SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Asterisk
   TablesInSelectQuery (children 2)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Subquery (alias t1) (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 1)
         SelectQuery (children 1)
          ExpressionList (children 2)
           Literal UInt64_0 (alias k)
           Function toDecimal64 (alias v) (children 1)
            ExpressionList (children 2)
             Literal UInt64_1
             Literal UInt64_0
    TablesInSelectQueryElement (children 2)
     TableExpression (children 1)
      Subquery (alias t2) (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 1)
         SelectQuery (children 1)
          ExpressionList (children 2)
           Literal UInt64_0 (alias k)
           Function toDecimal64 (alias v) (children 1)
            ExpressionList (children 2)
             Literal UInt64_0
             Literal UInt64_0
     TableJoin (children 1)
      ExpressionList (children 2)
       Identifier k
       Identifier v
