RE: SQL Brain Teaser Challenge

Steve,

I'm busted! You caught me cheating. Still you must admit it was an interesting use of TRANSLATE given the data in the DESCRIPTION field.

Jerry Whittle
ACIFICS DBA
NCI Information Systems Inc.
jerome.whittle_at_scott.af.mil
618-622-4145

> -----Original Message-----
> From: Orr, Steve [SMTP:sorr_at_rightnow.com]
>
> Well it worked but it doesn't follow the rules. The description can change
> so it should not be sorted on. Consider this:
>
> update treenode set description='2nd item, 3rd folder' where id=8;
>
> select * from treenode
> order by translate(description || 0,
> '0123456789abcdefghijklmnopqrstuvwxyz ', '0123456789');
>
> ID PARENTID NODEORDER DESCRIPTION
> ---------- ---------- ---------- --------------------
> 1 0 0 top folder
> 9 1 0 1st subfolder
> 8 7 1 2nd item, 3rd folder
> 2 1 1 2nd subfolder
> 4 2 1 folder 2 item 1
> 3 2 2 folder 2 item 2
> 6 2 3 folder 2 item 3
> 7 1 2 3rd subfolder
> 5 7 0 folder 3 item 1
>
> 9 rows selected.
> -----Original Message-----
> From: Whittle Jerome Contr NCI [mailto:Jerome.Whittle_at_scott.af.mil]
>
> select *
> from treenode
> order by translate(description || 0, '0123456789abcdefghijklmnopqrstuvwxyz
> ', '0123456789')
> Jerry Whittle
> ACIFICS DBA
> NCI Information Systems Inc.
> jerome.whittle_at_scott.af.mil
> 618-622-4145
> -----Original Message-----
> From: Orr, Steve [SMTP:sorr_at_rightnow.com]
> Challenge: present SQL results hierarchically and sort the nodes. Use sort
> column without changing data. Here's the DDL/DML to start:
> create table treenode (
> id number not null
> constraint pk_treenode primary key,
> parentid number not null,
> nodeorder number not null,
> description varchar2(20) null);
> insert into treenode values(1,0,0,'top folder');
> insert into treenode values(9,1,0,'1st subfolder');
> insert into treenode values(7,1,2,'3rd subfolder');
> insert into treenode values(2,1,1,'2nd subfolder');
> insert into treenode values(8,7,1,'folder 3 item 2');
> insert into treenode values(6,2,3,'folder 2 item 3');
> insert into treenode values(5,7,0,'folder 3 item 1');
> insert into treenode values(3,2,2,'folder 2 item 2');
> insert into treenode values(4,2,1,'folder 2 item 1');
> -----------------------------------------------------
> Here's the data presented hierachically without the desired sort:
> select * from treenode
> start with parentid=0 connect by prior id = parentid;
> ID PARENTID NODEORDER DESCRIPTION
> ---------- ---------- ---------- --------------------
> 1 0 0 top folder
> 9 1 0 1st subfolder
> 7 1 2 3rd subfolder
> 8 7 1 folder 3 item 2
> 5 7 0 folder 3 item 1
> 2 1 1 2nd subfolder
> 6 2 3 folder 2 item 3
> 3 2 2 folder 2 item 2
> 4 2 1 folder 2 item 1
> -----------------------------------------------------
> Desired SQL statement results:
> ID PARENTID NODEORDER DESCRIPTION
> ---------- ---------- ---------- --------------------
> 1 0 0 top folder
> 9 1 0 1st subfolder
> 2 1 1 2nd subfolder
> 4 2 1 folder 2 item 1
> 3 2 2 folder 2 item 2
> 6 2 3 folder 2 item 3
> 7 1 2 3rd subfolder
> 5 7 0 folder 3 item 1 >
> 8 7 1 folder 3 item 2
> -----------------------------------------------------
> Kudos to anyone who can figure out how to do this via SQL.
> Steve Orr
> Bozeman, Montana

-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.com
-- 
Author: Whittle Jerome Contr NCI
  INET: Jerome.Whittle_at_scott.af.mil

Fat City Network Services    -- 858-538-5051 http://www.fatcity.com
San Diego, California        -- Mailing list and web hosting services
---------------------------------------------------------------------
To REMOVE yourself from this mailing list, send an E-Mail message
to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in
the message BODY, include a line containing: UNSUB ORACLE-L
(or the name of mailing list you want to be removed from).  You may
also send the HELP command for other information (like subscribing).