Big problem with Oracle Text
Hi allI use the Oracle text to perform a full text search. I have my column indexed like that
CREATE INDEX cm_property_text ON cm_property (text_value) INDEXTYPES IS CTXSYS. FRAMEWORK
After that, I inserted a line in the text_value field have contain is: "I and you or other ', then run the synchronous command my index finger:
Begin
CTXSYS. CTX_DLL. SYNC_INDEX ('cm_property_text');
end;
Then I run the query to select out have the text_value line contains text value is "I and you".
SELECT * FROM cm_property WHERE CONTAINS (text_value,' I / you "")
But I got nothing. And I tried to change like this looking for text entry
SELECT * FROM cm_property WHERE CONTAINS (text_value, ' I/you and/or other "" ");
And I had a line that is the line that I inserted before.
I have really no why? Who can help me to explain about this?
Thank you very much!
If you want to be able to search for empty words by default, you can use an empty stopwords list or which does not contain the words you want to search. For a single character escape, preface with-not. To escape a whole word or phrase, such as a keyword or reserved word, surround it with {}. Please see the demo below.
SCOTT@orcl_11gR2> CREATE TABLE cm_property
2 (text_value VARCHAR2 (60))
3 /
Table created.
SCOTT@orcl_11gR2> CREATE INDEX cm_property_text
2 ON cm_property (text_value)
3 INDEXTYPE IS CTXSYS.CONTEXT
4 PARAMETERS ('STOPLIST CTXSYS.EMPTY_STOPLIST')
5 /
Index created.
SCOTT@orcl_11gR2> INSERT INTO cm_property (text_value)
2 VALUES ('I and you or other')
3 /
1 row created.
SCOTT@orcl_11gR2> Begin
2 CTXSYS.CTX_DDL.SYNC_INDEX ('cm_property_text');
3 end;
4 /
PL/SQL procedure successfully completed.
SCOTT@orcl_11gR2> SELECT token_text FROM dr$cm_property_text$i
2 /
TOKEN_TEXT
----------------------------------------------------------------
AND
I
OR
OTHER
YOU
5 rows selected.
SCOTT@orcl_11gR2> SELECT * FROM cm_property
2 WHERE CONTAINS (text_value, 'I {and} you') > 0
3 /
TEXT_VALUE
------------------------------------------------------------
I and you or other
1 row selected.
SCOTT@orcl_11gR2> SELECT * FROM cm_property
2 WHERE CONTAINS (text_value, 'I {and} you {or} other') > 0
3 /
TEXT_VALUE
------------------------------------------------------------
I and you or other
1 row selected.
SCOTT@orcl_11gR2>
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NKMYou could start trying to impose (with extensive predicates) what you discover or believe work better.
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