Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
Solved

# Oralce query question

Posted on 2011-02-19
Medium Priority
346 Views
I have an Oracle 11g table and its contents are like this:
ID   V1   F1   F2    F3
=======================
1    p    12   null  null
2    q    null 11    null
2    r    null null  17
4    r    null null  23
5    p    8    null  null
4    p    18   null  null
4    q    null 56    null
7    p    17   null  null

How can I write a query that will give following O/P:
ID   F1   F2    F3
=======================
1    12   null  null
2    null 11    17
4    18   56    23
5    8    null  null
7    17   null  null

The Value of V1 in the first table could only be "p", "q" or "r".
If V1=p then we only need its F1 value.
If V1=q then we only need its F2 value.
If V1=r then we only need its F3 value.
And the O/P needs to have unique ID value.
0
Question by:toooki
[X]
###### Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

• Help others & share knowledge
• Earn cash & points

LVL 26

Accepted Solution

tigin44 earned 900 total points
ID: 34934767

SELECT ID, MIN(F1) AS F1, MIN(F2) AS F2, MIN(F3) AS F3
FROM yourTable
GROUP BY ID
0

LVL 77

Assisted Solution

slightwv (䄆 Netminder) earned 900 total points
ID: 34934844
Just in case the real world requirement requires a little more logic behind it, you can do something similar with case/decode statements:

select id,max(F1) F1,max(F2) F2,max(F3) F2
from
(
select id,
case when V1='p' then F1 else null end F1,
case when V1='q' then F2 else null end F2,
case when V1='r' then F3 else null end F3
from tab1
)
group by id
/
0

Author Comment

ID: 34935037
Yes the solution works perfectly.  But my mistake. I assumed that I could create a view like the below table on which I could use the query that you gave to me.
ID   V1   F1   F2    F3
=================

But I could not create such view. Could you please look at the question that I could correctly put here.
http://www.experts-exchange.com/Database/Oracle/Q_26833931.html
0

## Featured Post

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Recently, Microsoft released a best-practice guide for securing Active Directory. It's a whopping 300+ pages long. Those of us tasked with securing our company’s databases and systems would, ideally, have time to devote to learning the ins and outs…
Microsoft Access is a place to store data within tables and represent this stored data using multiple database objects such as in form of macros, forms, reports, etc. After a MS Access database is created there is need to improve the performance and…
This video shows how to copy an entire tablespace from one database to another database using Transportable Tablespace functionality.
Polish reports in Access so they look terrific. Take yourself to another level. Equations, Back Color, Alternate Back Color. Write easy VBA Code. Tighten space to use less pages. Launch report from a menu, considering criteria only when it is filled…
###### Suggested Courses
Course of the Month7 days, 1 hour left to enroll