In SQL, not equal operator is used to check whether two expressions equal or not. If it’s not equal then condition will be true and it will return not matched records. Both != … operator is not a ISO standard.

What does != Mean in query?

<> means not equal to, != also means not equal to.

Does != Work in SQL?

Here is the answer – Technically there is no difference between != and <>. Both of them work the same way and there is absolutely no difference in terms of performance or result.