How create HTML-list with hierarchical query?

Question

Hello all!
I have table HIE (name,id,par) with hierarchical structure (par=id)
As sample:
select name
FROM hie
CONNECT BY PRIOR id=par
START WITH par=0
Root
Branch 1
Lief 11
Lief 12
Bracnh 2
I need to create html-list from this table.
How can I select from that table the structured output with TAGs "UL" "LI":
<ul><li>root
<ul>
<li>branch 1
<ul>
<li>lief11</li>
<li>lief12</li>
</ul>
</li></ul>
<ul>
<li>branch 2</li></ul>
</li></ul>
Sql-Guru, please, help!
Message was edited by:
natalia.demidchick
Message was edited by:
natalia.demidchick
Message was edited by:
natalia.demidchick
Message was edited by:
natalia.demidchick
Message was edited by:
natalia.demidchick

Answer 1

Yes there was a mistake
Try this. It should be good
Processing ...
CREATE TABLE TAB_A AS (
     SELECT 'ROOT' AS NAME,1 AS ID,NULL AS PARENT FROM DUAL
     UNION ALL
     SELECT 'BRANCH1' AS NAME,2 AS ID,1 AS PARENT FROM DUAL
     UNION ALL
     SELECT 'BRANCH2' AS NAME,3 AS ID,2 AS PARENT FROM DUAL
     UNION ALL
     SELECT 'LIEF1' AS NAME,4 AS ID,2 AS PARENT FROM DUAL
     UNION ALL
     SELECT 'LIEF2' AS NAME,5 AS ID,2 AS PARENT FROM DUAL
     UNION ALL
     SELECT 'BRANCH3' AS NAME,6 AS ID,1 AS PARENT FROM DUAL
     UNION ALL
     SELECT 'LIEF3' AS NAME,7 AS ID,2 AS PARENT FROM DUAL
     UNION ALL
     SELECT 'BRANCH5' AS NAME,8 AS ID,1 AS PARENT FROM DUAL
     UNION ALL
     SELECT 'LIEF4' AS NAME,9 AS ID,8 AS PARENT FROM DUAL
     UNION ALL
     SELECT 'LIEF5' AS NAME,10 AS ID,3 AS PARENT FROM DUAL
     UNION ALL
     SELECT 'LIEF6' AS NAME,11 AS ID,3 AS PARENT FROM DUAL
Processing ...
SELECT *
FROM TAB_A
Query finished, retrieving results...
   NAME                      ID                                   PARENT                
ROOT                                            1                                       
BRANCH1                                         2                                      1
BRANCH2                                         3                                      2
LIEF1                                           4                                      2
LIEF2                                           5                                      2
BRANCH3                                         6                                      1
LIEF3                                           7                                      2
BRANCH5                                         8                                      1
LIEF4                                           9                                      8
LIEF5                                          10                                      3
LIEF6                                          11                                      3
11 row(s) retrieved
Processing ...
CREATE GLOBAL TEMPORARY TABLE TEMP_TAB AS (
     SELECT LEVEL AS LV,ROWNUM AS RN,A.*
     FROM TAB_A A
     WHERE (1=0)
     START WITH PARENT IS NULL
     CONNECT BY PRIOR ID = PARENT
Processing ...
INSERT INTO TEMP_TAB
     SELECT LEVEL AS LV,ROWNUM AS RN,A.*
     FROM TAB_A A
     START WITH PARENT IS NULL
     CONNECT BY PRIOR ID = PARENT
11 row(s) inserted
Processing ...
SELECT *
FROM TEMP_TAB
Query finished, retrieving results...
                  LV                                     RN                      NAME                      ID                                   PARENT                
                                     1                                      1 ROOT                                            1                                       
                                     2                                      2 BRANCH1                                         2                                      1
                                     3                                      3 BRANCH2                                         3                                      2
                                     4                                      4 LIEF5                                          10                                      3
                                     4                                      5 LIEF6                                          11                                      3
                                     3                                      6 LIEF1                                           4                                      2
                                     3                                      7 LIEF2                                           5                                      2
                                     3                                      8 LIEF3                                           7                                      2
                                     2                                      9 BRANCH3                                         6                                      1
                                     2                                     10 BRANCH5                                         8                                      1
                                     3                                     11 LIEF4                                           9                                      8
11 row(s) retrieved
Processing ...
SELECT --LV,RN,1+(NVL(LAG(LV) OVER ( ORDER BY RN ASC),0)-LV+1) step,
     --lead(LV) OVER ( ORDER BY RN ASC NULLS LAST) next_lev,
     decode (lv-1,nvl(LAG(LV) OVER ( ORDER BY RN ASC),0),'<UL>','')||
     '<LI>'||NAME||'</LI>'||
     replace(
     RPAD(chr(10),1+(lv-NVL(lead(LV) OVER ( ORDER BY RN ASC),0))*5,'</UL>'),
     chr(10),
     ) AS HTML
FROM TEMP_TAB A
ORDER BY RN ASC
Query finished, retrieving results...
                                      HTML                                      
<UL><LI>ROOT</LI>                                                               
<UL><LI>BRANCH1</LI>                                                            
<UL><LI>BRANCH2</LI>                                                            
<UL><LI>LIEF5</LI>                                                              
<LI>LIEF6</LI></UL>                                                             
<LI>LIEF1</LI>                                                                  
<LI>LIEF2</LI>                                                                  
<LI>LIEF3</LI></UL>                                                             
<LI>BRANCH3</LI>                                                                
<LI>BRANCH5</LI>                                                                
<UL><LI>LIEF4</LI></UL></UL></UL>                                               
11 row(s) retrieved
Processing ...
DROP TABLE TAB_A PURGE
Processing ...
DROP TABLE TEMP_TAB
SELECT LV,RN,1+(NVL(LAG(LV) OVER ( ORDER BY RN ASC),0)-LV+1) step,
     lead(LV) OVER ( ORDER BY RN ASC NULLS LAST) next_lev,
     decode (lv-1,nvl(LAG(LV) OVER ( ORDER BY RN ASC),0),'<UL>','')||
     '<LI>'||NAME||'</LI>'||
     replace(
     RPAD(chr(10),1+(lv-NVL(lead(LV) OVER ( ORDER BY RN ASC),0))*5,'</UL>'),
     chr(10),
     ) AS HTML
FROM TEMP_TAB A
ORDER BY RN ASC
/Bye Alessandro