CREATE TABLE dbo.EmployeeInfoĮmployeeId INT PRIMARY KEY IDENTITY(1,1), Let’s set up a sample table to explore MS SQL Not Equal operator. You should use the operator as it follows the ISO standard. The only difference is that ‘ ’ is in line with the ISO standard while ‘ !=’ does not follow ISO standard. You can use both MS SQL Not Equal operators and != to do an inequality test between two expressions. For example, 4144 comparison operation uses MS SQL Not Equal operator ( ) between two expressions 41 and 44ĭifference between SQL Not Equal Operator and != You use MS SQL Not Equal comparison operator ( ) to compare two expressions. In this blog, you will explore both operators and differences in these as well. You can have the following comparison operators in SQL. The NOT operator can also be combined with other operators, such as the greater than (>) or less than ( ( Greater than) the total number of blogs written by Sylvia. It is often used in conjunction with the equal (=) operator to check for inequality between two values.įor example, the following query uses the NOT operator and the equal operator to select all rows from the "Customers" table where the "Country" is not equal to 'USA': SELECT * FROM Customers In SQL Server, the NOT operator can be used to negate the results of a condition or expression. MS SQL Not equal is used to return a set of rows ( from a specific table column ) after making sure that two expressions placed on either side of the NOT EQUAL TO ( ) operator are not equal. MS SQL is not a null predicate to test if a particular value is null. According to the three-valued logic of SQL, the result of null = null is not true but unknown. In MS SQL null is not equal ( = ) to anything-not even to another null. != and no difference in terms of performance or result. In SQL Server, Is not equal operator is used to check whether two expressions ( and !=) are equal or not.
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