A UNION query is which of the following?

A Combines the output from no more than two queries and must include the same number of columns
B Combines the output from no more than two queries and does not include the same number of columns
C Combines the output from multiple queries and must include the same number of columns
D Combines the output from multiple queries and does not include the same number of columns

Correct Answer: Combines the output from multiple queries and must include the same number of columns

A single UNION can combine only 2 sql query at a time.
Bissoy MCQ
#SQL Server #Joins

Related Questions

A correlated subquery is where the outer query depends on data from the inner query.
A True
B False
In which schedule to the constitution of India is the division of powers between the union and the states in terms of the union list and the state list laid down?
A Fifth schedule
B Sixth schedule
C Seventh schedule
D Fourth schedule
Who can make laws for Union Territories on any subject under the three lists Viz. union list, state list and concurrent list?
A The President of India alone
B The Parliament
C The Prime Minister of India
D Home Minister of India
The Union Government on 22 May 2016 appointed whom as the new Lieutenant Governor of the Union Territory (UT) of Pondicherry
A Kiran Bedi
B Kalyan Singh
C Ram Naik
D Mukul Sangma
In __________, the First National Trade union organization (The All India Trade Union Congress (AITUC)) was established
A 1904
B 1908
C 1917
D 1920
Which one of the following methods is responsible for sending the query to the database?
A query()
B send_query()
C sendquery()
D mysqli_query()
Which one of the following method is used to retrieve the number of rows affected by an INSERT, UPDATE, or DELETE query?
A num_rows()
B affected_rows()
C changed_rows()
D mysqli_affected_rows()
Which of the following media query describe the ratio of the width to the height of the media?
A ratio
B aspect-ratio
C deviceaspect-ratio
D resolution
Which of the following media query describe describes the height of the screen or full height of the output page?
A height
B aspect-ratio
C device-height
D resolution
Which of the following Media Query describe the ratio of the device width to the device height of the media?
A device-aspect
B device-aspect-ratio
C device-aspect-query
D none of the mentioned

Next steps