reverted addition of $where property

framework/db/Query.php

@@ -66,12 +66,6 @@ class Query extends Component implements QueryInterface
      */
     public $from;
     /**
-     * @var string|array query condition. This refers to the WHERE clause in a SQL statement.
-     * For example, `age > 31 AND team = 1`.
-     * @see where()
-     */
-    public $where;
-    /**
      * @var array how to group the query results. For example, `['company', 'department']`.
      * This is used to construct the GROUP BY clause in a SQL statement.
      */

framework/db/QueryTrait.php

@@ -21,7 +21,7 @@ use yii\base\NotSupportedException;
 trait QueryTrait
 {
     /**
-     * @var array query condition. This refers to the WHERE clause in a SQL statement.
+     * @var string|array query condition. This refers to the WHERE clause in a SQL statement.
      * For example, `['age' => 31, 'team' => 1]`.
      * @see where() for valid syntax on specifying this value.
      */