We can use both SQL Not Equal operators <> and != to do inequality test between two expressions. Both operators give the same output.

### Can we use != In SQL?

SQL Not Equal Operator: != When the expressions return different types of data, (for example, a string and a number), type conversion is performed. The SQL Not Equal comparison operator (!=) is used to compare two expressions. For example, 15 != 17 comparison operation uses SQL Not Equal operator (!=)

### Is != and <> same in SQL?

If != and <> both are the same, which one should be used in SQL queries? Here is the answer – You can use either != or <> both in your queries as both technically same but I prefer to use <> as that is SQL-92 standard.

### What does != In SQL mean?

Not Equal Operator: != Evaluates both SQL expressions and returns 1 if they are not equal and 0 if they are equal, or NULL if either expression is NULL. If the expressions return different data types, (for instance, a number and a string), performs type conversion.

### Can we use != NULL in SQL?

<> is Standard SQL-92; != is its equivalent. Both evaluate for values, which NULL is not — NULL is a placeholder to say there is the absence of a value. Which is why you can only use IS NULL / IS NOT NULL as predicates for such situations.