SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 5)
   ExpressionList (children 2)
    Function lessOrEquals (children 1)
     ExpressionList (children 2)
      Function max (children 1)
       ExpressionList (children 1)
        Identifier bs
      Literal UInt64_5
    Identifier b
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Subquery (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 1)
         SelectQuery (children 2)
          ExpressionList (children 2)
           Function blockSize (alias bs) (children 1)
            ExpressionList
           Asterisk
          TablesInSelectQuery (children 2)
           TablesInSelectQueryElement (children 1)
            TableExpression (children 1)
             TableIdentifier t1
           TablesInSelectQueryElement (children 2)
            TableExpression (children 1)
             TableIdentifier t2
            TableJoin (children 1)
             Function equals (children 1)
              ExpressionList (children 2)
               Identifier t1.a
               Identifier t2.a
   ExpressionList (children 1)
    Identifier b
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier b
   Set
