SQL Examples SQL Editor SQL Quiz SQL Exercises SQL Server SQL Syllabus SQL Study Plan SQL Bootcamp SQL Certificate SQL Training ... The NULLIF() function returns NULL if two expressions are equal, otherwise it returns the first expression.

Copy CREATE TABLE budgets ( dept TINYINT, current_year DECIMAL(10,2), previous_year DECIMAL(10,2) ); INSERT INTO budgets VALUES(1, 100000, 150000); INSERT INTO budgets VALUES(2, NULL, 300000); INSERT INTO budgets VALUES(3, 0, 100000); INSERT INTO budgets VALUES(4, NULL, 150000); INSERT INTO budgets VALUES(5, 300000, 300000); SELECT dept, NULLIF(current_year, previous_year) AS LastBudget FROM budgets; Here's the result set. dept LastBudget ---- ----------- 1 100000.00 2 null 3 0.00 4 null 5 null · CASE (Transact-SQL) decimal and numeric (Transact-SQL) System Functions (Transact-SQL)

July 10, 2020 - The following example uses the NULLIF expression. It returns NULL because the first character string is equal to the second one: SELECT NULLIF('Hello', 'Hello') result; Code language: SQL (Structured Query Language) (sql)

SQL Examples SQL Editor SQL Quiz SQL Exercises SQL Server SQL Syllabus SQL Study Plan SQL Bootcamp SQL Certificate SQL Training ... The NULLIF() function compares two expressions and returns NULL if they are equal.

In SQL Server (Transact-SQL), the NULLIF function compares expression1 and expression2. If expression1 and expression2 are equal, the NULLIF function returns NULL.

July 15, 2025 - Appendix C in Oracle Database Globalization Support Guide for the collation determination rules, which define the collation NULLIF uses to compare characters from expr1 with characters from expr2, and for the collation derivation rules, which define the collation assigned to the return value of this function when it is a character value ... The following example selects those employees from the sample schema hr who have changed jobs since they were hired, as indicated by a job_id in the job_history table different from the current job_id in the employees table:

July 23, 2025 - NULLIF() function in SQL Server is used to check if the two specified expressions are equal or not. If two arguments passed to a function are equal, the NULLIF() function returns Null to us. NULLIF() function operates like a Like a CASE Statement.

SELECT NULLIF('SQL', 'NoSQL') AS NotEqual, NULLIF('SQL', 'SQL') AS Equal Try it live

December 29, 2023 - This result includes product names, but it replaces 'Discontinued' with NULL using the NULLIF function. Replacing specific values with NULL in query results. Suppressing or hiding data based on specific conditions. Handling equality as a distinct case. The SQL NULLIF function is a standard SQL feature and is available in most relational database management systems (RDBMS) that support SQL.

June 18, 2015 - This function can also be expressed as an IF statement (using general syntax, not SQL). 1if (expr1 = expr2) then 2 return null; 3else 4 return expr1; 5end if; The NULLIF function checks two values and returns either the first value or NULL.

March 10, 2023 - SELECT AVG(COALESCE(NULLIF(sales_target,sales_current),0.00)) AS 'Avg target to be achieved' FROM sales; In the above example, we have first used NULLIF to return a null value if the salesperson has completed his or her targets and return ...

February 8, 2025 - The NULLIF function is equivalent to the following searched CASE expression: CASE WHEN value1 = value1 THEN NULL ELSE value1 ENDCode language: SQL (Structured Query Language) (sql) The following example uses the NULLIF function with two arguments are 100:

SELECT a, b, NULLIF(a,b) FROM i; --------+--------+-------------+ a | b | nullif(a,b) | --------+--------+-------------+ 0 | 0 | [NULL] | 0 | 1 | 0 | 0 | [NULL] | 0 | 1 | 0 | 1 | 1 | 1 | [NULL] | 1 | [NULL] | 1 | [NULL] | 0 | [NULL] | [NULL] | 1 | [NULL] | [NULL] | [NULL] | [NULL] | --------+--------+-------------+ Copy · Snowflake Python APIs · Snowflake REST APIs · Snowflake CLI · See all interfaces · On this page · Syntax · Arguments · Returns · Collation details · Examples ·

SQL Server NULLIF with sql server, install visual studio, install sql server, architecture, management studio, data types, db operations, login database, create database, select database, drop database, create table, delete tabel, update table, min function, max function, sum function, sql ...

April 25, 2025 - For example, the following statement returns a null value because the first argument equals the second one. SELECT NULLIF(100,100) -- null FROM dual;Code language: SQL (Structured Query Language) (sql)

September 11, 2024 - Yes, the NULLIF function can be used in conjunction with any other conditional operator or function. For example, it is often used within CASE expressions to handle specific conditions and return appropriate results. PostgreSQL NULLIF is a standard SQL function that returns NULL if two arguments ...

In SQL Server, the NULLIF() expression checks the value of two specified expressions. It returns a null value if they’re equal, otherwise it returns the first expression. ... Here, both expressions are equal, and so the result is a null value. Here’s what happens when the expressions are not equal: ... This time the first value is returned. Here’s an example ...

String Functions: ASCII CHAR_LENGTH ... CAST COALESCE CONNECTION_ID CONV CONVERT CURRENT_USER DATABASE IF IFNULL ISNULL LAST_INSERT_ID NULLIF SESSION_USER SYSTEM_USER USER VERSION SQL Server Functions...