Search results
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: SELECT NULLIF('Hello', 'world');
- Try It Yourself
Edit the SQL Statement, and click "Run SQL" to see the...
- The Try-SQLSERVER Editor
Edit the SQL Statement, and click "Run SQL" to see the...
- Try It Yourself
NULLIF is equivalent to a searched CASE expression in which the two expressions are equal and the resulting expression is NULL. We recommend that you not use time-dependent functions, such as RAND(), within a NULLIF function.
This tutorial introduces you to the SQL NULLIF function and shows you how to add the if-else condition to your SQL queries.
10 cze 2023 · The NULLIF function checks two values and returns either the first value or NULL. The ISNULL function will replace a value with a different value if the first value is NULL. ISNULL is available in SQL Server and MySQL, but not Oracle or Postgres.
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)
8 maj 2022 · SQL NULLIF () Explained. Most major RDBMS s support the NULLIF() operator, which returns NULL if both of its arguments are equivalent. If the arguments not equivalent, NULLIF() returns the first argument. NULLIF() is a SQL-standard feature (it’s included in the ISO/IEC 9075 specification).
This SQL Server tutorial explains how to use the NULLIF function in SQL Server (Transact-SQL) with syntax and examples. In SQL Server (Transact-SQL), the NULLIF function compares expression1 and expression2.
