Oracle Text with Numbers

Hello,
I need to search in a number column for particular "subnumbers". For
example I have a column with 3453454 in it an I like to search e.g for the
number "53" in it. I know I could use
select * from table where number_column like '%53%'
but since the table is rather big I'd like to use Oracle Text for it to avoid a full table scan and query like
select * from table where contains(number_column, '53') > 0
but above query would return NULL after converting the number column
to a varchar2 column! Only full numbers are indexed and therefore only
a search on the full number 3453454 would yield a result. What are my
options to make above query with "contains" clause work?
Thanks in advance

You can configure Text to do substring searches.
Do this:
ctx_ddl.create_preference( 'SUBSTR_SUPPORT_PREF', 'basic_wordlist' );
ctx_ddl.set_attribute( 'SUBSTR_SUPPORT_PREF', 'SUBSTRING_INDEX', 'YES' );
Then you can do something like:
where contains(col,'%53%',1) > 0
Tom Best

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Message was edited by:
Hans Forbrich
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'8265490,
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