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SQL Questions and Answers (Q&A)

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

3570 views
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

3477 views
W. Kaye, Ex-Marine
Answered: Oct 12, 2020
SQL is a programming language used for data management held in a relational database management system. The SQL AS is a keyword that is employed in the ascription of a nickname or an alias to a...Read More

9 Answers

2524 views
John Smith
Answered: Oct 29, 2020
SELECT FirstName FROM Persons

1 Answer

1767 views
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

1296 views
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

1174 views
Melissajanuary
Answered: Oct 29, 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

1075 views
lifetodeath
Answered: Oct 29, 2020
All are true.

1 Answer

862 views
John Adney
Answered: Dec 16, 2016

Update more than one row at a time.

2 Answers

762 views
Gaurav.
Answered: Oct 29, 2020
3. UPDATE Persons SET LastName= Nilsen WHERE LastName= Hansen

1 Answer

671 views
Cerebralrust
Answered: Oct 29, 2020
Definition of the condition to be met for the rows to be returned.

1 Answer

609 views
Njoki
Answered: Jul 07, 2017

This is the correct answer.

SELECT dept_id, MIN(salary), MAX(salary) FROM employees GROUP BY dept_id HAVING MIN(salary) <5000 AND MAX(salary) >15000.

3 Answers

497 views
E. Stanley, Technical writer
Answered: Sep 20, 2018
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 combined, it will form a set...Read More

4 Answers

485 views

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