SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 2)
    Function sumIf (children 1)
     ExpressionList (children 2)
      Identifier number
      Identifier x
    Function sum (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 3)
          ExpressionList (children 2)
           Identifier number
           Function in (alias x) (children 1)
            ExpressionList (children 2)
             Identifier number
             Function tuple (children 1)
              ExpressionList (children 3)
               Function plus (children 1)
                ExpressionList (children 2)
                 Literal UInt64_0
                 Literal UInt64_1
               Function plus (children 1)
                ExpressionList (children 2)
                 Literal UInt64_2
                 Literal UInt64_3
               Function toUInt64 (children 1)
                ExpressionList (children 1)
                 Function concat (children 1)
                  ExpressionList (children 2)
                   Literal \'8\'
                   Literal \'\'
          TablesInSelectQuery (children 1)
           TablesInSelectQueryElement (children 1)
            TableExpression (children 1)
             TableIdentifier system.numbers
          Literal UInt64_10