Solved

Split string into 3 parts in Oracle

Posted on 2011-09-08
7
528 Views
Last Modified: 2012-05-12
Hello experts!

I need to split one string into 3 parts i.e. firstname, surname and degree.

While I am able to split into first and surname, I cannot extract the degree if there's one mentioned.

The strings to be split apart come in the following way:

Dr. James Example

Could you please assist me in splitting this string apart into three parts?

A million thanks in advance! I am curious about your appraches!


My current code is attached below. p_username is a parameter passed to the procedure!

select secondname || '\, ' || firstname || ' (LWF)' into ad_name from ( 
select substr(replace(p_username,',',''), 1, (instr (replace(p_username,',',''), ' ') - 1)) as firstname, 
substr (replace(p_username,',',''), (instr (replace(p_username,',',''), ' ',1,1) + 1), length (replace(p_username,',',''))) as secondname
from dual);

Open in new window

0
Comment
Question by:skahlert2010
[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
  • Learn & ask questions
  • 4
  • 3
7 Comments
 
LVL 74

Expert Comment

by:sdstuber
ID: 36502785
select
regexp_substr(p_username,'[^ ]+',1,1),
regexp_substr(p_username,'[^ ]+',1,2),
regexp_substr(p_username,'[^ ]+',1,3) from dual
0
 
LVL 74

Accepted Solution

by:
sdstuber earned 500 total points
ID: 36502816
if this is going to be used in pl/sql  don't use   select from dual

simply do direct pl/sql assignment


v_degree := regexp_substr(p_username,'[^ ]+',1,1);
v_firstname := regexp_substr(p_username,'[^ ]+',1,2);
v_surname := regexp_substr(p_username,'[^ ]+',1,3);



also,  your original query looks like it's searching for commas, but your example input doesn't contain any
what's the intent there?
0
 

Author Closing Comment

by:skahlert2010
ID: 36502844
Wow you're ingenious and very firm in regexp functions as I can tell by now.

Thanks a lot sdstuber! That was very quick!
0
Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 

Author Comment

by:skahlert2010
ID: 36502881
Well, would it be possible to have a fixed assignment for degree, first and surname?

For example If the person doesn't have a degree then
"regexp_substr(:p_username,'[^ ]+',1,1)  title" holds the firstname while the alias firstname contains the lastname. Lastname in turn is null.



0
 

Author Comment

by:skahlert2010
ID: 36502925
Okay, this is my solution to the problem I asked above! I know it's not perfect but it works:
select 
case when title not in ('Dr.', 'Prof.') then title else firstname end as firstname,
case when title not in ('Dr.', 'Prof.') then firstname else secondname end as secondname,
case when title in ('Dr.', 'Prof.') then title end as title
from (select
regexp_substr(:p_username,'[^ ]+',1,1) title,
regexp_substr(:p_username,'[^ ]+',1,2) firstname,
regexp_substr(:p_username,'[^ ]+',1,3) secondname from dual)

Open in new window

0
 
LVL 74

Expert Comment

by:sdstuber
ID: 36503361
that should work,
I'd have done it something like this...
check to see if there were 3 names, if so use them all, if not, skip the title


SELECT NVL2(s3, s1, NULL) title, NVL2(s3, s2, s1) firstname, NVL(s3, s2) surname
  FROM (SELECT REGEXP_SUBSTR(:p_username, '[^ ]+', 1, 1) s1,
               REGEXP_SUBSTR(:p_username, '[^ ]+', 1, 2) s2,
               REGEXP_SUBSTR(:p_username, '[^ ]+', 1, 3) s3
             from dual)
0
 

Author Comment

by:skahlert2010
ID: 36504192
Thanks sdstuber!

Nice solution! I'll adopt it! Sometimes it's amazing how many ways lead to Rome!

Take care!
0

Featured Post

PeopleSoft Has Never Been Easier

PeopleSoft Adoption Made Smooth & Simple!

On-The-Job Training Is made Intuitive & Easy With WalkMe's On-Screen Guidance Tool.  Claim Your Free WalkMe Account Now

Question has a verified solution.

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

If you find yourself in this situation “I have used SELECT DISTINCT but I’m getting duplicates” then I'm sorry to say you are using the wrong SQL technique as it only does one thing which is: produces whole rows that are unique. If the results you a…
This article describes how to use the timestamp of existing data in a database to allow Tableau to calculate the prior work day instead of relying on case statements or if statements to calculate the days of the week.
Via a live example, show how to take different types of Oracle backups using RMAN.
This video shows how to recover a database from a user managed backup
Suggested Courses

631 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question