SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Function floor (alias ratio) (children 1)
     ExpressionList (children 1)
      Function divide (children 1)
       ExpressionList (children 2)
        Identifier big_size
        Identifier small_size
   TablesInSelectQuery (children 2)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Subquery (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 1)
         SelectQuery (children 3)
          ExpressionList (children 2)
           Literal UInt64_1 (alias key)
           Function sum (alias small_size) (children 1)
            ExpressionList (children 1)
             Identifier bytes_on_disk
          TablesInSelectQuery (children 1)
           TablesInSelectQueryElement (children 1)
            TableExpression (children 1)
             TableIdentifier system.parts
          Function and (children 1)
           ExpressionList (children 3)
            Function equals (children 1)
             ExpressionList (children 2)
              Identifier database
              Function currentDatabase (children 1)
               ExpressionList
            Function equals (children 1)
             ExpressionList (children 2)
              Identifier table
              Literal \'delta_codec_synthetic\'
            Identifier active
    TablesInSelectQueryElement (children 2)
     TableExpression (children 1)
      Subquery (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 1)
         SelectQuery (children 3)
          ExpressionList (children 2)
           Literal UInt64_1 (alias key)
           Function sum (alias big_size) (children 1)
            ExpressionList (children 1)
             Identifier bytes_on_disk
          TablesInSelectQuery (children 1)
           TablesInSelectQueryElement (children 1)
            TableExpression (children 1)
             TableIdentifier system.parts
          Function and (children 1)
           ExpressionList (children 3)
            Function equals (children 1)
             ExpressionList (children 2)
              Identifier database
              Function currentDatabase (children 1)
               ExpressionList
            Function equals (children 1)
             ExpressionList (children 2)
              Identifier table
              Literal \'default_codec_synthetic\'
            Identifier active
     TableJoin (children 1)
      ExpressionList (children 1)
       Identifier key
