SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Function equals (children 1)
     ExpressionList (children 2)
      Function count (children 1)
       ExpressionList
      Function countIf (children 1)
       ExpressionList (children 1)
        Function in (children 1)
         ExpressionList (children 2)
          Identifier tier
          Literal Array_[\'Production\', \'Beta\', \'Experimental\', \'Obsolete\']
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier system.merge_tree_settings
