<p>Here is a table with Firebird operators you probably don't know that exist:</p>
<table>
<thead>
<tr>
<th>Funny</th>
<th>Standard equivalent</th>
</tr>
</thead>
<tbody>
<tr>
<td><code>x !&#x3C; y</code></td>
<td><code>not (x &#x3C; y)</code></td>
</tr>
<tr>
<td><code>x ^&#x3C; y</code></td>
<td><code>not (x &#x3C; y)</code></td>
</tr>
<tr>
<td><code>x ~&#x3C; y</code></td>
<td><code>not (x &#x3C; y)</code></td>
</tr>
<tr>
<td><code>x !> y</code></td>
<td><code>not (x > y)</code></td>
</tr>
<tr>
<td><code>x ^> y</code></td>
<td><code>not (x > y)</code></td>
</tr>
<tr>
<td><code>x ~> y</code></td>
<td><code>not (x > y)</code></td>
</tr>
<tr>
<td><code>x != y</code></td>
<td><code>x &#x3C;> y</code></td>
</tr>
<tr>
<td><code>x ^= y</code></td>
<td><code>x &#x3C;> y</code></td>
</tr>
<tr>
<td><code>x ~= y</code></td>
<td><code>x &#x3C;> y</code></td>
</tr>
</tbody>
</table>
<br>


Funny	Standard equivalent
`x !< y`	`not (x < y)`
`x ^< y`	`not (x < y)`
`x ~< y`	`not (x < y)`
`x !> y`	`not (x > y)`
`x ^> y`	`not (x > y)`
`x ~> y`	`not (x > y)`
`x != y`	`x <> y`
`x ^= y`	`x <> y`
`x ~= y`	`x <> y`

Funny Firebird operators