NEAR operator alternative when not using. oracle Text ?

hi,
I'm working on a project where i would need a Oracle Text 'NEAR like' operator ...
here is my scenario ...
in db we have Customers ... and every customer has some criterias like different search words( names, towns,cars,etc...) so for every customer i can create an SQL query out of criterias . ....
now .... we can have a criteria like. ...... WHERE fulltext like 'john%'. or even distance search line NEAR inside CONTAINS. ... but then the Oracle text index is needed .....
the only tAble on which Text index is created is our storage table that holds more then 4mil records and growing...
my question is ... is there any way to have a query that would do the same thing as NEAR but without Text index ?
here is how I start ....
I get full newspaper article text from our OCR library ......
then i need to check customer's criterias against this text to see which article is for which customer and then bind the article to the customer
I could do it without Oracle using RegEx , but criterias can get really complicated ... like customer wants only specific MEDIA, or specific category , type , only articles that are from medias that are from specific country etc ... and many more different criterias ... and all this can be wrapped inside brackets with ANDs, ORs, NOT. ....
So the only way to do it is to put it in Oracle and execute the correct query and let Oracle decide if the result is true or false .... but due to NEAR operator I need Oracle text ...
So if I decide to first insert article into our storage table which has Oracle text index to be able to do the correct search .... how fast will this be ????
will the the search become slower when there are 6mil records ? I know I can use FILTER BY to help Text index to do a better and quicker seach ... and how to optimize index ....but still
I'm always asking my self..... why insert the article in a table where there are already 6mil articles and execute query when I only need to check data on one single article and. i already know this article ...
I see two solutions :
- if there is alternative for NEAR without using Oracle text index then i would insert data into temporary table and execute query on this table..... table would always contain only this one article. maybe one option would be to have one 'temp' table with Oracle text index in which i insert this one article and with help of Oracle text based on this one article do the search , and then maybe on a daily basis clear index ..... or when the article is removed from the table ... but this would mean having two Orcle text indexes, cause we already have Oracle text index on our storage table anyway....
- another is to use Oracle text index and insert it into our storage table and hope for the best quick results ....
Maybe I'm exaggerating and query like WHERE id=1234 and CONTAINS(...). will execute faster then I think
If anyone would have any other suggestion I will be happy to try it ..
thanks,
Kris

Hi,
this is to my knowledge not possible. It is hard for Oracle to do, think about a table with many rows, every row with that column must be checked. So I think only a single varchar2 is possible. Maybe for you will a function work. It is possible to give a function as second parameter.
function return_signup
return varchar2
is
l_signup_name signup.signup_name%type;
begin
select signup_name
into l_signup_name
from signup
where signup_id = 1
and rownum = 1
return l_signup_name;
exception
when no_data_found
then
l_signup_name := 'abracadabra'; -- hope does not exist
return l_signup_name;
end;Now you can use above function in the contains.
select * from user_history_view users --, signup new_user
--where new_user.signup_id = 1
where contains(users.user_name, return_signup)>0;I didn't test the code! Maybe you have to adjust the function for your needs. But it is a idea how this can be done.
Otherwise you must make the check by normaly check the columns by simple using a join:
select * from user_history_view users, signup new_user
where new_user.signup_id = 1
and users.user_name = new_user.signup_name;Herald ten Dam
htendam.wordpress.com

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SCOTT@orcl_11gR2> Create Table Tbl_Product_Lookup
2    (
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2 into tbl_product_lookup (product_description) values ('test product')
3 into tbl_product_lookup (product_description) values ('test product and more')
4 into tbl_product_lookup (product_description) values ('another test product and more')
5 into tbl_product_lookup (product_description) values ('another test product')
6 into tbl_product_lookup (product_description) values ('test products')
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2 /
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2 on tbl_product_lookup (product_description)
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Elapsed: 00:00:00.10
Execution Plan
Plan hash value: 459057338
| Id | Operation                      | Name               | Rows | Bytes | Cost (%CPU)| Time     |
|   0 | SELECT STATEMENT               |                    |    38 | 3990 |    13 (16)| 00:00:01 |
|* 1 | COUNT STOPKEY                 |                    |       |       |            |          |
|   2 |   VIEW                         |                    |    38 | 3990 |    13 (16)| 00:00:01 |
|* 3 |    SORT UNIQUE STOPKEY         |                    |    38 |   988 |    12   (9)| 00:00:01 |
|   4 |     TABLE ACCESS BY INDEX ROWID| TBL_PRODUCT_LOOKUP |    38 |   988 |    11   (0)| 00:00:01 |
|* 5 |      DOMAIN INDEX              | PROD_DESC_TEXT_IDX |       |       |     4   (0)| 00:00:01 |
Predicate Information (identified by operation id):
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Hi,
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But I would like to utilize the Oracle Text index. Don't know your db version, but if you slightly redefine your index you can achieve this (at least on my 11g instance) :
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2 /
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2 /
1 row created.
SQL> insert into t_test_1 values ('Busines Management Practice')
2 /
1 row created.
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TEXT                             SCORE(1)
Management                              3
Execution Plan
Plan hash value: 4163886076
| Id | Operation                   | Name         | Rows | Bytes | Cost (%CPU)| Time     |
|   0 | SELECT STATEMENT            |              |     1 |    29 |     4   (0)| 00:00:01 |
|   1 | TABLE ACCESS BY INDEX ROWID| T_TEST_1     |     1 |    29 |     4   (0)| 00:00:01 |
|* 2 |   DOMAIN INDEX              | T_TEST_1_IDX |       |       |     4   (0)| 00:00:01 |
Predicate Information (identified by operation id):
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Note
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Not sure though if above method is already available in 9i ...
Message was edited by:
michaels

Issues using Oracle Text conditions

Hi all,
I'm facing an issue executing a query on a VIEW using Oracle Text Indexes.
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gebruiker g,
status s,
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AND t.statusinternid = si.statusid (+)
AND t.applicatiecd = NVL(:P0_APPLICATIECD, :F101_APPLICATIECD)
AND (t.categorieid = :P15_CATEGORIEID OR NVL(:P15_CATEGORIEID, 0) = 0)
AND (t.moduleid = :P15_MODULEID OR NVL(:P15_MODULEID, 0) = 0)
AND (t.statusid = :P15_STATUSID OR NVL(:P15_STATUSID, 0) = 0)
AND (t.statusinternid = :P15_INTSTATUSID OR NVL(:P15_INTSTATUSID, 0) = 0)
AND (t.versieid = :P15_VERSIEID OR NVL(:P15_VERSIEID, 0) = 0)
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Using oracle text

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primary key (user_id)
create table user_history (
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user_name varchar2(255),
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foreign key (user_id) references users on delete set null
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indextype is ctxsys.context parameters ('sync (on commit)');
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where new_user.signup_id = 1
and contains(users.user_name, 'bill')>0;
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Hi,
this is to my knowledge not possible. It is hard for Oracle to do, think about a table with many rows, every row with that column must be checked. So I think only a single varchar2 is possible. Maybe for you will a function work. It is possible to give a function as second parameter.
function return_signup
return varchar2
is
l_signup_name signup.signup_name%type;
begin
select signup_name
into l_signup_name
from signup
where signup_id = 1
and rownum = 1
return l_signup_name;
exception
when no_data_found
then
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select * from user_history_view users --, signup new_user
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where contains(users.user_name, return_signup)>0;I didn't test the code! Maybe you have to adjust the function for your needs. But it is a idea how this can be done.
Otherwise you must make the check by normaly check the columns by simple using a join:
select * from user_history_view users, signup new_user
where new_user.signup_id = 1
and users.user_name = new_user.signup_name;Herald ten Dam
htendam.wordpress.com

Document management system using oracle text

i plan to create document management system using oracle text with following features
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please help!

Have you ever considered doing this in Oracle Application Express (free on top of the Oracle database)? How about something like:
http://download-west.oracle.com/docs/cd/B31036_01/doc/appdev.22/b28839/up_dn_files.htm
Index the files using the CONTEXT index, and perhaps the docs' meta with it using the Oracle Text MULTI_COLUMN_DATASTORE, and then when you write your query for a report on the documents include a search string.
I've created a number of APEX-based document management systems and it is quite easy once you get the hang of using this environment. I suggest looking at some of the tutorials/how-to documents and you'll be on your way quickly.
Start with the upload application. Once you can get your documents in, create a report that shows everything except the document. Verify all of this works correctly.
Add some "items" to the page for the report, and include them as bind variables in the where clause.
After that, add your Oracle Text index to the database, and toss in a "text-field" item to the APEX page. Modify your report query, adding the CONTAINS clause, and use the newly created item as a bind variable. There's your keyword search.
Linking to Oracle Apps is done through API's and may be over database links.
Hope it helps. Though not a step-by-step how to document, this should point you in the right direction. Get familiar with APEX as that covers most of what you described.
-Ron

Searching using Oracle Text instead of LIKE '%'

Hello all,
I hope you help me in this:
I have a table looks like this
create table subscribers (
id numer(10),
first_name varchar2(30),
father_name varchar2(30),
grandfather_name varchar2(30),
last_name varchar2(30))
The application is built using Oracle Forms. Many times, the end users are not so sure of the spelling of the name, therefore they use the "%" wildcard with name fields. This will be reflected to the queries the application will send them to the Oracle Server.
We have the following queries
1) select *
from subscribers
where last_name like '%family_name%';
2) select *
from subscribers
where last_name like 'family_name%';
3) select *
from subscribers
where last_name like '%family_name%' and first_name like '%first_name%';
4) select *
from subscribers
where last_name like 'family_name%' and first_name like 'first_name%';
As well as searching on the father_name and grandfather_name fields. But most of the search are on the first_name and the last_name.
These queries are killing the server since we have millions of records. BTree indexes will not help here because of the LIKE and the "%"
I am thinking to use Oracle Text here, but I am not sure whether I have to go for a CONTEXT index on each individual column, or I can use the MULTI_COLUMN_DATASTORE indexing.
Any idea will be appreciated

The ctxcat index and catsearch operator are generally intended for usage with one text column and one or more columns of structured data. You would have to pick just one of your columns as the text column and the others as structured columns. I would be more inclined to use the multi_column_datastore with a context index and contains operator, so that you can search all of your columns as text columns.

Problem with blob column index created using Oracle Text.

Hi,
I'm running Oracle Database 10g 10.2.0.1.0 standard edition one, on windows server 2003 R2 x64.
I have a table with a blob column which contains pdf document.
Then, I create an index using the following script so that I can do fulltext search using Oracle Text.
CREATE INDEX DMCS.T_DMCS_FILE_DF_FILE_IDX ON DMCS.T_DMCS_FILE
(DF_FILE)
INDEXTYPE IS CTXSYS.CONTEXT
PARAMETERS('DATASTORE CTXSYS.DEFAULT_DATASTORE');
However, the index is not searchable and I check the following tables created by database for my index and found them to be empty as well !!
DR$T_DMCS_FILE_DF_FILE_IDX$I
DR$T_DMCS_FILE_DF_FILE_IDX$K
DR$T_DMCS_FILE_DF_FILE_IDX$N
DR$T_DMCS_FILE_DF_FILE_IDX$R
I wonder what's wrong with it.
My user has been granted the ctx_app role and I have other tables that store plain text which I use Oracle Text are fine. I even output the blob column and save as pdf file and they are fine.
However the database seems like not indexing my blob column although the index can be created without error.
Please advise.
Really appreciate anyone who can help.
Thank you.

The situation is I have already loaded a few pdf document into the table's blob column.
After I create the Oracle text index on this blob column, I find the system generated index tables listed in my earlier posting are empty, except for the 4th table.
Normally we'll see words inside the table where those are the words indexed by oracle text on my document.
As a result, no matter how i search for the index using select statement with contains operator, it will not give me any result.
I feel weird why the blob is not indexed. The content of the blob are actually valid because I tested this by export the content back to pdf and I can still view and search within the pdf.
Regards,
Jap.

Using Oracle Text in Oracle XML DB .

Hi all ,
The idea is simple ,i need to index all stored files in Oracle XML DB and the index should stay in Oracle DB . Using some 3 party index software is also possible but you need to write a mapping to move the index file in Oracle DB .
So i thought of using Oracle Text but i am not sure about how to retrieve such a document from Oracle XML DB , let me say over ftp or http ? . And if these documents are password protected -> how can Oracle Text allow this ?

[11gR2 XMLDB Developers Guide -- Full-Text Search over XML Data|http://download.oracle.com/docs/cd/E11882_01/appdev.112/e10492/xdb09sea.htm#i1006756] would be the first place to start.
For document display, there a bunch of potential solutions, you can look at [XML DB Repository|http://download.oracle.com/docs/cd/E11882_01/appdev.112/e10492/xdb03usg.htm#insertedID18], or the Text Application Developers Guide [Presenting Documents in Oracle Text|http://download.oracle.com/docs/cd/B28359_01/text.111/b28303/view.htm#i1006687] .
Password protected documents can't be indexed using the auto_filter.

Oracle iRecruitment: Keyword Search within Resumes using Oracle Text

Dear All,
As per my understanding (and Note: 247064.1) simple Keyword searches can be performed in iRecruitment if oracle Text is installed. However searching for Keywords within resumes is not possible using Oracle Text and is possible ONLY if Resume Parsing is enabled via a third party (non-oracle) service provider.
Can you please let me know if my understanding is correct and if not provide further inputs on this.
Thanks,
Subrat

Got this confirmation from Oracle via SR:
Resume searching is independent of resume parsing and not required to search resumes.
Oracle Text is the text engine that allows you to search documents using content-based queries. Oracle Text allows you to upload documents, search documents, parse resumes, etc.
Hence to conclude - Installation of Oracle Text will allow Keyword Searches on resumes.
Thanks,
Subrat

NEAR operator alternative when not using. oracle Text ?

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