Issue #3410886 by emircanerkul, AaronBauman: Add option to SelectQuery condition

src/SelectQuery.php

@@ -51,6 +51,13 @@ class SelectQuery implements SelectQueryInterface {
    */
   public $offset;
 
+  /**
+   * The operator used to combine conditions, defaults to 'AND'.
+   *
+   * @var string
+   */
+  public $conjunction;
+
   /**
    * SelectQuery constructor.
    *