SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 5)
   ExpressionList (children 5)
    Identifier table
    Function sum (children 1)
     ExpressionList (children 1)
      Identifier rows
    Function sum (alias sum_bytes) (children 1)
     ExpressionList (children 1)
      Identifier bytes_on_disk
    Function sum (alias sum_marks_bytes) (children 1)
     ExpressionList (children 1)
      Identifier marks_bytes
    Function minus (alias exclude_marks) (children 1)
     ExpressionList (children 2)
      Identifier sum_bytes
      Identifier sum_marks_bytes
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier system.parts_columns
   Function and (children 1)
    ExpressionList (children 3)
     Identifier active
     Function equals (children 1)
      ExpressionList (children 2)
       Identifier database
       Function currentDatabase (children 1)
        ExpressionList
     Function like (children 1)
      ExpressionList (children 2)
       Identifier table
       Literal \'test_02381%\'
   ExpressionList (children 1)
    Identifier table
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier table
