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1. www.w3schools.com › SQL › func_sqlserver_isnullSQL Server ISNULL() Function - W3Schools

   www.w3schools.com › SQL › func_sqlserver_isnull

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   The ISNULL () function returns a specified value if the expression is NULL. If the expression is NOT NULL, this function returns the expression.

2. learn.microsoft.com › en-us › sqlISNULL (Transact-SQL) - SQL Server | Microsoft Learn

   learn.microsoft.com › en-us › sql

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   3 wrz 2024 · If a literal NULL is provided as check_expression, ISNULL returns the data type of the replacement_value. If a literal NULL is provided as check_expression and no replacement_value is provided, ISNULL returns an int .

3. www.sqlservertutorial.net › sql-server-system-functions › sql-server-isnull-functionSQL Server ISNULL Function

   www.sqlservertutorial.net › sql-server-system-functions › sql-server-isnull-function

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   Learn how to use the SQL Server ISNULL() function to replace NULL with a specified value. See syntax, examples and applications with numeric and character data types.

4. stackoverflow.com › questions › 334108How do I check if a Sql server string is null or empty

   stackoverflow.com › questions › 334108

   You can use ISNULL and check the answer against the known output: SELECT case when ISNULL(col1, '') = '' then '' else col1 END AS COL1 FROM TEST

5. www.geeksforgeeks.org › isnull-function-in-sql-serverSQL Server ISNULL () Function - GeeksforGeeks

   www.geeksforgeeks.org › isnull-function-in-sql-server

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   2 wrz 2024 · Learn how to use the ISNULL() function in SQL Server to replace NULL values with a specified replacement value. See examples, syntax, and important points about this function.

6. www.mssqltips.com › sqlservertip › 6776Using the SQL ISNULL() Function - SQL Server Tips

   www.mssqltips.com › sqlservertip › 6776

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   18 mar 2021 · Learn about the SQL Server ISNULL function and the many ways it can be used with TSQL statements.

7. www.sqlshack.com › sql-isnull-function-2SQL ISNULL function - SQL Shack

   www.sqlshack.com › sql-isnull-function-2

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   10 maj 2019 · Learn how to use SQL ISNULL function to replace NULL values in expressions or table records with examples. See the syntax, data type conversion, and difference with IS NULL.