How to handle ISNULL function in SQL || ISNULL Function in SQL || SQL ISNULL

Опубликовано: 05 Октябрь 2024
на канале: rejawebs

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In this course we will discuss about how to use NULL Function in SQL

The ISNULL is to be used when we do need to set value instead of null value.

Why do we need ISNULL Function in sql?

If you have to sum two or more number, but some of them are null value and we can't sum with the null value
For example:
If we have one number is 500 and another one is null
so 500+null=undefined
But if we use 500+ ISNULL(SecondNumber(here null),0)=SUM of two numbers

The SQL Syntax:
ISNULL(COLUMN_NAME, Replaed_Value))

So let's take a look in query windows.

SQL Query:
SELECT
SUM(ISNULL(GrossSalary,0)) AS TotalGrossSalary
FROM EmployeeInfo
GROUP BY
CurrentStatus

@rejawebs ‪@SQL‬ ‪@MSSQLDBAsLife‬ ‪@learningmssqlserver2891‬ ‪@MssqlservertutorialBlogspotInc‬

Search key:
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