Computer scienceFundamentalsSQL and DatabasesBasics SQLFunctions and operations

ISNULL and NULLIF functions

Use of ISNULL() functions in SQL

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What is the use of the ISNULL() function in MySQL?

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It checks if two values are equal and returns NULL if true

It checks if there are any null values in the database and returns NULL if true

It replaces NULL values with a specified value

Checks if a column/expression is null and returns a specified value if true

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