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Not Equal To (Transact SQL) - traditional

  • Artikkeli

Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance Azure Synapse Analytics Analytics Platform System (PDW) SQL analytics endpoint in Microsoft Fabric Warehouse in Microsoft Fabric SQL database in Microsoft Fabric

Compares two expressions (a comparison operator). When you compare nonnull expressions, the result is TRUE if the left operand is not equal to the right operand; otherwise, the result is FALSE. If either or both operands are NULL, see the topic SET ANSI_NULLS (Transact-SQL).

Transact-SQL syntax conventions

Syntax

expression <> expression

Arguments

expression
Is any valid expression. Both expressions must have implicitly convertible data types. The conversion depends on the rules of data type precedence.

Result Types

Boolean

Examples

A. Using <> in a simple query

The following example returns all rows in the Production.ProductCategory table that do not have value in ProductCategoryID that is equal to the value 3 or the value 2.

-- Uses AdventureWorks  
  
SELECT ProductCategoryID, Name  
FROM Production.ProductCategory  
WHERE ProductCategoryID <> 3 AND ProductCategoryID <> 2;

Here's the result set.

ProductCategoryID Name  
----------------- --------------------------------------------------  
1                 Bikes  
4                 Accessories  
  
(2 row(s) affected)

See Also

Data Types (Transact-SQL)
Operators (Transact-SQL)
Comparison Operators (Transact-SQL)