Tree Structured Queries
Hi,
i'm making a program that can use any sql compliant database.
That is, it can run with Oracle, SQL Server, ...
In my database, I need to keep data that i will show to the user
in the form of a tree.
There's no problem whith oracle. I use SELECT ... CONNECT BY ..
PRIOR ... START WITH ...
But there is no such thing with SQL Server.
Does someone know how i can populate a tree without using
CONNECT BY ?
Thanks in advance, Jonathan.
I think that the source of your problem is in assuming that there is such a thing as a sql compliant database, and I fear that you may be on a "fool's errand" in trying to design an application to use any type of generic sql. Read http://www.oracle.com/oramag/webcolumns/2001/4826_Chap01.pdf to find out why, then consider buying the book.
I think that your question might be better put to a SQL Server audience, but the only generic way of doing this that I can think of would be to do multiple sef-joins on the table. not very efficient
Similar Messages
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Query for spesific children in a tree structure
Hi,
My data is organized in a tree structure.
I need a sql statement that returns a parent that
have a set of children corresponding to some demands.
I provide a very simplified description of my data, but it covers my problem.
Can anyone please help me write a select statement that gives me all featureids
that have a GID attribute with children GNR=123 AND BNR=456?
Regards
gv
create table attributetype( id number, name varchar2(8), parentid number );
insert into attributetype( id, name ) values ( 1, 'GIDLIST' );
insert into attributetype( id, name, parentid ) values ( 2, 'GID', 1 );
insert into attributetype( id, name, parentid ) values( 3, 'GNR', 2 );
insert into attributetype( id, name, parentid ) values ( 4, 'BNR', 2 );
create table attribute( featureid number, id number, parentid number, atttypeid number, intvalue number );
--attributes for feature1
insert into attribute( featureid, id, parentid, atttypeid ) values( 1, 1, 0, 1 );
insert into attribute( featureid, id, parentid, atttypeid ) values( 1, 2, 1, 2 );
insert into attribute( featureid, id, parentid, atttypeid, intvalue ) values( 1, 3, 2, 3, 123 );
insert into attribute( featureid, id, parentid, atttypeid, intvalue ) values( 1, 4, 2, 4, 456 );
insert into attribute( featureid, id, parentid, atttypeid ) values( 1, 5, 1, 2 );
insert into attribute( featureid, id, parentid, atttypeid, intvalue ) values( 1, 6, 5, 3, 12 );
insert into attribute( featureid, id, parentid, atttypeid, intvalue ) values( 1, 7, 5, 4, 456 );
--attributes for feature 2
insert into attribute( featureid, id, parentid, atttypeid ) values( 2, 8, 0, 1 );
insert into attribute( featureid, id, parentid, atttypeid ) values( 2, 9, 8, 2 );
insert into attribute( featureid, id, parentid, atttypeid, intvalue ) values( 2, 10, 9, 3, 678 );
insert into attribute( featureid, id, parentid, atttypeid, intvalue ) values( 2, 11, 9, 4, 456 );
insert into attribute( featureid, id, parentid, atttypeid ) values( 2, 12, 8, 2 );
insert into attribute( featureid, id, parentid, atttypeid, intvalue ) values( 2, 13, 12, 3, 876 );
insert into attribute( featureid, id, parentid, atttypeid, intvalue ) values( 2, 14, 12, 4, 456 );
commit;
column name format a15
select a.featureid featureid, lpad(' ', (level - 1) * 2) || b.name name, a.id attid, a.parentid parentid, a.intvalue
from attribute a, attributetype b
where a.atttypeid=b.id
connect by prior a.id=a.parentid
start with a.parentid=0;
FEATUREID NAME ATTID PARENTID INTVALUE
1 GIDLIST 1 0
1 GID 2 1
1 GNR 3 2 123
1 BNR 4 2 456
1 GID 5 1
1 GNR 6 5 12
1 BNR 7 5 456
2 GIDLIST 8 0
2 GID 12 8
2 GNR 13 12 876
2 BNR 14 12 456
2 GID 9 8
2 GNR 10 9 678
2 BNR 11 9 456Hi,
Thanks for providing the CREATE TABLE and INSERT statements; that helps a lot.
You want featureids that meet three criteria:
(1) there is a GID attribute
(2) the GID attribute has a GNR child with intvalue=123
(3) the GID attribute has a BNR child with intvalue=456
Since you're looking for immediate children, not distant descendants, it's easiest to do this with a non-hierarrchical query that finds one of these criteria, and does EXISTS sub-queries to test for the other two.
For example:
WITH aat AS
( -- Begin aat: join of attribute and attributetype
SELECT a.featureid
, a.id
, a.parentid
, a.intvalue
, t.name
FROM attribute a
JOIN attributetype t ON a.atttypeid = t.id
) -- End aat: join of attribute and attributetype
SELECT DISTINCT featureid
FROM aat m -- m for main
WHERE name = 'GID'
AND EXISTS ( -- Begin EXISTS sub-query for GNR=123
SELECT NULL
FROM aat
WHERE parentid = m.id
AND name = 'GNR'
AND intvalue = 123
) -- End EXISTS sub-query for GNR=123
AND EXISTS ( -- Begin EXISTS sub-query for BNR=456
SELECT NULL
FROM aat
WHERE parentid = m.id
AND name = 'BNR'
AND intvalue = 456
) -- End EXISTS sub-query for BNR=456
;Alternatively, you could do a three-way self join, and skip the EXISTS sub-queries.
If you were looking for GNR and BNR descendants, any number of levels below the same GID node, it's easy to modify the query above. Just re-write the EXISTS sub-queries to CONNECT BY queries that "START WITH parentid = m.id".
It looks like this application will have a lot of use for a view like aat, above. If you don't already have a permanent view like that, you should create one. -
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how to show data or create a alv report in tree structure.
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How to get Text for nodes in Tree Structure
Hi Friends,
How to get Text for nodes in Tree Structure
REPORT YFIIN_REP_TREE_STRUCTURE no standard page heading.
I N I T I A L I Z A T I O N
INITIALIZATION.
AUTHORITY-CHECK OBJECT 'ZPRCHK_NEW' :
ID 'YFIINICD' FIELD SY-TCODE.
IF SY-SUBRC NE 0.
MESSAGE I000(yFI02) with SY-TCODE .
LEAVE PROGRAM.
ENDIF.
class screen_init definition create private.
Public section
public section.
class-methods init_screen.
methods constructor.
Private section
private section.
data: container1 type ref to cl_gui_custom_container,
container2 type ref to cl_gui_custom_container,
tree type ref to cl_gui_simple_tree.
methods: fill_tree.
endclass.
Class for Handling Events
class screen_handler definition.
Public section
public section.
methods: constructor importing container
type ref to cl_gui_custom_container,
handle_node_double_click
for event node_double_click
of cl_gui_simple_tree
importing node_key .
Private section
private section.
endclass.
*& Classes implementation
class screen_init implementation.
*& Method INIT_SCREEN
method init_screen.
data screen type ref to screen_init.
create object screen.
endmethod.
*& Method CONSTRUCTOR
method constructor.
data: events type cntl_simple_events,
event like line of events,
event_handler type ref to screen_handler.
create object: container1 exporting container_name = 'CUSTOM_1',
tree exporting parent = container1
node_selection_mode =
cl_gui_simple_tree=>node_sel_mode_multiple.
create object: container2 exporting container_name = 'CUSTOM_2',
event_handler exporting container = container2.
event-eventid = cl_gui_simple_tree=>eventid_node_double_click.
event-appl_event = ' '. "system event, does not trigger PAI
append event to events.
call method tree->set_registered_events
exporting events = events.
set handler event_handler->handle_node_double_click for tree.
call method: me->fill_tree.
endmethod.
*& Method FILL_TREE
method fill_tree.
data: node_table type table of abdemonode,
node type abdemonode.
types: begin of tree_node,
folder(50) type c,
tcode(60) type c,
tcode1(60) type c,
tcode2(60) type c,
text(60) type c,
text1(60) type c,
text2(60) type c,
end of tree_node.
data: wa_tree_node type tree_node,
t_tree_node type table of tree_node.
wa_tree_node-folder = text-001.
wa_tree_node-tcode = text-002.
wa_tree_node-text = 'Creditors ageing'.
wa_tree_node-tcode1 = text-003.
wa_tree_node-text1 = 'GR/IR aging'.
wa_tree_node-tcode2 = text-004.
wa_tree_node-text2 = 'Bank Balance'.
append wa_tree_node to t_tree_node.
clear wa_tree_node .
wa_tree_node-folder = text-005.
wa_tree_node-tcode = text-006.
wa_tree_node-text = 'Creditors ageing'.
wa_tree_node-tcode1 = text-007.
wa_tree_node-text1 = 'Creditors ageing'.
wa_tree_node-tcode2 = text-008.
wa_tree_node-text2 = 'Creditors ageing'.
append wa_tree_node to t_tree_node.
clear wa_tree_node .
wa_tree_node-folder = text-009.
wa_tree_node-tcode = text-010.
wa_tree_node-text = 'Creditors ageing'.
wa_tree_node-tcode1 = text-011.
wa_tree_node-text1 = 'Creditors ageing'.
wa_tree_node-tcode2 = text-012.
wa_tree_node-text2 = 'Creditors ageing'.
append wa_tree_node to t_tree_node.
clear wa_tree_node .
node-hidden = ' '. " All nodes are visible,
node-disabled = ' '. " selectable,
node-isfolder = 'X'. " a folder,
node-expander = ' '. " have no '+' sign forexpansion.
loop at t_tree_node into wa_tree_node.
at new folder.
node-isfolder = 'X'. " a folder,
node-node_key = wa_tree_node-folder.
clear node-relatkey.
clear node-relatship.
node-text = wa_tree_node-folder.
node-n_image = ' '.
node-exp_image = ' '.
append node to node_table.
endat.
at new tcode .
node-isfolder = ' '. " a folder,
node-n_image = '@CS@'. "AV is the internal code
node-exp_image = '@CS@'. "for an airplane icon
node-node_key = wa_tree_node-tcode.
node-text = wa_tree_node-text .
node-relatkey = wa_tree_node-folder.
node-relatship = cl_gui_simple_tree=>relat_last_child.
endat.
append node to node_table.
at new tcode1 .
node-isfolder = ' '. " a folder,
node-n_image = '@CS@'. "AV is the internal code
node-exp_image = '@CS@'. "for an airplane icon
node-node_key = wa_tree_node-tcode1.
node-relatkey = wa_tree_node-folder.
node-relatship = cl_gui_simple_tree=>relat_last_child.
node-text = wa_tree_node-text1.
endat.
append node to node_table.
at new tcode2 .
node-isfolder = ' '. " a folder,
node-n_image = '@CS@'. "AV is the internal code
node-exp_image = '@CS@'. "for an airplane icon
node-node_key = wa_tree_node-tcode2.
node-relatkey = wa_tree_node-folder.
node-relatship = cl_gui_simple_tree=>relat_last_child.
node-text = wa_tree_node-text2.
endat.
append node to node_table.
endloop.
call method tree->add_nodes
exporting table_structure_name = 'ABDEMONODE'
node_table = node_table.
endmethod.
endclass.
*& Class implementation
class screen_handler implementation.
*& Method CONSTRUCTOR
method constructor.
create object: HTML_VIEWER exporting PARENT = CONTAINER,
LIST_VIEWER exporting I_PARENT = CONTAINER.
endmethod.
*& Method HANDLE_NODE_DOUBLE_CLICK
method handle_node_double_click.
case node_key(12).
when 'Creditors'.
submit YFIIN_REP_CREADITORS_AGING via selection-screen and return.
when 'Vendor'.
submit YFIIN_REP_VENDOR_OUTSTANDING via selection-screen and return.
when 'Customer'.
submit YFIIN_REP_CUSTOMER_OUTSTANDING via selection-screen and
return.
when 'GR/IR'.
submit YFIIN_REP_GRIR_AGING via selection-screen and return.
when 'Acc_Doc_List'.
submit YFIIN_REP_ACCOUNTINGDOCLIST via selection-screen and return.
when 'Bank Bal'.
submit YFIIN_REP_BANKBALANCE via selection-screen and return.
when 'Ven_Cus_Dtl'.
submit YFIIN_REP_VENDORCUST_DETAIL via selection-screen and return.
when 'G/L_Open_Bal'.
submit YFIIN_REP_OPENINGBALANCE via selection-screen and return.
when 'Usr_Authn'.
submit YFIIN_REP_USERAUTHRIZATION via selection-screen and return.
endcase.
endmethod.
endclass.
Program execution ************************************************
load-of-program.
call screen 9001.
at selection-screen.
Dialog Modules PBO
*& Module STATUS_9001 OUTPUT
text
module status_9001 output.
set pf-status 'SCREEN_9001'.
set titlebar 'TIT_9001'.
call method screen_init=>init_screen.
endmodule. " STATUS_9001 OUTPUT
Dialog Modules PAI
*& Module USER_COMMAND_9001 INPUT
text
module user_command_9001 input.
endmodule. " USER_COMMAND_9001 INPUT
*& Module exit_9001 INPUT
text
module exit_9001 input.
case sy-ucomm.
when 'EXIT'.
set screen 0.
endcase.
endmodule.
exit_9001 INPUTyou can read the table node_table with nody key value which imports when docubble click the the tree node (Double clifk event).
Regards,
Gopi .
Reward points if helpfull. -
How to use ONE query to find out tree structure?
ID------------upperID----------Name------------------------isFolder
1------------ 0---------- Folder
1------------------------------------1
2------------ 1------------ Folder 1- Sub
Folder--------------------1
3------------ 2------------
Folder1-Item1-A--------------------------0
4------------ 1------------ Folder 1- Sub
Item-----------------------0
Hi all, if I have a table like above to demonstrate the
folders and item relationship. This structure allows the user to
create unlimited folders and items.
Now I would like to use one query to find out the tree
structure of this table, how could I do the query.
Any help on this will be highly appreciated!
Thanks,
ezAlso, see this thread:
http://www.adobe.com/cfusion/webforums/forum/messageview.cfm?forumid=1&catid=7&threadid=12 55788&enterthread=y -
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Hi,
I have a table that is designed to do a tree structure like:
Table Name: test
Fields:
ID
ParentID
Description
I created a browser (IR) (page 1) that calls a form (page 2)
The form has the editing fields and at the bottom layer I have a reports region where I display the children records using a query like:
select * from test where ParentID = :P2_ID
I need at the region level to add a button to call a form to edit the child record (which is the same table) and when done, to return to the form again but to the parent record.
How can I do that successfully? Is there any example:?
Thank youMaybe this can help:
http://apex.oracle.com/pls/otn/f?p=31517:157
using instead of trigger on a view.
Denes Kubicek
http://deneskubicek.blogspot.com/
http://www.opal-consulting.de/training
http://apex.oracle.com/pls/otn/f?p=31517:1
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[Java Webdynpro|http://www.sappress.com/product.cfm?account=&product=H983]
[ABAP Webdynpro|http://www.sappress.com/product.cfm?account=&product=H1916]
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How to get Tree structure in JSP page?
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I would like get data from the database and display the data in tree structure with the check boxes at each nodes on a jsp page with out using any third party tools. how can i do that? Do i require any new tags to fulfill this requirement?
can any one help me out by sending any example code?
thanks in advance.
Regards,
ReddyOnce you have the data in a list or something, can't you just use <c:forEach> and then output standard nested <ul> and <li> tags to give the tree structure.
<html>
<style>
li
list-style-type:none;
</style>
<body>
<form>
<ul>
<li>
<input type="checkbox">Check 1</input>
<ul>
<li>
<input type="checkbox">Check 1A</input>
</li>
<li>
<input type="checkbox">Check 1B</input>
</li>
</ul>
</li>
<li>
<input type="checkbox">Check 2</input>
<ul>
<li>
<input type="checkbox">Check 2A</input>
</li>
</ul>
</li>
<li>
<input type="checkbox">Check 3</input>
</li>
</ul>
</form>
</body>
</html> -
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You can use a TreeSet or TreeMap if you just want to use tree structures.
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ex.
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How to get the folder name of selected subitem in tree structure?
Hi All,
I created a tree structure like below.
->Folder1-- 1
2
3
->Folder2-----1
2
3
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RaviHi Kumar ,
the below code should help you.
Register the below action for the leaf node for which u need the subfolder's name above it.
Worked fine in my system ...hope it does in ur scenario too
method ONACTIONGET_PATH .
data : lr_element TYPE REF TO if_wd_context_element,
lr_node TYPE REF TO if_wd_context_node,
ls_path type string,
ls_path_node TYPE string,
lt_string type TABLE OF string,
l_lines type i,
l_lines_1 TYPE i.
lr_element = wdevent->get_context_element( 'CONTEXT_ELEMENT' ).
**-> getting the path of the node/leaf
*which u had clicked and from that getting the node above it
ls_path = lr_element->get_path( ).
SPLIT ls_path at '.' into table lt_string.
-> remove the first 2 entries as they will contain the view name
DELETE lt_string FROM 1 to 2.
l_lines = LINES( lt_String ).
l_lines_1 = l_lines - 1.
-> remove the last 2 entries as they will contain the element in the path
DELETE lt_string from l_lines_1 to l_lines.
LOOP AT lt_string into ls_path.
CONCATENATE LINES OF LT_STRING into ls_path_node SEPARATED BY '.'.
ENDLOOP.
**-> getting access to the node above the leaf element
LR_NODE = WD_CONTEXT->PATH_GET_NODE( path = ls_path_node ).
lr_element = lr_node->get_element( ).
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lr_element->get_attribute( EXPORTING name = 'PATH' IMPORTING value = ls_path ).
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How to create a PortalSite map in a tree structure
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We are trying to reuse SAP Portal EP 7.3 standard functionalities related to create a Portal Site Map.
I've seen the procedure to create a Workset map iview (http://help.sap.com/saphelp_nw73/helpdata/en/49/32a7a9e8c45aaae10000000a42189d/frameset.htm), but we are interested in generate this map contained in a tree structure, because currently the SAP EP 7.1 brings the menu and option format.
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I'm having trouble '''Finding''' the forum where I can look for the information I need. I keep ending up in '''endless menus of non-helpful information. '''
I got a popup message, I needed to upgrade to 3.6.17. After allowing it and rebooting, I couldn't start FF anymore, just got a crash report. I tried going to the restore point I had set with no luck and I tried creating a new profile. I lost all my bookmarks (only the Cache remained). And I sat in live chat for an hour waiting for help. German live chat had one helper and English live chat was closed.
So I gave up on help, uninstalled FF 3.6.17 and downloaded FF 3.6.15 and installed it. It loads but all bookmarks are gone. More importantly, now when I load the bookmarks, I can't '''retrieve''' them except by storing a new one. '''Only''' when I create a new bookmark can I see the folders I've created. I can't get to the organizer so I can't use the bookmarks to retrieve websites.
I'm disturbed that I can't get to the tree-structure forum where I can get the help I need. This "lead me around" labyrinth from one question to another, without being able to look through the forum for the information I need, is not helpful.
Thank you.
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How to populate Tree structure from BAPI while tree grows or shrinks
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Currently I am populating the tree structure from BAPI based on the HLevel (Hierarchy Level) parameter, but when ever insertion and deletion happens in the tree at any level in the UI and at the same time i am updating these tree node values with HLevel value(example : 1 is first level , 2 is second level, 3 is third level etc) updating successfully& correctly into the BAPI, no issues.
Once it is updated into the BAPI, next time when i refreshed the UI then i am not populating the tree structure correctly from BAPI with updated new nodes based on the HLevel. when tree struture grows or shrinks in the BAPI after updating into BAPI from UI then i am not populating the tree sturcture correctly based on the HLevel value from the BAPI.
Please let me know any sample code how to populate tree structure correctly when tree structure grows or shrinks based on the HLevel value ( Hierarchy Level , for example : 1 is level , 2 is 2nd level , 3 is third level nodes etc)
anybody helps in this regard with sample code on the populating tree tructure then it would be great help to me.
Thanks in advance
Regards
Kalki Reddy
Edited by: KalkiReddy on Nov 29, 2009 3:48 PMBapi output node:
Value | Text | HLevel
01 | A | 1
0101 | AA | 2
010101 | AAA | 3
01010B | AAB | 3
0102 | AB | 2
02 | B | 1
0201 | BA | 2
This code is used to build the tree in wdDoInit method
IE_T_CatalogueNode catalogueNode = wdContext.nodeE_T_Catalogue();
int size = catalogueNode.size();
ICatalogoElement level1elem = null;
for (int i = 0; i < size; i ++)
IE_T_CatalogueElement catalogueElem = catalogueNode.getE_T_CatalogueElementAt(i);
if (catalogueElem.getLevel().equals("1"))
// 1 Livello
level1elem = wdContext.createCatalogoElement();
level1elem.setKATALOGART_CODE(catalogueElem.getKatalogart());
level1elem.setCODEGRUPPE_CODE(catalogueElem.getCodegruppe());
level1elem.setCODE(catalogueElem.getCode());
level1elem.setCODE_DESCR(catalogueElem.getKatalogart_Descr());
level1elem.setDESCR(catalogueElem.getKatalogart_Descr());
wdContext.nodeCatalogo().addElement(level1elem);
for (int j = i + 1; j < size; j ++)
IE_T_CatalogueElement catalogueElem2level =
catalogueNode.getE_T_CatalogueElementAt( j );
String level2 = catalogueElem2level.getLevel();
if (level2.equals("2"))
ICatalogoElement level2elem = level1elem.nodeChild().createCatalogoElement();
level2elem.setKATALOGART_CODE(catalogueElem2level.getKatalogart());
level2elem.setCODEGRUPPE_CODE(catalogueElem2level.getCodegruppe());
level2elem.setCODE(catalogueElem2level.getCode());
level2elem.setCODE_DESCR(catalogueElem2level.getCodegruppe_Descr());
level2elem.setDESCR(catalogueElem2level.getCodegruppe_Descr());
level1elem.nodeChild().addElement(level2elem);
for (int k = j + 1; k < size; k ++)
IE_T_CatalogueElement catalogueElem3level =
catalogueNode.getE_T_CatalogueElementAt( k );
String level3 = catalogueElem3level.getLevel();
if (level3.equals("3"))
ICatalogoElement level3elem = level2elem.nodeChild().createCatalogoElement();
level3elem.setKATALOGART_CODE(catalogueElem3level.getKatalogart());
level3elem.setCODEGRUPPE_CODE(catalogueElem3level.getCodegruppe());
level3elem.setCODE(catalogueElem3level.getCode());
level3elem.setCODE_DESCR(catalogueElem3level.getCode_Descr());
level3elem.setDESCR(catalogueElem3level.getCode_Descr());
level2elem.nodeChild().addElement(level3elem);
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