesk SQL test answers :
1) What does SQL stand for?
a)
Strong Question Language
b)
Structured Question Language
c)
Structured Query Language - correct answer
2) Which
SQL statement is used to extract data from a database?
a)
GET
b)
OPEN
c)
EXTRACT
d)
SELECT - correct answer
e)
QUERY
3) Which
SQL statement is used to update data in a database?
a)
UPDATE - correct answer
b)
SAVE AS
c)
MODIFY
d)
SAVE
4) Which
SQL statement is used to delete data from a database?
a)
TRUNCATE
b)
DELETE - correct answer
c)
REMOVE
5) Which
SQL statement is used to insert new data in a database?
a)
ADD RECORD
b)
ADD INTO
c)
INSERT - correct answer
d)
ADD NEW
6) With
SQL, how do you select a column named "FirstName" from
a table named "Persons"?
a)
EXTRACT FirstName FROM Persons
b)
SELECT FirstName FROM Persons - correct answer
c)
SELECT Persons.FirstName
7) With
SQL, how do you select all the columns from a table named
"Persons"?
a)
SELECT [all] FROM Persons
b)
SELECT All Persons
c)
SELECT *.Persons
d)
SELECT * FROM Persons - correct answer
8) With
SQL, how do you select all the records from a table named
"Persons" where the value of the column "FirstName"
is "Peter"?
a)
SELECT [all] FROM Persons WHERE FirstName='Peter'
b)
SELECT * FROM Persons WHERE FirstName LIKE 'Peter'
c)
SELECT [all] FROM Persons WHERE FirstName LIKE 'Peter'
d)SELECT
* FROM Persons WHERE FirstName='Peter' - correct answer
9) With
SQL, how do you select all the records from a table named
"Persons" where the value of the column "FirstName"
starts with an "a"?
a)
SELECT * FROM Persons WHERE FirstName='%a%'
b)
SELECT * FROM Persons WHERE FirstName LIKE '%a'
c)
SELECT * FROM Persons WHERE FirstName='a'
d)
SELECT * FROM Persons WHERE FirstName LIKE 'a%' - correct
answer
e)
SELECT * FROM Persons WHERE FirstName='a'"
10) The
OR operator displays a record if ANY conditions listed are true.
The AND operator displays a record if ALL of the conditions
listed are true
a)
True - correct answer
b)
False
11) With
SQL, how do you select all the records from a table named
"Persons" where the "FirstName" is "Peter"
and the "LastName" is "Jackson"?
a)
SELECT * FROM Persons WHERE FirstName LIKE 'Peter' AND LastName
LIKE 'Jackson'
b)
SELECT * FROM Persons WHERE FirstName='Peter' AND
LastName='Jackson' - correct answer
c)
SELECT FirstName='Peter', LastName='Jackson' FROM Persons
12) With
SQL, how do you select all the records from a table named
"Persons" where the "LastName" is
alphabetically between (and including) "Hansen" and
"Pettersen"?
a)
SELECT LastName>'Hansen' AND LastName<'Pettersen' FROM
Persons
b)
SELECT * FROM Persons WHERE LastName BETWEEN 'Hansen' AND
'Pettersen' - correct answer
c)
SELECT * FROM Persons WHERE LastName>'Hansen' AND
LastName<'Pettersen'
13) Which
SQL statement is used to return only different values?
a)
SELECT UNIQUE
b)
SELECT INDENTITY
c)
SELECT DIFFERENT
d)
SELECT DISTINCT - correct answer
14) Which
SQL keyword is used to sort the result-set?
a)
SORT BY
b)
ORDER
c)
ORDER BY - correct answer
d)
SORT
15) With
SQL, how can you return all the records from a table named
"Persons" sorted descending by "FirstName"?
a)
SELECT * FROM Persons SORT BY 'FirstName' DESC
b)
SELECT * FROM Persons ORDER BY FirstName DESC - correct
answer
c)
SELECT * FROM Persons ORDER FirstName DESC
d)
SELECT * FROM Persons SORT 'FirstName' DESC
16) With
SQL, how can you insert a new record into the "Persons"
table?
a)
INSERT INTO Persons VALUES ('Jimmy', 'Jackson') - correct
answer
b)
INSERT ('Jimmy', 'Jackson') INTO Persons
c)
INSERT VALUES ('Jimmy', 'Jackson') INTO Persons
17) With
SQL, how can you insert "Olsen" as the "LastName"
in the "Persons" table?
a)
INSERT INTO Persons (LastName) VALUES ('Olsen') - correct
answer
b)
INSERT ('Olsen') INTO Persons (LastName)
c)
INSERT INTO Persons ('Olsen') INTO LastName
18) How
can you change "Hansen" into "Nilsen" in the
"LastName" column in the Persons table?
a)
UPDATE Persons SET LastName='Hansen' INTO LastName='Nilsen'
b)
UPDATE Persons SET LastName='Nilsen' WHERE LastName='Hansen' -
correct answer
c)
MODIFY Persons SET LastName='Hansen' INTO LastName='Nilsen
d)
MODIFY Persons SET LastName='Nilsen' WHERE LastName='Hansen'
19) With
SQL, how can you delete the records where the "FirstName"
is "Peter" in the Persons Table?
a)
DELETE FROM Persons WHERE FirstName = 'Peter' - correct
answer
b)
DELETE ROW FirstName='Peter' FROM Persons
c)
DELETE FirstName='Peter' FROM Persons
20) With
SQL, how can you return the number of records in the "Persons"
table?
a)
SELECT COLUMNS() FROM Persons
b)
SELECT COUNT(*) FROM Persons - correct answer
c)
SELECT COLUMNS(*) FROM Persons
d)
SELECT COUNT() FROM Persons
21) Given
an employees table as follows: empid name managerid a1 bob NULL
b1 jim a1 B2 tom a1 What value will select count(*) from
employees return?
a)
1
b)
2
c)
3 - correct answer
d)
none of the above
22) The
result of a SELECT statement can contain duplicate rows.
a)
True - correct answer
b)
False
23) Sometimes
the expression "select count(*)" will return fewer rows
than the expression "select count(value)".
a)
True
b)
False - correct answer
24) What
type of lock will deny users any access to a table?
a)
EXPLICIT
b)
IMPLICIT
c)
EXCLUSIVE - correct answer
d)
SHARED
e)READ
ONLY
25) Which
of the following is the correct SQL statement to use to remove
rows from a table?
a)
DROP
b)
REMOVE ROW
c)
DELETE - correct answer
d)
DELETE ROW
26) The
only way to join two tables is by using standard, ANSI syntax.
a)
True
b)
False - correct answer
27) A
NULL value is treated as a blank or 0.
a)
True
b)
False - correct answer
28) The
left outer join is one type of outer join. Another one is the.
a)
right
b)
full
c)
right outer
d)
full outer
e)all
of the above - correct answer
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