sorting the allowed keywords and adding between

Signed-off-by: iifawzi <iifawzie@gmail.com>

Author: iifawzi

src/Components/Expression.php

@@ -32,22 +32,21 @@ class Expression extends Component
      * @var array<string, int>
      */
     private static $ALLOWED_KEYWORDS = [
+        'AND' => 1,
         'AS' => 1,
-        'DUAL' => 1,
-        'REGEXP' => 1,
+        'BETWEEN' => 1,
         'CASE' => 1,
+        'DUAL' => 1,
         'DIV' => 1,
-        'AND' => 1,
+        'IS' => 1,
+        'MOD' => 1,
+        'NOT' => 1,
+        'NOT NULL' => 1,
+        'NULL' => 1,
         'OR' => 1,
+        'OVER' => 1,
+        'REGEXP' => 1,
         'XOR' => 1,
-        'NOT' => 1,
-        'MOD' => 1,
-
-        'OVER' => 2,
-
-        'IS' => 3,
-        'NOT NULL' => 4,
-        'NULL' => 4,
     ];
 
     /**