Question

Which of the following syntax of the functions in SQL is used toadd column values? COUNT(*)

COUNT(expression)
SUM(expression)
MAX(expression)

Answer 1

Answer:

SUM(expression)

Explanation:

The SUM function is used to calculate the SUM of entries in a numeric column.

The syntax is as follows:

SELECT SUM(<column_name>)

FROM <table_name >

[WHERE <condition>];

For example:

Select SUM(age)

FROM employees;

COUNT is used to find the number of rows in the resultset.

MAX returns the maximum valued entry in the selected column.

Answer 2

The syntax of the functions in SQL that is used to add column values is: B. SUM(expression).

What is SQL?

SQL is an acronym for structured query language and it can be defined as a domain-specific programming language that is designed and developed for the management of various data that are saved in a relational or structured database.

This ultimately implies that, a structured query language (SQL) function can be used to communicate with a database in accordance with the American National Standards Institute (ANSI) standards such as:

• COUNT(expression)

• SUM(expression)

• MAX(expression)

Generally, the SUM(expression) is a structured query language (SQL) function that is used to add column values.

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