SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Function lessOrEquals (children 1)
     ExpressionList (children 2)
      Function blockSize (children 1)
       ExpressionList
      Literal UInt64_8192
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Subquery (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 1)
         SelectQuery (children 2)
          ExpressionList (children 1)
           Identifier n
          TablesInSelectQuery (children 2)
           TablesInSelectQueryElement (children 1)
            TableExpression (children 1)
             Subquery (children 1)
              SelectWithUnionQuery (children 1)
               ExpressionList (children 1)
                SelectQuery (children 2)
                 ExpressionList (children 1)
                  Function range (alias x) (children 1)
                   ExpressionList (children 2)
                    Literal UInt64_0
                    Function modulo (children 1)
                     ExpressionList (children 2)
                      Function rand (children 1)
                       ExpressionList
                      Literal UInt64_10
                 TablesInSelectQuery (children 1)
                  TablesInSelectQueryElement (children 1)
                   TableExpression (children 1)
                    Function numbers (children 1)
                     ExpressionList (children 1)
                      Literal UInt64_1000000
           TablesInSelectQueryElement (children 1)
            ArrayJoin (children 1)
             ExpressionList (children 1)
              Identifier x (alias n)
