Summarize the costs with hierarchical query

Hello Oracle experts! I need some advice because I am very new to the hierarchical queries really new to Oracle. I have the following table:

CREATE TABLE routes
(
     from  VARCHAR2(15), 
     to  VARCHAR2(15), 
     cost NUMBER
); 
INSERT INTO routes VALUES('San Francisco', 'Denver', 1000); 
INSERT INTO routes VALUES('San Francisco', 'Dallas', 10000); 
INSERT INTO routes VALUES('Denver', 'Dallas', 500); 
INSERT INTO routes VALUES('Denver', 'Chicago', 2000); 
INSERT INTO routes VALUES('Dallas', 'Chicago', 600); 
INSERT INTO routes VALUES('Dallas', 'New York', 2000); 
INSERT INTO routes VALUES('Chicago', 'New York', 3000);
INSERT INTO routes VALUES('Chicago', 'Denver', 2000);

I want to calculate the costs through the hierarchy, to get the following result:

FROM            TO             COST
--------------- --------------- -----
San Francisco Dallas   10000   //San Francisco -> Dallas
San Francisco Denver 1000    //San Francisco -> Denver
San Francisco Chicago   10600   //San Francisco -> Dallas -> Chicago (10000 + 600)
San Francisco New York   12000   //San Francisco -> Dallas -> New York (10000 + 200)
San Francisco Chicago   3000    //San Francisco -> Denver -> Chicago (1000 + 2000)
San Francisco Dallas   1500    //San Francisco -> Denver -> Dallas (1000 + 500) 
etc..

I from imagined using the CONNECT BY PRIOR statement to get the hierarchy and have written a query that runs through him:

SELECT CONNECT_BY_ROOT from, to
 FROM routes 
  CONNECT BY NOCYCLE PRIOR to = from;

But I have absolutely no idea how summarize right costs, I could use some help.

Thank you for your advice.

Hello

Here's a way

SELECT DISTINCT

CONNECT_BY_ROOT from_city AS from_city

to_city

, SYS_CONNECT_BY_PATH (to_city, '->') is ARRESTED - if wanted

, XMLQUERY (SYS_CONNECT_BY_PATH (cost, '+'))

BACK CONTENT

) .getnumberval () SUCH as total_cost

CHANNELS

WHERE CONNECT_BY_ROOT from_city <> to_city

CONNECT BY NOCYCLE from_city = to_city PRIOR

ORDER BY from_city

to_city

stops

;

FROM and TO are the keywords of the Oracle, they really ugly column names. I have changed the from_city and to_city.

Tags: Database

Similar Questions

How to group and summarize the values with a vertical drop of 100?
Dear gurus
How to group and summarize the values with a vertical drop of 100 as the data indicated below:

Cas_Cod_ Cas_Amt_ Description
300 1000A
301 200 B
302 350 C
400 500 A
401 100 B
402 25

Now the data should be grouped like this
A (300,400) = 1500
(301,401) B = 300
C (302,402) = 375

Make sure that I don't have a column as description in my table to group data on description, its here just to give u an example.
Hello

using mod for hundreds:
```
with x as
(
  select 300 code, 1000 amt, 'A' descr from dual union all
  select 301 code, 200 amt, 'B' descr from dual union all
  select 302 code, 350 amt, 'C' descr from dual union all
  select 400 code, 500 amt, 'A' descr from dual union all
  select 401 code, 100 amt, 'B' descr from dual union all
  select 402 code, 25 amt, 'C' descr from dual
  )
   select mod(code,100) code, sum (amt)
    from x
   group by mod(code,100);
```
Using the mod you get the rest of a division, so mod (300,100) = 0, mod (301,100) = 1, etc.

Herald tiomela
http://htendam.WordPress.com

Help with hierarchical query

I'm trying to parse each string inside of individual characters. For this, I used the link by the hierarchical query clause. I am not able to use connect by correctly. Here is my example.
with the CBC as)
Select 1: the nurse, 'abc' double union all Str
Select 2: the nurse, '123' Str of all union double
Select 3: the nurse, "pqr xyz" dual union all Str
Select option 4: the nurse, 'john doe' double Str
)
Select the level, homobasidiomycetes, substr(s.str,level,1) as chr
s of the CBC
connect nocycle level < = length (homobasidiomycetes)
/
The above query returns 3 028 lines when I want that 21. Adding a distinct to select, it's what I want.
with the CBC as)
Select 1: the nurse, 'abc' double union all Str
Select 2: the nurse, '123' Str of all union double
Select 3: the nurse, "pqr xyz" dual union all Str
Select option 4: the nurse, 'john doe' double Str
)
Select distinct level, homobasidiomycetes, substr(s.str,level,1) as chr
s of the CBC
connect nocycle level < = length (homobasidiomycetes)
order by str, level
/
For a large data set I could end up with several million rows before the separate would lead. So, how can I restrict the connection by clause to go within each line.

Assuming that the AI is the primary key, you could do this:
```
with src as (
  select 1 as rn, 'abc' as str from dual union all
  select 2 as rn, '123' as str from dual union all
  select 3 as rn, 'pqr xyz' as str from dual union all
  select 4 as rn, 'john doe' as str from dual
)
select level,
      s.str,
      substr(s.str,level,1) as chr
from src s
connect by level <= length(s.str)
          and prior rn = rn
          and prior dbms_random.value is not null;
```
See DBMS_RANDOM.value in a hierarchical solution for string to table? for an exchange of views around the case.

Getting the line without the use of hierarchical query values
Hi all

I want to know the hierarchical values without using a hierarchical query. I have two tables EMP, DEPT

EMP table is to have two columns (empid, mgrid)
DEPT table is to have two columns (deptid, empid)

Data of the EMP

1,
2, 1
3, 2
4, 3

Data DEPT

10, 1

Each time, I gave deptid = 10, I need to know the this deptid empid then who is this empid (child levels as well). In this case, the output should be
1
2
3
4

I don't want to use hierarchical query.

Thanks in advance.

Thank you
PAL
You can use the RECURSIVE subquery, if you are 11 GR 2, like this
```
SQL> with EMP (empid,mgrid) as
  2  (
  3  select 1,null from dual union all
  4  select 2, 1 from dual union all
  5  select 3, 2 from dual union all
  6  select 4, 3 from dual
  7  ),
  8  dept(deptid,empid) as
  9  (
 10  select 10, 1  from dual
 11  ),
 12  t(empid,mgrid) as
 13  (
 14  select empid,mgrid
 15  from emp e
 16  where empid in (
 17      select d.empid
 18      from dept d
 19      where deptid = 10
 20                  )
 21  union all
 22  select e.empid,e.mgrid
 23  from emp e, t
 24  where e.mgrid = t.empid
 25  )
 26  select *
 27  from t;

     EMPID      MGRID
---------- ----------
         1
         2          1
         3          2
         4          3
```
Yet, the question is valid - why can't use you a hierarchical query?

Published by: JAC on May 29, 2013 12:37

How to use order by with hierarchical query
I have a hierarchical query basically he brings an organization chart. We start with the Manager id, get everything that employees of the person. If the employee is also a Manager I want to get the employees of that person and turn them right after that person. I don't bother with the entire query but relevant part is:
```
       START WITH em.mgr_id = pi_mgr_id
      CONNECT BY nocycle PRIOR em.emp_id = em.mgr_id;
```
Where pi_mgr_id is a parameter passed to the procedure and the em is the alias of the emp_mgr_relationship table that contains emp_id and mgr_id. It works very well. What I want now is for employees who work for the same Manager appear in the order of name. The table that contains the names of the employees is an alias as pe and the name column is called name1. I added the following:
```
       START WITH em.mgr_id = pi_mgr_id
      CONNECT BY nocycle PRIOR em.emp_id = em.mgr_id
        order by pe.name1;
```
But what to put the entire list in the order of name. What I want is for the employees who work for the same manager be in name order. We're going to the manager that I want to the body is named Frank. I want to get it
```
EMP_NAME    MGR_NAME
Allen       Frank
Beth        Frank
Alex        Beth
Charles     Beth
Ed          Beth
Dean        Frank
George      Frank
Benny       George
David       George
Sam         George
Dan         Sam
Harry       Sam
John        Sam
Terry       George
James       Frank
Ken         Frank
Mike        Ken
Warren      Ken
```
How can I get the list in order?

Published by: kendenny on July 28, 2010 07:31
Make use of the ORDER of Friars and SŒURS clause in the hierarchical queries to define the order of child columns.
```
START WITH em.mgr_id = pi_mgr_id
      CONNECT BY nocycle PRIOR em.emp_id = em.mgr_id
        *order siblings by name1;*
```

Problem with hierarchical query in function PL\SQL

I have a simple table containing the ID of the parent

-Create table

create the table1 table:

(

ID NUMBER (12) not null,

year number 4.

month NUMBER (2),

parent_id NUMBER (12)

);

-Create/recreate primary, unique and foreign key constraints

change the table1 table:

Add primary key constraint PK_TABLE1 (ID);

change the table1 table:

Add the foreign key constraint FK_TABLE1_PARENT (PARENT_ID)

reference TABLE1 (ID);

data: