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1. www.w3schools.com › sql › sql_isnullSQL ISNULL(), NVL(), IFNULL() and COALESCE() Functions -...

   www.w3schools.com › sql › sql_isnull

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   Learn how to use the SQL NVL() function to replace NULL values with alternative values in Oracle and other databases. Compare NVL() with ISNULL(), COALESCE(), and IIF() functions in different SQL products.

2. www.oracletutorial.com › oracle-comparison-functions › oracle-nvlOracle NVL() Function By Practical Examples - Oracle Tutorial

   www.oracletutorial.com › oracle-comparison-functions › oracle-nvl

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   Learn how to use the Oracle NVL() function to replace null with a more meaningful value in SQL queries. See syntax, examples, and comparison with CASE and COALESCE functions.

3. database.guide › sql-nvl-explainedSQL NVL() Explained - Database.Guide

   database.guide › sql-nvl-explained

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   8 cze 2022 · Learn how to use the NVL() function in SQL to replace NULL values with other values. See the syntax and examples for different DBMSs that support NVL() or its synonyms.

4. docs.oracle.com › en › databaseNVL - Oracle Help Center

   docs.oracle.com › en › database

   NVL lets you replace null (returned as a blank) with a string in the results of a query. If expr1 is null, then NVL returns expr2. If expr1 is not null, then NVL returns expr1. The arguments expr1 and expr2 can have any data type.

5. www.geeksforgeeks.org › sql-general-functions-nvl-nvl2-decode-coalesce-nullifSQL General Functions - GeeksforGeeks

   www.geeksforgeeks.org › sql-general-functions-nvl-nvl2-decode-coalesce-nullif

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   8 sie 2024 · Learn about the SQL general functions, including NVL, NVL2, DECODE, COALESCE, NULLIF, LNNVL and NANVL. See syntax, examples and FAQs for each function.

6. stackoverflow.com › questions › 950084sql - Oracle Differences between NVL and Coalesce - Stack...

   stackoverflow.com › questions › 950084

   4 cze 2009 · NVL and COALESCE are used to achieve the same functionality of providing a default value in case the column returns a NULL. The differences are: NVL accepts only 2 arguments whereas COALESCE can take multiple arguments. NVL evaluates both the arguments and COALESCE stops at first occurrence of a non-Null value.

7. www.techonthenet.com › oracle › functionsOracle / PLSQL: NVL Function - TechOnTheNet

   www.techonthenet.com › oracle › functions

   The Oracle/PLSQL NVL function lets you substitute a value when a null value is encountered. Syntax. The syntax for the NVL function in Oracle/PLSQL is: NVL( string1, replace_with ) Parameters or Arguments. string1. The string to test for a null value. replace_with. The value returned if string1 is null. Returns.