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SQL Questions and Answers (Q&A)

T. Perez
Answered: May 10, 2018
SQL is the most widely used database language. SQL is a domain specific language used in programming and designed for managing data held in a relational database management system. It is useful...Read More

6 Answers

3226 views
Carice Snow, Motivator
Answered: Dec 14, 2018
The correct answer is B. When trying to select all the records from a table named "Persons" where the value of the column "FirstName" starts with an 'a' with SQL, SELECT FROM Persons WHERE...Read More

3 Answers

2092 views
G.Carol
Answered: Feb 19, 2018
There are different clauses and tools that are used to modify columns and rows in order to edit tables as you need. Each has a precise function and as the names aren’t self-exploratory, you...Read More

3 Answers

1811 views
John Smith
Answered: Jul 07, 2020
SELECT FirstName FROM Persons

1 Answer

1199 views
Melissajanuary
Answered: Jul 07, 2020
Multiple columns or expressions can be compared between the main query and subquery.
Main query and subquery can get data from different tables.
Subqueries can contain GROUP BY and ORDER...Read More

1 Answer

827 views
E. Austin
Answered: Dec 14, 2018
The answer is D. A commonly asked question by SQL users or those learning how to use SQL is if you can return all the records from a table named "Persons" sorted descending by "FirstName" with...Read More

2 Answers

735 views
lifetodeath
Answered: Jul 07, 2020
All are true.

1 Answer

590 views
Gaurav.
Answered: Jul 07, 2020
3. UPDATE Persons SET LastName= Nilsen WHERE LastName= Hansen

1 Answer

566 views
Snudurupati
Answered: Jul 07, 2020
Both 2 & 3

1 Answer

545 views
Kabirkhanna
Answered: Jul 07, 2020
DELETE FROM TABLE studentinfo WHERE sname= Hari Prasad ;

1 Answer

463 views
Kiranjot
Answered: Jul 07, 2020
The AS SQL clause is used change the name of a column in the result set or to assign a name to a derived column.

1 Answer

461 views
Cerebralrust
Answered: Jul 07, 2020
Definition of the condition to be met for the rows to be returned.

1 Answer

454 views
John Adney
Answered: Dec 16, 2016

Update more than one row at a time.

2 Answers

433 views
E. Stanley, Technical writer
Answered: Sep 20, 2018
The answer to this is D. From the name itself, you can already make a guess on what the union clause can do. It has the ability to combine two different statements. Once these statements are...Read More

4 Answers

411 views

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