Reg Exp - not as expected

Not often I ask questions myself, and perhaps my mind's just gone fuzzy this morning, but I'm having trouble doing a simple replace with regular expressions...
In the below example I just want to replace all occurences of "fred" with "freddies"...
SQL> ed
Wrote file afiedt.buf
1* select regexp_replace('this freddies is fred fred record', 'fred', 'freddies') from dual
SQL> /
REGEXP_REPLACE('THISFREDDIESISFREDFREDRECORD'
this freddiesdies is freddies freddies recordbut, obviously, I don't want the existing "freddies" to become "freddiesdies", it should stay as it is. So if I check for spaces either side of the search string (and take account of it maybe being at the start/end of the string...
SQL> ed
Wrote file afiedt.buf
1* select regexp_replace('this freddies is fred fred record', '(^| )fred( |$)', '\1freddies\2') from dual
SQL> /
REGEXP_REPLACE('THISFREDDIESISFREDFRE
this freddies is freddies fred record
SQL>It no longer replaces the "freddies" incorrectly, BUT it only replaces the first occurence of "fred" with "freddies" and not the latter one. ?!?!?!
If I put an extra space inbetween the two "fred"s then it works:
SQL> ed
Wrote file afiedt.buf
1* select regexp_replace('this freddies is fred fred record', '(^| )fred( |$)', '\1freddies\2',2) from dual
SQL> /
REGEXP_REPLACE('THISFREDDIESISFREDFREDRECO
this freddies is freddies freddies record
SQL>But I'm not going to have double spaces between the words and I can't determine where to insert them to make it work like this so it's not a feasible solution, although it does seem to highlight that the regular expression parser is not taking the space after the first match in the context of being the space before the second match.
Is that a bug in the regular expression parser, a feature of the way regular expressions work (i.e. expected) or am I doing something wrong with my search and replace reg.exp. strings?
Cheers

I think this will explain ..
SQL> select regexp_replace
2         ('this freddies is fred fred fred record',
3          '(^| )(fred)($| )','\1freddies\3') str
4 from dual
5 /
STR
this freddies is freddies fred freddies record
1 row selected.

Similar Messages

A doubt on REG EXP

Hi friends,
Please clarify the following doubt in Reg Exp.
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============
Anand
Bala_G
Chitra
David_C
Elango
Fathima
============
We have a set of characters as "abcdefghijklmnopqrstuvwxyz0123456789".
Now we need to find the count of EMP_NAMES whose characters (any) are not in the list of characters in the above list. In this example, the result should be 2. i.e., 'Bala_D' and 'David_C'. The query should be like:
Declare
v_string varchar2(50) := 'abcdefghijklmnopqrstuvwxyz0123456789';
v_count number(6);
Begin
select count(*)
into v_count
from emp
where regexp_like(emp_name, v_string);
dbms_output.put_line(v_count);
end;
========================
Thanks in advance!

Hi,
Welcome to the forum!
To use REGEXP_LIKE, you could say:
WHERE     REGEXP_LIKE ( emp_name
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              )However, it will be faster not to use regular expressions:
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Removed extra single-quote, after DAMorgan, below.

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[email protected]

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package dbmanager2;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.util.regex.*;
* @author nkelleh
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LeWalrus wrote:
Hi All,
I'm trying to implement a filefilter using regular expressions to allow wildcard searches. Here is the code I have so far. Works fine for a literal match, but if i enter a wildcard search (eg. abc123) it will not list any files, even though if I enter the full name for a file, it matches just fine. Anyone got any ideas because I'm just comming up blank?
...Try debugging your code. A good place to start is to print the following to see where things go wrong:
public boolean accept(File dir, String name)
if (new File(dir,name).isDirectory())
    System.out.println("Ignoring: "+new File(dir,name));
    return false;
else
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    System.out.println("Accept: "+dir.getName()+"? "+matcher.matches());
    return matcher.matches();
}

REG EXP pattern ?

Hi Folks;
I need to create a reg exp pattern with these rules :
mpexprfinal      : mpexprUnit(\ OROP\ mpexprUnit)*
mpexprUnit      : mp(\ AND\ mp)*minusplusexpr
minusplusexpr :     "\ $+$\ " or "\ $-$\ "
mp : "[A-Z]{1}[0-9]{6}" (ex: I123456)
OROP : ","
Help me please!
Edited by: Moostiq on 2 mai 2011 16:52
Edited by: Moostiq on 2 mai 2011 16:52

Hi,
I don't know of any really good way to assign names to sub-patterns in a regular expression, and then use those names in bigger expressions.
You can (sort of) do the same thing in SQL, by assigning column aliases to string literals (as in def_1, below), or concatentions of literals and previouslly defined aliases (as in def_2):
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     ,     '[A-Z]{1}[0-9]{6}'     AS mp
     ,     ';'               AS orop
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,     def_2        AS
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     ,     mp || '( AND '
             || mp
             || ')*'          AS mpexprunit
     FROM    def_1
SELECT     x.*
FROM          table_x     x
CROSS JOIN     def_2     d
WHERE     REGEXP_LIKE ( x.txt
              , d.mpexprunit || '('
                             || d.orop
                       || '|'
                       || d.mpexprunit
                       || ')*'
;Take this as pseudo-code. I'm not sure it will do anything. (I can't test it until you post some sample data).
If it does run, I'm not sure it will do what you want (since you haven't explained what you want).
You may find it easier just to repeat the expressions in your code. An approach like the one above is most useful when the definitions (mp, mpexprunit, and so on) change frequently.
I hope this answers your question.
If not, post a little sample data (CREATE TABLE and INSERT statements, relevant columns only) for all tables, and also post the results you want from that data.
Explain, using specific examples, how you get those results from that data.
Always say which version of Oracle you're using. I'm not sure you'll need any features that were added after Oracle 10.1, but why take a chance?

Reg Exp confusion when searching for a '(' char

Hello,
I am trying to extract the name from the following HTML.
onclick="searchCitationAuthor('Inoue, K.', true);">I want to be able to extract 'Inoue, K.'.
My regular expression is as follows.
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I think the ')' char is confusing things.
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Message was edited by:
VanJay011379
Sorry, I realize i was missing a ';' char. I thought the "\\)" was causing problems. Move on, nothing to see here LOL : )

why not
String regex = "searchCitatationAuthor\\s*\\(\\s*'([^']*)'"
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~~~~~~~~~~~~~~~~~~
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#define IncludedThreadTool
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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gcc -I/usr/local/java/include -I/usr/local/java/include/linux ThreadTool.c -c -o libThreadTool.so
When I run the java program to test it, I get the following
Exception in thread "main" java.lang.UnsatisfiedLinkError: /usr/home/apota/libThreadTool.so: /usr/home/apota/libThreadTool.so: ELF file's phentsize not the expected size
at java.lang.ClassLoader$NativeLibrary.load(Native Method)
at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1419)
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1343)
at java.lang.Runtime.loadLibrary0(Runtime.java:749)
at java.lang.System.loadLibrary(System.java:820)
at ThreadTool.<clinit>(ThreadTool.java:21)
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(FYI: I am trying ot get the status of a Thread in Java using the JVMDI C API)

aldus99 wrote:
I use the following command to compile on Linux
gcc -I/usr/local/java/include -I/usr/local/java/include/linux ThreadTool.c -c -o libThreadTool.so
I could be wrong, but it looks like you're invoking gcc all wrong.
1) You're using the -c flag which tells the compiler to only compile, yet you're trying to also link.
2) The last time that I used gcc, I believe you had to use a special flag to tell it that you wanted a shared library... something like -G. (It's not smart like Kai's KCC or Forte).
3) On top of all that, you may have to use a -thread option to make sure you are generating multi-thread safe code.
I suggest taking a second look at the man pages for gcc.
God bless,
-Toby Reyelts

Cron tab not working --- exp not found message

Hai All
My database is Oracle 9i in AIX
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Script
====
export ORACLE_SID=HIL
exp system/2007 file=/arch/export/hilexpbacktest.dmp log=/arch/export/hilex
pback.log full=Y
Crontab -Sheduling as oracle user
==========================
32 11 * * * /oracle/oracle9i/script/dailybackup
Error in mail
=========
From daemon Tue Apr 10 11:33:00 2007
Received: (from daemon@localhost)
by HIL1 (AIX5.3/8.13.4/8.11.0) id l3A6X0Nb729150
for oracle; Tue, 10 Apr 2007 11:33:00 +0500
Date: Tue, 10 Apr 2007 11:33:00 +0500
From: daemon
Message-Id: <200704100633.l3A6X0Nb729150@HIL1>
To: oracle
Subject: Output from cron job /oracle/oracle9i/script/dailybackup, oracle@HIL1,
exit status 127
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sr/java14/bin
CRONDIR=/var/spool/cron/crontabs
ATDIR=/var/spool/cron/atjobs
LOGNAME=oracle
HOME=/oracle/oracle9i
Your "cron" job executed on HIL1 on Tue Apr 10 11:32:00 IST 2007
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produced the following output:
/oracle/oracle9i/script/dailybackup[2]: exp: not found.
/oracle/oracle9i/script/dailybackup[5]: exp: not found.
=========
Any Enviornment variable missing? Where this variable set?
please give a solution...
Please help..
Shiju...

I guess the path of exp is unable to find by unix. Also in path variable you did not set the bin folder of oracle.
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When deploy multiple updates, some updates fail with Hash does not match expected

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Please mark this post accordingly if it answers your query or is helpful.

[svn:bz-trunk] 14330: BLZ-476 : Getting different error message in server' s servlet log and console log when class is not of expected type.

Revision: 14330
Revision: 14330
Author:   [email protected]
Date:     2010-02-22 10:03:03 -0800 (Mon, 22 Feb 2010)
Log Message:
BLZ-476 : Getting different error message in server's servlet log and console log when class is not of expected type.
QA: no
Doc: no
checkin test : pass
Ticket Links:
    http://bugs.adobe.com/jira/browse/BLZ-476
Modified Paths:
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Hi, wbracken ,
As known, there are 2 different questions I raised.
Regarding the reply for the second one (Nothing to do with Chinese), I noticed there are several similar issues found in this forum, and it seems no response could solve my that problem. The related methods and classes were also well check, as well as the parameters put.
Any way, your reponse was appreciated.
Thank you for the help.

[svn:bz-trunk] 14341: BLZ-476 : Getting different error message in server' s servlet log and console log when class is not of expected type.

Revision: 14341
Revision: 14341
Author:   [email protected]
Date:     2010-02-22 13:19:46 -0800 (Mon, 22 Feb 2010)
Log Message:
BLZ-476 : Getting different error message in server's servlet log and console log when class is not of expected type.
Ticket Links:
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Modified Paths:
    blazeds/trunk/modules/core/src/flex/messaging/MessageBrokerServlet.java
    blazeds/trunk/modules/core/src/flex/messaging/util/ClassUtil.java

Hi, wbracken ,
As known, there are 2 different questions I raised.
Regarding the reply for the second one (Nothing to do with Chinese), I noticed there are several similar issues found in this forum, and it seems no response could solve my that problem. The related methods and classes were also well check, as well as the parameters put.
Any way, your reponse was appreciated.
Thank you for the help.

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Edited by: Mark Reichman on Jun 28, 2010 2:42 PM

I did all that before posting the orignial post..
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res             boolean;
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Edited by: Mark Reichman on Jul 2, 2010 9:08 AM
Edited by: Mark Reichman on Jul 2, 2010 9:09 AM

Reg Exp - not as expected

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