2024年11月22日 · NULLIF returns the first expression if the two expressions are not equal. If the expressions are equal, NULLIF returns a null value of the type of the first expression. NULLIF is equivalent to a searched CASE expression in which the two expressions are equal and the resulting expression is NULL.

The NULLIF() function returns NULL if two expressions are equal, otherwise it returns the first expression. Syntax

2025年3月4日 · NULLIF and COALESCE - Teradata VantageCloud Lake Lake - Database Reference Deployment VantageCloud Edition Lake Product Teradata VantageCloud Lake Release Number Published February 2025 ft:locale en-US ft:lastEdition 2025-03-04 dita:mapPath ohi1683672393549.ditamap dita:ditavalPath pny1626732985837.ditaval dita:id …

The NULLIF function compares two values and returns NULL if they are equal. Here’s the syntax of the NULLIF function: NULLIF(value1,value2); Code language: SQL (Structured Query Language) ( sql )

2024年6月25日 · The NULLIF() function compares two expressions and returns NULL if they are equal; otherwise, it returns the first expression. It is different from the ISNULL operator, which checks if a value is NULL, and from the ISNULL() function, which replaces NULL values with a specified value.

SQL Server NULLIF expression overview. The NULLIF expression accepts two arguments and returns NULL if two arguments are equal. Otherwise, it returns the first expression. The following shows the syntax of the NULLIF expression: NULLIF(expression1, expression2) Code language: SQL (Structured Query Language) (sql)

2022年4月25日 · In this very brief tutorial, we’ll discuss the SQL Server NULLIF system function and provide examples of how to use it. We’ll discuss these topics: What is the SQL Server NULLIF system function? The syntax of NULLIF; Examples of NULLIF; Tips, tricks, and links; Let’s get into it. 1. What is the SQL Server NULLIF system function?

NULLIF is a function available in most RDBMS to compare 2 expressions and determine if they are same or different. It can compare both numeric and string values specified directly or retuned by an expression.

The NULLIF expression in SQL Server is a useful function that allows you to compare two expressions and return a null value if they are equal. It helps you handle situations where you want to avoid division by zero errors or when you need to substitute a specific value with NULL.

2023年6月10日 · The NULLIF function checks two values and returns either the first value or NULL. The IFNULL function will replace a value with a different value if the first value is NULL. IFNULL is available in MySQL, but not Oracle, SQL Server, or Postgres.