Tricky Hierarchical Query
Hi, I am stumped on how to do a particular hierarchical query. The query needs to be written entirely in SQL. I have a table (ACCOUNT) with 3 columns of interest in it, ACCOUNT_ID, ROOT_ID, PARENT_ID. Every row represents an account. If an account is the root (top-most), then the ROOT_ID and PARENT_ID columns are null. If an account is a parent, then the ROOT_ID is populated but the PARENT_ID is null. Accounts can be nested multiple levels deep. I need to find all of the accounts that belong to the root of the given account but not include any accounts that are children of the given account. Does this make sense? I.e. 5 6 7 8 9 10 11 1213 14 I'm not sure if my tree diagram will be dispalyed properly after I email this but in essence if 8 is the given account number, I want everything returned except for 8, 11 and 12. Thanks in advance! -w __ Do You Yahoo!? Get email alerts NEW webcam video instant messaging with Yahoo! Messenger http://im.yahoo.com -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Walter K INET: [EMAIL PROTECTED] Fat City Network Services-- (858) 538-5051 FAX: (858) 538-5051 San Diego, California-- Public Internet access / Mailing Lists To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (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).
RE: Tricky Hierarchical Query
Oracle has a very good section on prior and connect by. These combined level let you walk a tree - so to speak. I use them all the time. Look up the key words. You'll find it. -Original Message- Sent: Friday, August 31, 2001 12:07 PM To: Multiple recipients of list ORACLE-L Hi, I am stumped on how to do a particular hierarchical query. The query needs to be written entirely in SQL. I have a table (ACCOUNT) with 3 columns of interest in it, ACCOUNT_ID, ROOT_ID, PARENT_ID. Every row represents an account. If an account is the root (top-most), then the ROOT_ID and PARENT_ID columns are null. If an account is a parent, then the ROOT_ID is populated but the PARENT_ID is null. Accounts can be nested multiple levels deep. I need to find all of the accounts that belong to the root of the given account but not include any accounts that are children of the given account. Does this make sense? I.e. 5 6 7 8 9 10 11 1213 14 I'm not sure if my tree diagram will be dispalyed properly after I email this but in essence if 8 is the given account number, I want everything returned except for 8, 11 and 12. Thanks in advance! -w __ Do You Yahoo!? Get email alerts NEW webcam video instant messaging with Yahoo! Messenger http://im.yahoo.com -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Walter K INET: [EMAIL PROTECTED] Fat City Network Services-- (858) 538-5051 FAX: (858) 538-5051 San Diego, California-- Public Internet access / Mailing Lists To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (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). -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: John Lewis INET: [EMAIL PROTECTED] Fat City Network Services-- (858) 538-5051 FAX: (858) 538-5051 San Diego, California-- Public Internet access / Mailing Lists To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (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).
RE: Tricky Hierarchical Query
Hi,
I've been through with that lately, modify this to see how it helps.
SELECT LPAD(' ',5*(LEVEL-1)) ||name||' empno:'||emp_no ||' '||'works
for:'||functional_mgr_name
FROM HRTABLE
where functional_mgr_badge =emp_no
START WITH emp_no= emp_no
CONNECT BY PRIOR emp_no = functional_mgr_badge
Sunil Nookala
Oracle DBA
Dell Corporation
Austin, TX
-Original Message-
Sent: Friday, August 31, 2001 3:20 PM
To: Multiple recipients of list ORACLE-L
Oracle has a very good section on prior and connect by.
These combined level let you walk a tree - so to speak.
I use them all the time. Look up the key words. You'll find it.
-Original Message-
Sent: Friday, August 31, 2001 12:07 PM
To: Multiple recipients of list ORACLE-L
Hi,
I am stumped on how to do a particular hierarchical
query. The query needs to be written entirely in SQL.
I have a table (ACCOUNT) with 3 columns of interest in
it, ACCOUNT_ID, ROOT_ID, PARENT_ID. Every row
represents an account. If an account is the root
(top-most), then the ROOT_ID and PARENT_ID columns are
null. If an account is a parent, then the ROOT_ID is
populated but the PARENT_ID is null. Accounts can be
nested multiple levels deep.
I need to find all of the accounts that belong to the
root of the given account but not include any accounts
that are children of the given account. Does this make
sense?
I.e. 5
6 7
8 9 10
11 1213 14
I'm not sure if my tree diagram will be dispalyed
properly after I email this but in essence if 8 is
the given account number, I want everything returned
except for 8, 11 and 12.
Thanks in advance!
-w
__
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Author: Walter K
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Author: John Lewis
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RE: Tricky Hierarchical Query
Title: RE: Tricky Hierarchical Query What would the data in your table look like, for the tree in the example? e.g. 6 is a child of 5, but a parent of 8 and 9. Would the data look like this? account_id root_id parent_id 5 null null 6 5 null 8 5 6 9 5 6 -Original Message- From: Walter K [mailto:[EMAIL PROTECTED]] I am stumped on how to do a particular hierarchical query. The query needs to be written entirely in SQL. I have a table (ACCOUNT) with 3 columns of interest in it, ACCOUNT_ID, ROOT_ID, PARENT_ID. Every row represents an account. If an account is the root (top-most), then the ROOT_ID and PARENT_ID columns are null. If an account is a parent, then the ROOT_ID is populated but the PARENT_ID is null. Accounts can be nested multiple levels deep. I need to find all of the accounts that belong to the root of the given account but not include any accounts that are children of the given account. Does this make sense? I.e. 5 6 7 8 9 10 11 12 13 14 I'm not sure if my tree diagram will be dispalyed properly after I email this but in essence if 8 is the given account number, I want everything returned except for 8, 11 and 12.
RE: Tricky Hierarchical Query
Sorry. I mis-stated the relationship to the parent in my original email. Parent_id is always populated unless the row is a root row. The data for all rows in my sample tree would be: ACCOUNT_ID ROOT_ID PARENT_ID 5null null 65 5 75 5 85 6 95 6 10 5 7 11 5 8 12 5 8 13 5 9 14 5 10 -w --- Jacques Kilchoer [EMAIL PROTECTED] wrote: What would the data in your table look like, for the tree in the example? e.g. 6 is a child of 5, but a parent of 8 and 9. Would the data look like this? account_id root_idparent_id 5 null null 6 5null 8 5 6 9 5 6 -Original Message- From: Walter K [mailto:[EMAIL PROTECTED]] I am stumped on how to do a particular hierarchical query. The query needs to be written entirely in SQL. I have a table (ACCOUNT) with 3 columns of interest in it, ACCOUNT_ID, ROOT_ID, PARENT_ID. Every row represents an account. If an account is the root (top-most), then the ROOT_ID and PARENT_ID columns are null. If an account is a parent, then the ROOT_ID is populated but the PARENT_ID is null. Accounts can be nested multiple levels deep. I need to find all of the accounts that belong to the root of the given account but not include any accounts that are children of the given account. Does this make sense? I.e. 5 6 7 8 9 10 11 1213 14 I'm not sure if my tree diagram will be dispalyed properly after I email this but in essence if 8 is the given account number, I want everything returned except for 8, 11 and 12. __ Do You Yahoo!? Get email alerts NEW webcam video instant messaging with Yahoo! Messenger http://im.yahoo.com -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Walter K INET: [EMAIL PROTECTED] Fat City Network Services-- (858) 538-5051 FAX: (858) 538-5051 San Diego, California-- Public Internet access / Mailing Lists To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (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).
RE: Tricky Hierarchical Query
Title: RE: Tricky Hierarchical Query (P.S. - original requirement listed below) The best I could come up with would be using connect by and prior, as suggested by another poster, in two queries with the minus set operator. e.g. SQL select * from account ; ACCOUNT_ID ROOT_ID PARENT_ID -- -- -- 5 6 5 5 7 5 5 8 5 6 9 5 6 10 5 7 11 5 8 12 5 8 13 5 9 14 5 10 10 rows selected. SQL -- first select gets the whole tree SQL -- starting with the root for account 8 SQL -- second query gets 8 and its children SQL select account_id 2 from account 3 connect by prior account_id = parent_id 4 start with account_id = (select root_id from account where account_id = 8) 5 minus 6 select account_id 7 from account 8 connect by prior account_id = parent_id 9 start with account_id = 8 ; ACCOUNT_ID -- 5 6 7 9 10 13 14 7 rows selected. Jacques R. Kilchoër x8816 -Original Message- From: Walter K [mailto:[EMAIL PROTECTED]] Sent: vendredi, 31. août 2001 12:43 To: Jacques Kilchoer; '[EMAIL PROTECTED]' Cc: '[EMAIL PROTECTED]' Subject: RE: Tricky Hierarchical Query Sorry. I mis-stated the relationship to the parent in my original email. Parent_id is always populated unless the row is a root row. The data for all rows in my sample tree would be: ACCOUNT_ID ROOT_ID PARENT_ID 5 null null 6 5 5 7 5 5 8 5 6 9 5 6 10 5 7 11 5 8 12 5 8 13 5 9 14 5 10 -Original Message- From: Walter K [mailto:[EMAIL PROTECTED]] I am stumped on how to do a particular hierarchical query. The query needs to be written entirely in SQL. I have a table (ACCOUNT) with 3 columns of interest in it, ACCOUNT_ID, ROOT_ID, PARENT_ID. Every row represents an account. If an account is the root (top-most), then the ROOT_ID and PARENT_ID columns are null. If an account is a parent, then the ROOT_ID is populated but the PARENT_ID is null. Accounts can be nested multiple levels deep. I need to find all of the accounts that belong to the root of the given account but not include any accounts that are children of the given account. Does this make sense? I.e. 5 6 7 8 9 10 11 12 13 14 I'm not sure if my tree diagram will be dispalyed properly after I email this but in essence if 8 is the given account number, I want everything returned except for 8, 11 and 12.
