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SQL Questions and Answers (Q&A)

How to Delete records from studentinfo table with name of student Hari Prasad?
Olive landon, Health science specialist
Answered: Sep 21, 2020
The right response to this inquiry deletes records from student info table with the name Hari Prasad. This answer is known as an erase sentence structure. When playing out this capacity, it is...Read More

4 Answers

9991 views
How do you select all the records from a table named "Persons" where the value of the column "FirstName" starts with an "a" with SQL?
M. Jabrowsky, Bank Manager
Answered: Sep 28, 2020
The SQL LIKE clause is made use to relate value to comparable values using wildcard operators. Each time you want to look for records in a table based on certain string patterns such as the...Read More

6 Answers

5852 views
Can you state some facts about SQL?
S. Barnes, Chauffeur
Answered: Sep 22, 2020
Null values are displayed last in ascending sequences. SQL means Structured Query Language. SQL allows you to access and manipulate databases; it became the standard of the American Nation...Read More

11 Answers

3843 views
What is the purpose of SQL AS clause?
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

9 Answers

3280 views
How do you select a column named "FirstName" from a table named "Persons" with SQL?
John Smith
Answered: Nov 18, 2024
SELECT FirstName FROM Persons

1 Answer

2722 views
How can you return all the records from a table named "Persons" sorted descending by "FirstName" with SQL?
E. Austin
Answered: Dec 14, 2018
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 SQL? The answer is...Read More

2 Answers

2105 views
What is true about the COUNT function?
lifetodeath
Answered: Nov 18, 2024
All are true.

1 Answer

1582 views
Which SQL statement inserts data into a table called Projects?
John Smith
Answered: Nov 18, 2024
INSERT INTO Projects (ProjectName, ProjectDescription) VALUES ( Content Development , Website content development project )

1 Answer

1582 views
Which functions can be used on both numeric as well as non-numeric data?
lifetodeath
Answered: Nov 18, 2024
...Read More

1 Answer

1493 views
Which statements gets the total value of the column 'Price' in the 'Sales' table?
Cerebralrust
Answered: Nov 18, 2024
SELECT SUM(Price) FROM Sales

1 Answer

1439 views
Which of the following is not an Oracle DML function?
Asgari.sematec
Answered: Nov 18, 2024
TRUNCATE

Do not confuse TRUNCATE with TRUNC. Truncate is used to remove all rows from an Oracle table.

1 Answer

1373 views
How can you change "Hansen" into "Nilsen" in the "LastName" column in the Persons table?
Gaurav.
Answered: Nov 18, 2024
3. UPDATE Persons SET LastName= Nilsen WHERE LastName= Hansen

1 Answer

1285 views
Is SQL worth learning 2020?
Melissajanuary
Answered: Nov 18, 2024
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

1247 views
Can you write down SQL statement that selects the total number of orders from the Sales table?
Danny R. Glover, Editor
Answered: Jul 11, 2018
Take note that you want to gather information about the total number of orders. This means that you need to choose the select count from sales which is letter B in the choices. This will allow...Read More

3 Answers

1110 views
What is/are true for a Primary Key Constraint?
Snudurupati
Answered: Nov 18, 2024
Both 2 & 3

1 Answer

1007 views

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