What are some alternative methods to negate a database query in PHP if != or <> are not working as expected?

If != or <> are not working as expected to negate a database query in PHP, an alternative method is to use the NOT operator in combination with the comparison operator. For example, instead of using !=, you can use NOT = to achieve the same result.

// Original query using !=
$query = &quot;SELECT * FROM table WHERE column != &#039;value&#039;&quot;;

// Alternative query using NOT =
$query = &quot;SELECT * FROM table WHERE NOT column = &#039;value&#039;&quot;;