| Subject | RE: Re: [firebird-support] How To Get Entire Linked Group Details |
|---|---|
| Author | Norbert Saint Georges |
| Post date | 2015-10-05T13:22:53Z |
Recursive Trees with Firebird ?
http://www.firebirdsql.org/file/community/ppts/fbcon11/FBTrees2011.pdf
Norbert Saint Georges
TetraSys Oy
Bergantie 69, FI-02540 Kylmälä
Tel. : +358 (0) 400 27 25 18
E- mail : nsg@...
De : firebird-support@yahoogroups.com [mailto:firebird-support@yahoogroups.com]
Envoyé : lundi 5 octobre 2015 16:06
À : firebird-support@yahoogroups.com
Objet : Re: Re: [firebird-support] How To Get Entire Linked Group Details
Hi Norbert,
Thank You So Much, I got exactly the same result what I was expecting.
Thank You So much.
Are you aware of any documents which are avaialble in english, so I could learn this recirsive SQL ?
With Best Regards.
Vishal
On Monday, 5 October 2015 3:55 PM, "'Norbert Saint Georges' nsg@... [firebird-support]" <firebird-support@yahoogroups.com> wrote:
if I understand the request, something like
select b.description from
(
select a.* from mygroup a
where a.linked_to_group is not null
and
(
exists(select 1 from mygroup b where b.linked_to_group = a.pk_group )
or a.linked_to_group != (select first 1 pk_group from mygroup where linked_to_group is null)
)
) b
where b.linked_to_group = (select first 1 pk_group from mygroup where description = 'Vishal Group')
Norbert Saint Georges
TetraSys Oy
Bergantie 69, FI-02540 Kylmälä
Tel. : +358 (0) 400 27 25 18
E- mail : nsg@...
De : firebird-support@yahoogroups.com [mailto:firebird-support@yahoogroups.com]
Envoyé : lundi 5 octobre 2015 11:15
À : firebird-support@yahoogroups.com
Objet : Re: Re: [firebird-support] How To Get Entire Linked Group Details
Hi Norbert,
The SQL you have shared without CTE, gives me other group details as well if they exists. If you create another base group like 'Vishal Group', then this SQL gives that group details as well. I tried but putting group name in condition but getting only one record, could you show me how to get only 'Vishal Group' records, so that would also a good learning for me.
Thanks In Advance.
With Best Regards.
Vishal
On Friday, 2 October 2015 6:57 PM, "'Norbert Saint Georges' nsg@... [firebird-support]" <firebird-support@yahoogroups.com> wrote:
Without CTE
select a.description from mygroup a
where a.linked_to_group is not null
and
(
exists(select 1 from mygroup b where b.linked_to_group = a.pk_group )
or
a.linked_to_group != (select first 1 pk_group from mygroup where linked_to_group is null)
)
Norbert Saint Georges
TetraSys Oy
Bergantie 69, FI-02540 Kylmälä
Tel. : +358 (0) 400 27 25 18
E- mail : nsg@...
De : firebird-support@yahoogroups.com [mailto:firebird-support@yahoogroups.com]
Envoyé : vendredi 2 octobre 2015 15:24
À : firebird-support@yahoogroups.com
Objet : Re: Re: [firebird-support] How To Get Entire Linked Group Details
Hi Karol Bieniaszewski,
You are passing "Vishal Group1" in condition, I need to pass "Vishal Group" (i.e. base leaf for perticular group), because in the sql you provided if I put 'Test1', it gives entire structure details, one way that is correct, but only i need is to pass required base group as in the condition and not any sub-leaf in condition, could you please modify it ?
Thanks Again In Advance.
With Best Regards.
Vishal
On Friday, 2 October 2015 5:23 PM, "Vishal Tiwari vishualsoft@... [firebird-support]" <firebird-support@yahoogroups.com> wrote:
Hi Karol Bieniaszewski,
Yessssssssss, YOU ARE THE MAN OF THE MOMENT.
Your SQL just ROCKS, JUST ROCKS..... AWESOME KAROL, JUST AWESOME.....
I am going to next level of my code where I need to find out that the deepest leaf, if it is not used in certain table then I would like to delete it.
For time being one more questions (Please expect more in upcoming time on this issue :) ), is it possible to get the records for one entire leaf and it dependent leafs and then another leaf and its dependent and so on via your SQL ?
Result order like:
Vishal Group
Vishal Group1
Vishal Group1.1
Vishal Group1.1.1
Vishal Group2
Vishal Group2.1
Vishal Group2.1.1
Vishal Group3
Vishal Group4
Vishal Group4.1
With Best Regards.
Vishal
On Friday, 2 October 2015 4:59 PM, "liviuslivius liviuslivius@... [firebird-support]" <firebird-support@yahoogroups.com> wrote:
Hi,
i do not know if you describe your problem precisely.
But i understand it like this:
looks like you need all leaf from same parent (with parent included) as is for "Vishal Group1" and all its childs
try this
WITH RECURSIVE
G1_PARENT AS
(
SELECT MGP.DESCRIPTION FROM MYGROUP MG INNER JOIN MYGROUP MGP ON MGP.PK_GROUP=MG.LINKED_TO_GROUP WHERE MG.DESCRIPTION='Vishal Group1'
),
R_TREE AS
(
SELECT TT.PK_GROUP AS A, CAST(CASE WHEN TT.DESCRIPTION=GP.DESCRIPTION THEN GP.DESCRIPTION ELSE '' END AS VARCHAR(255)) AS PARENT
FROM MYGROUP TT LEFT JOIN G1_PARENT GP ON 1=1
WHERE TT.LINKED_TO_GROUP IS NULL
UNION ALL
SELECT TT.PK_GROUP AS A, CASE WHEN TT.DESCRIPTION=GP.DESCRIPTION THEN GP.DESCRIPTION ELSE RT.PARENT END AS PARENT
FROM MYGROUP TT LEFT JOIN G1_PARENT GP ON 1=1
JOIN R_TREE RT ON RT.A = TT.LINKED_TO_GROUP
)
SELECT
*
FROM
R_TREE RT2
INNER JOIN G1_PARENT GP ON RT2.PARENT=GP.DESCRIPTION
INNER JOIN MYGROUP TT2 ON TT2.PK_GROUP=RT2.A
with this query i got the same result as you showed in table below
regards,
Karol Bieniaszewski
W dniu 2015-10-02 06:36:16 użytkownik Vishal Tiwari vishualsoft@... [firebird-support] <firebird-support@yahoogroups.com> napisał:
Hi All,
There is some change in my previous SQL. Please consider below SQLs.
CREATE TABLE MYGROUP
(
PK_GROUP GUID DEFAULT 'newid()' NOT NULL,
DESCRIPTION Varchar(255),
LINKED_TO_GROUP GUID,
PRIMARY KEY (PK_GROUP)
);
COMMIT;
INSERT INTO MYGROU P (PK_GROUP, DESCRIPTION, LINKED_TO_GROUP) VALUES ('{11111111-111-1111-1111-111111111111} ', 'My Items', NULL);
INSERT INTO MYGROUP (PK_GROUP, DESCRIPTION, LINKED_TO_GROUP) VALUES ('{CD1E33D1-1666-49B9-83BE-067687E4DDD6}', 'Vishal Group', '{11111111-111-1111-1111-111111111111}');
INSERT INTO MYGROUP (PK_GROUP, DESCRIPTION, LINKED_TO_GROUP) VALUES ('{4B42E7A5-B14C-451B-ACF5-83DD8A983A58}', 'Vishal Group1', '{CD1E33D1-1666-49B9-83BE-067687E4DDD6}');
IN SERT INTO MYGROUP (PK_GROUP, DESCRIPTION, LINKED_TO_GROUP) VALUES ('{A87E921D-0468-497D-92C5-19AB63751EE8}', 'Vishal Group1.1', '{4B42E7A5-B14C-451B-ACF5-83DD8A983A58}');
INSERT INTO MYGROUP (PK_GROUP, DESCRIPTION, LINKED_TO_GROUP) VALUES ('{0FDC729A-8FCC-4D23-8619-436A459835DD}', 'Vishal Group1.1.1', '{A87E921D-0468-497D-92C5-19AB63751EE8}');
INSERT INTO MYGROUP (PK_GROUP, DESCRIPTION, LINKED_TO_GROUP) VALUES ('{2E15A2A9-7E40-422E-A5D6-C3F6C63F8591}', 'Vishal Group2', '{CD1E33D1-1666-49B9-83BE-067687E4DDD6}');
INSERT INTO MYGROUP (PK_GROUP, DESCRIPTION, LINKED_TO_GROUP) VALUES ('{5EAC9866-F406-4BBD-B7B3-5CEEC3877C9B}', 'Vishal Group2.1', '{2E15A2A9-7E40-422E-A5D6-C3F6C63F859 1}');
INSERT INTO MYGROUP (PK_GROUP, DESCRIPTION, LINKED_TO_GROUP) VALUES ('{A326E6E3-030E-493B-AA0E-DC5D90DB080F}', 'Vishal Group2.1.1', '{5EAC9866-F406-4BBD-B7B3-5CEEC3877C9B}');
INSERT INTO MYGROUP (PK_GROUP, DESCRIPTION, LINKED_TO_GROUP) VALUES ('{3CF1FE37-EEC0-4E79-A3C5-DB78F6A9BC05}', 'Vishal Group3', '{CD1E33D1-1666-49B9-83BE-067687E4DDD6}');
INSERT INTO MYGROUP (PK_GROUP, DESCRIPTION, LINKED_TO_GROUP) VALUES ('{1EC302C8-0AB3-4F67-B47A-CC43401DF4ED}', 'Vishal Group4', '{CD1E33D1-1666-49B9-83BE-067687E4DDD6}');
INSERT INTO MYGROUP (PK_GROUP, DESCRIPTION, LINKED_TO_GROUP) VALUES ('{2EB81764-04FA-4DDA-9AAB-A607BDC2756D}', 'Vishal Group4.1', '{1EC302C8-0AB3-4F67-B47A-CC43401DF4ED}');
INSERT INTO MYGROUP (PK_GROUP, DESCRIPTION, LINKED_TO_GROUP) VALUES ('{7D939081-13F0-404C-9F2F-5222C628FDCC}', 'Sample BOMs', '{11111111-111-1111-1111-111111111111}');
INSERT INTO MYGROUP (PK_GROUP, DESCRIPTION, LINKED_TO_GROUP) VALUES ('{C77D2255-AC47-461D-BEE5-7F3154C23AF1}', 'Test1', '{11111111-111-1111-1111-111111111111}');
INSERT INTO MYGROUP (PK_GROUP, DESCRIPTION, LI NKED_TO_GROUP) VALUES ('{D054539A-BBBA-4E3F-9746-1522FF8A1E89}', 'Test2', '{11111111-111-1111-1111-111111111111}');
INSERT INTO MYGROUP (PK_GROUP, DESCRIPTION, LINKED_TO_GROUP) VALUES ('{71B4751C-7096-4FB9-8D71-6BB19A3D9ED9}', 'Trailer Assy', '{11111111-111-1111-1111-111111111111}');
INSERT INTO MYGROUP (PK_GROUP, DESCRIPTION, LINKED_TO_GROUP) VALUES ('{F702BABB-73B0-4A49-B442-1C7C8A126335}', 'WIP', '{11111111-111-1111-1111-111111111111}');
INSERT INTO MYGROUP (PK_GROUP, DESCRIPTION, LINKED_TO_GROUP) VALUES ('{FC74D59A-94E3-4209-BCEA-1B7606EA62F1}', 'mmmmmm', '{11111111-111-1111-1111-111111111111}');
INSERT INTO MYGROUP (PK_GROUP, DESCRIPTION, LINKED_TO_GROUP) VALUES ('{6E4354F9-B298-4737-9C18-51B4ACAC0734}', 'test1', '{111 11111-111-1111-1111-111111111111}');
INSERT INTO MYGROUP (PK_GROUP, DESCRIPTION, LINKED_TO_GROUP) VALUES ('{42A48EE0-D4EE-4828-BC11-D7F0D1FE5BEC}', 'test1', '{11111111-111-1111-1111-111111111111}');
INSERT INTO MYGROUP (PK_GROUP, DESCRIPTION, LINKED_TO_GROUP) VALUES ('{28AFE8E1-1221-4F94-BAE3-37EA6B360494}', 'test_2', '{11111111-111-1111-1111-111111111111}');
COMMIT;
------------------------------------------------------------------------------------------------------------------
After executing above SQLs, you would see below table data.
(Message over 64 KB, truncated)