Solved

Pattern matching question in SYBASE.

Posted on 2006-06-30
5
1,175 Views
Last Modified: 2012-06-27
Can anyone help me with this one. This should be straight forward but I cannot seem to get a good answer nmyself. I have a column in a table that is char(20) and is comprised of numeric values (99%) with a few non numeric values. I wish to select only the numeric values which vary in length from 1 digit to 9 digits.
Does anyone know an easy way to do this ?
Thanks.
Matthew.
0
Comment
Question by:matthewvaughan
5 Comments
 
LVL 2

Accepted Solution

by:
TadHawkins earned 250 total points
ID: 17019943
create table #N (N char(20))

insert #N select "123"
insert #N select "1d3"
insert #N select "xyz"

select *
from   #N
where  N like "%[a-zA-Z]%"

If you have other characters like !@#$%^&*() you can include those within the brackets as well ( just make sure that the first character inside the brackets is not the ^ as that has a special meaning in that position).

0
 
LVL 10

Expert Comment

by:bret
ID: 17021064
Won't that get rows that contain an alphabetic character, rather than rows that
are valid numerics?

Also doesn't work well for values such as

-123.456  (a valid number)
-123.4.56 (not a valid number)

27e5  ( a valid number)
2e7e5 ( not a valid number)

But if the problem is just positive integers, I would try something similar to
that - perhaps

select * from #n where patindex("%[^1234567890]%", N) = 0
go



An "isnumeric()" built-in function is coming in the ASE 15.0.1 release (around August/September 2006).
0
 
LVL 14

Expert Comment

by:Jan_Franek
ID: 17031151
one not very elegant approach: try to convert it to numeric type - if it fails, it wan not numeric :-)
but you have to use cursor to make it work and try row by row, so if your table is big, it will probably take a long time
0
 
LVL 6

Expert Comment

by:ChrisKing
ID: 17036795
WHERE columnname NOT LIKE '%[^0-9]%'   -- integers

WHERE columnname NOT LIKE '%[^0-9.]%'   -- and decimal values too
0
 
LVL 6

Expert Comment

by:ChrisKing
ID: 17042846
hmmm - accepted the only answer that does not work
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

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

Note: This is the second blog post in a series on email clearinghouses (https://www.xmatters.com/alert-management/blog-email-has-failed-us?utm_campaign=70138000000ydLoAAI&utm_source=exex&utm_medium=article&utm_content=blog-post).   Every month t…
Introduction This article is intended for those who are new to PHP error handling (https://www.experts-exchange.com/articles/11769/And-by-the-way-I-am-New-to-PHP.html).  It addresses one of the most common problems that plague beginning PHP develop…
This Micro Tutorial hows how you can integrate  Mac OSX to a Windows Active Directory Domain. Apple has made it easy to allow users to bind their macs to a windows domain with relative ease. The following video show how to bind OSX Mavericks to …
As a trusted technology advisor to your customers you are likely getting the daily question of, ‘should I put this in the cloud?’ As customer demands for cloud services increases, companies will see a shift from traditional buying patterns to new…

864 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

Need Help in Real-Time?

Connect with top rated Experts

23 Experts available now in Live!

Get 1:1 Help Now