Using SOUNDEX to match individual words within Text fields

Posted on 2007-04-10
Medium Priority
Last Modified: 2008-01-09
I have a table which contains  a Text fields containing course information.

I am constructing a 'fuzzy search' stored procedure which will match words within this field based on what was entered into a web front end.

The part I am finding difficulty with is matching on mis-spelled words

I thought I could use SOUNDEX for this but it only appears to be finding matches where the first word of the Text field is the word I am looking for.

So, for example, my search value is 'compter course' (note it is mis-spelled)

There are records in my DB which have text field value of 'Computers for beginners' and 'An introduction to computers'

My SOUNDEX query partly does the job but only the first record is matched :(

Is there a way to use SOUNDEX across all words in the text field or is ther another approach I can look at?

I am using SQL 2005

Question by:WNottsC
LVL 11

Expert Comment

by:Ved Prakash Agrawal
ID: 18881525

just try to look this may help you.. not sure it wil solve your problem or not..
I am looking your problem and give the feedback very soon...

LVL 143

Assisted Solution

by:Guy Hengel [angelIII / a3]
Guy Hengel [angelIII / a3] earned 600 total points
ID: 18881529
you cannot use soundex efficiently for this.
you might consider using full-text search for this kind of query.
look up
in the books online.
LVL 23

Expert Comment

ID: 18881547
<<you cannot use soundex efficiently for this.>>
Agreed.  I would also ask: why use soundex at all.
Build your data science skills into a career

Are you ready to take your data science career to the next step, or break into data science? With Springboard’s Data Science Career Track, you’ll master data science topics, have personalized career guidance, weekly calls with a data science expert, and a job guarantee.

LVL 50

Accepted Solution

Lowfatspread earned 900 total points
ID: 18881639
you can use soundex for some limited "misspelled word"  problems but i agree with angelliii and racimo its usage will not be easy ...

you need to filter for noise words and build soundex values for each remaining word and compare those...

full text searching is probably a better solution these days...

however your problem really seems  to stem from allowing a free format input in the firstplace... if your are really trying to allow for searching a course catalogue
why is a simple cross reference / category selection not the simplest approach...

ie type the course to an agreed set of course key words   COMPUTING / BASIC / PROGRAMMING / THEORY / ....

then just let the userr select from the defined set of Keywords...


Author Comment

ID: 18881815

My SP uses all the other methods mentioned above already, none of them produce a match on 'compting' except soundex.  I already do some tidying up of noise words etc as well, the SP is growing into a bit of a monster.

I agree the design of the DB & application is not perfect but its what I've been given to work with

Author Comment

ID: 18896180

Fortunately the data used here is only refreshed every few weeks so Ive created an overnight which splits the words in the search field into separate fields in a new table, then a soundex match is performed on each field in turn.

Hopefully this will catch enough typos to let us escape creating a thesaurus which I really, really want to avoid

Featured Post

Keep up with what's happening at Experts Exchange!

Sign up to receive Decoded, a new monthly digest with product updates, feature release info, continuing education opportunities, and more.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

What if you have to shut down the entire Citrix infrastructure for hardware maintenance, software upgrades or "the unknown"? I developed this plan for "the unknown" and hope that it helps you as well. This article explains how to properly shut down …
This month, Experts Exchange sat down with resident SQL expert, Jim Horn, for an in-depth look into the makings of a successful career in SQL.
Via a live example, show how to extract information from SQL Server on Database, Connection and Server properties
Via a live example, show how to backup a database, simulate a failure backup the tail of the database transaction log and perform the restore.

627 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