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Definition and Usage. The NULLIF () function returns NULL if two expressions are equal, otherwise it returns the first expression. Syntax. NULLIF (expr1, expr2) Parameter Values. Technical Details. More Examples. Example. Compare two expressions: SELECT NULLIF('Hello', 'Hello'); Try it Yourself » Example. Compare two expressions:
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Practice writing SQL to call data from the warehouse and sync it into Google Sheets in this 5 minute interactive demo. The complete guide to SQL NULLIF. Learn the syntax, parameters, use cases and find practical examples in the Hightouch SQL Dictionary.
This tutorial introduces you to the SQL NULLIF function and shows you how to add the if-else condition to your SQL queries.
8 maj 2022 · Syntax. The syntax goes like this: NULLIF (V1, V2) This is equivalent to the following CASE expression: CASE WHEN V1=V2 THEN NULL ELSE V1 END. Example. Here’s an example to demonstrate: SELECT NULLIF( 12, 12 ); Result: NULL. In this case, both arguments are identical and so the result is NULL.
The SQL NULLIF() function is, used to verify whether the two expressions are equal or not. It accepts two parameters expr1 and expr2 and returns NULL , if both the expression are equal; else returns the first expression.
27 paź 2016 · The syntax for the NULLIF function is: NULLIF(value1, value2) For example: SELECT NULLIF(1, 1); NULL. and. SELECT NULLIF(1, 0); 1. This is sugar syntax for the following CASE statement: CASE. WHEN value1 = value2. THEN NULL. ELSE value1. END. Now, let’s take a look at some usage examples for the NULLIF function.
14 wrz 2023 · NULLIF() The NULLIF function takes two arguments. If the two arguments are equal, then NULL is returned. Otherwise, the first argument is returned. Syntax: SELECT column(s), NULLIF(expression1, expression2) FROM table_name; Example: Consider the following Sales table . SELECT Store, NULLIF(Actual, Goal) FROM Sales; Output:
