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Mysql(Computer Science ) Questions and Answers
Home
Topic
Computer Science
Mysql
Question 1.
Which of the following is not a date function?
Month
Year
Now
Pow
Explanation:-
Answer: Option D. ->
Pow
Question 2.
The SQL keyword BETWEEN is used:
For ranges.
To limit the columns displayed.
As a wildcard.
None of the above
Explanation:-
Answer: Option A. ->
For ranges.
Question 3.
Which of the following can add a row to a table?
Add
Insert
Update
Alter
Explanation:-
Answer: Option B. ->
Insert
Question 4.
Which of the following is not a valid aggregate function?
COUNT
MIN
COMPUTE
MAX
Explanation:-
Answer: Option C. ->
COMPUTE
Question 5.
Which statement is used to modify data in a table?
CHANGE
MODIFY
UPDATE
SAVE AS
Explanation:-
Answer: Option C. ->
UPDATE
Question 6.
What SQL clause is used to restrict the rows returned by a query?
AND
WHERE
HAVING
FROM
Explanation:-
Answer: Option B. ->
WHERE
Question 7.
Which of the following is not a DML command?
Update
Insert into
Delete
Create Table
Explanation:-
Answer: Option D. ->
Create Table
Question 8.
Which SQL statement is used to return only different values?
SELECT DISTINCT
SELECT UNIQUE
SELECT DIFF
SELECT DIFFERENT
Explanation:-
Answer: Option A. ->
SELECT DISTINCT
Question 9.
SQL can be used to:
Create database structures only.
Query database data only.
Modify database data only.
All of the above can be done by SQL.
Explanation:-
Answer: Option D. ->
All of the above can be done by SQL.
Question 10.
With SQL, how do you select all the columns from a table named "Persons"?
SELECT * FROM Persons
SELECT Persons
SELECT [all] FROM Persons
SELECT *.Persons
Explanation:-
Answer: Option A. ->
SELECT * FROM Persons
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