SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Function runningDifference (children 1)
     ExpressionList (children 1)
      Identifier x
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Subquery (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 1)
         SelectQuery (children 1)
          ExpressionList (children 1)
           Function arrayJoin (alias x) (children 1)
            ExpressionList (children 1)
             Function array (children 1)
              ExpressionList (children 7)
               Literal NULL
               Literal NULL
               Function toDate32 (children 1)
                ExpressionList (children 1)
                 Literal \'1900-1-1\'
               Function toDate32 (children 1)
                ExpressionList (children 1)
                 Literal \'1930-5-25\'
               Function toDate (children 1)
                ExpressionList (children 1)
                 Literal \'1990-9-4\'
               Literal NULL
               Function toDate32 (children 1)
                ExpressionList (children 1)
                 Literal \'2279-5-4\'