How to create dynamic row selection

Question

currently doing an application
which require something like the search engine page [ 1|2|3|4|5]
how do I get and display the row num in sql
to get from say starting from 1 to 11 and the next one 12 to 22?
quick eg:
select * from country where rownum between
x and xx
where x is start of row and
xx is end of row
anyone has any idea??
null

Answer 1

Why use PL/SQL, when a single SQL statement is all that is needed to generate the XML?
h3. Maximize SQL. Minimize PL/SQL.
SQL> select
  2          xmlRoot(
  3                  xmlElement( "RowSet",
  4                          xmlAgg(
  5                                  xmlElement( "case",
  6                                          xmlAttributes( rownum as "repeating_index" ),
  7                                          xmlForest(
  8                                                  object_name,
  9                                                  object_type
10                                          )
11                                  )
12                          )
13                  ),
14                  VERSION '1.1',
15                  STANDALONE YES
16          )                               as XML
17  from       user_objects
18  where      rownum < 4
19  /
XML
<?xml version="1.1" standalone="yes"?>
<RowSet>
  <case repeating_index="1">
    <OBJECT_NAME>INSERTEMP</OBJECT_NAME>
    <OBJECT_TYPE>PROCEDURE</OBJECT_TYPE>
  </case>
  <case repeating_index="2">
    <OBJECT_NAME>EMMP</OBJECT_NAME>
    <OBJECT_TYPE>TABLE</OBJECT_TYPE>
  </case>
  <case repeating_index="3">
    <OBJECT_NAME>FOO</OBJECT_NAME>
    <OBJECT_TYPE>TABLE PARTITION</OBJECT_TYPE>
  </case>
</RowSet>
SQL>