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ISNULL (Transact-SQL) - SQL Server | Microsoft Learn
https://learn.microsoft.com/en-us/sql/t-sql/functions/isnull-transact-sql?view=sql-server-ver16
May 23, 2023 · A. Using ISNULL with AVG. The following example finds the average of the weight of all products. It substitutes the value 50 for all NULL entries in the Weight column of the Product table. USE AdventureWorks2022; GO SELECT AVG(ISNULL(Weight, 50)) FROM Production.Product; GO Here is the result set.
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SQL Server ISNULL() Function - W3Schools
https://www.w3schools.com/SQL/func_sqlserver_isnull.asp
Definition and Usage. The ISNULL () function returns a specified value if the expression is NULL. If the expression is NOT NULL, this function returns the expression.
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SQL Server ISNULL Function
https://www.sqlservertutorial.net/sql-server-system-functions/sql-server-isnull-function/
SQL Server ISNULL() function overview. The SQL Server ISNULL() function replaces NULL with a specified value. The following shows the syntax of the ISNULL() function: ISNULL(expression, replacement) Code language: SQL (Structured Query Language) (sql) The ISNULL() function accepts two arguments: expression is an expression of any type that is ...
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SQL ISNULL function - SQL Shack
https://www.sqlshack.com/sql-isnull-function-2/
May 10, 2019 · The SQL Server ISNULL function returns the replacement value if the first parameter expression evaluates to NULL. SQL Server converts the data type of replacement to data type of expression. Let’s explore SQL ISNULL with examples. Example 1: SQL Server ISNULL function in an argument. In this example, SQL ISNULL function returns the second ...
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ISNULL – SQL Tutorial
https://www.sqltutorial.net/isnull.html
In SQL Server, the ISNULL function is used to replace NULL values with a specified replacement value. It is a convenient way to handle NULLs in SQL queries and expressions. The ISNULL function takes two parameters—the expression to be checked for NULL and the value to be returned if the expression is NULL.
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SQL ISNULL Function Examples - SQL Server Tips
https://www.mssqltips.com/sqlservertip/6776/sql-isnull-function-examples/
A NULL value is a special marker in column to denote that a value does not exist. It is important to understand that a NULL column value is different than having a blank (empty string) or 0 value in a column. eg. ' ' or (empty string) <> NULL, 0 <> NULL. Let’s take a look at a few examples to illustrate these points.
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IS NULL (Transact-SQL) - SQL Server | Microsoft Learn
https://learn.microsoft.com/en-us/sql/t-sql/queries/is-null-transact-sql?view=sql-server-ver16
Aug 10, 2023 · Return Code Values. If the value of expression is NULL, IS NULL returns TRUE; otherwise, it returns FALSE. If the value of expression is NULL, IS NOT NULL returns FALSE; otherwise, it returns TRUE.
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SQL ISNULL() Explained - Database.Guide
https://database.guide/sql-isnull-explained/
May 24, 2022 · SQL ISNULL () Explained. Posted on May 24, 2022 by Ian. Some RDBMS s provide an ISNULL () function that can be used when dealing with potentially null values. MySQL, MariaDB, and Oracle Database each have an ISNULL () function that returns 1 if its argument is null, and 0 if it’s not.
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SQL Server ISNULL() - Replace NULL Values
https://www.tutorialsteacher.com/sqlserver/isnull-function
SELECT ISNULL(NULL, 'Hello') AS Result. The ISNULL () function returns the input expression value if it is not a NULL. In the following example, the given expression 'SQL Server' is not a null value and hence ISNULL returns the expression as it is without replacing it. Example: ISNULL ()
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SQL Server: ISNULL Function - TechOnTheNet
https://www.techonthenet.com/sql_server/functions/isnull.php
Let's look at some SQL Server ISNULL function examples and explore how to use the ISNULL function in SQL Server (Transact-SQL). For example: SELECT ISNULL(NULL, 'TechOnTheNet.com'); Result: 'TechOnTheNet.com'. SELECT ISNULL('CheckYourMath.com', 'TechOnTheNet.com'); Result: 'CheckYourMath.com'. SELECT ISNULL(NULL, 45);
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