NULL Definition & Meaning - Merriam-Webster

www.merriam-webster.com/dictionary/null
The meaning of NULL is having no legal or binding force : invalid. How to use null in a sentence. Did you know?

c# - What does null! statement mean? - Stack Overflow

stackoverflow.com/questions/54724304/what-does-null-statement-mean
It can be used on a type to control Nullability, it is then called the "Null Forgiving Operator". Basically, null! applies the ! operator to the value null. This overrides the nullability of the value null to non-nullable, telling the compiler that null is a "non-null" type.

A quick and thorough guide to 'null': what it is, and how you should use it

www.freecodecamp.org/news/a-quick-and-thorough-guide-to-null-what-it-is-and-how-you-should-use-it-d170cea62840/
Learn what null means in different programming languages, how it is implemented in memory, and when to use it or avoid it in your source code. This article explains null for reference types, not for value types, with examples in Java.

Everything you wanted to know about $null - PowerShell

learn.microsoft.com/en-us/powershell/scripting/learn/deep-dives/everything-about-null?view=powershell-7.6     2025-04-16T00:00:00.0000000
What is NULL? You can think of NULL as an unknown or empty value. A variable is NULL until you assign a value or an object to it. This can be important because there are some commands that require a value and generate errors if the value is NULL.

null - JavaScript | MDN - MDN Web Docs

developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/null     2025-10-28T00:00:00.0000000
The null keyword refers to the null primitive value, which represents the intentional absence of any object value.

What Does Null Mean? | The Word Counter

thewordcounter.com/meaning-of-null/
What does the word null mean? According to the American Heritage Dictionary of the English Language and Collins English Dictionary, the word null is an adjective that means invalid, or having zero quantities. You will often hear this word used in the phrase null and void when it comes to legal force. The pronunciation of null is nĘŚl.

A quick and thorough guide to 'null': what it is, and how ... - Medium

medium.com/free-code-camp/a-quick-and-thorough-guide-to-null-what-it-is-and-how-you-should-use-it-d170cea62840
What is the meaning of null? How is null implemented? When should you use null in your source code, and when should you not use it?

Null - Wikipedia

en.wikipedia.org/wiki/Null
Null is a term that can have various meanings in science, technology, mathematics, arts, and people. It can refer to a zero value, a missing data, a null pointer, a null character, or a null device, among others.

SQL COALESCE (), IFNULL (), ISNULL (), NVL () Functions

www.w3schools.com/sql/sql_isnull.asp
Operations involving NULL values can sometimes lead to unexpected results. SQL has some built-in functions to handle NULL values, and the most common functions are: COALESCE() - The preferred standard. (Works in MySQL, SQL Server and Oracle) IFNULL() - (MySQL) ISNULL() - (SQL Server) NVL() - (Oracle) IsNull() - (MS Access)

Nulls - docs.oracle.com

docs.oracle.com/en/database/oracle/oracle-database/26/sqlrf/Nulls.html
Nulls with Comparison Conditions To test for nulls, use only the comparison conditions ISNULL and ISNOTNULL. If you use any other condition with nulls and the result depends on the value of the null, then the result is UNKNOWN. Because null represents a lack of data, a null cannot be equal or unequal to any value or to another null. However, Oracle considers two nulls to be equal when ...
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