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sql query

I have two fields in a table (lets fieldone and fieldtwo) and trying to return results that are more accurate

I am collecting the search term from the user in a $_GET['q'].

Lets say the user types in "Find how to add a form"

I want to only return results where ONE of the words exists in EACH FIELD in the table.

Example below would return rows 1. and 3. only

      FIELDONE                       FIELDTWO
1.  add insert enter             new form
2.   delete                           form
3.   adding                          the form
3.   finding                          the form

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1 Solution
Kevin CrossChief Technology OfficerCommented:
How are you currently doing this? Are you using PHP to explode the passed string to an array (list of search words) or are you passing them directly to MySQL as one string. Are you using full-text searches on the MySQL side?
debbieau1Author Commented:
At the moment, I just have an sql query that is filtered by the $_GET

I can use full text searching but I am not that familiar with it.  My understanding is that I setup the field indexes for full text search.

I am interested in using the most efficient approach, as I anticipate a lot of searches being done.

 I would welcome your advice.
Kevin CrossChief Technology OfficerCommented:
Try this out. Use DESCRIBE or EXPLAIN and see if it will perform well in your environment.

SET @find = 'Find how to add a form';

   SELECT 'add insert enter' FIELDONE, 'new form' FIELDTWO
   UNION SELECT 'delete', 'form'
   UNION SELECT 'adding', 'the form'
   UNION SELECT 'finding', 'the form'
) derived
WHERE FIELDONE REGEXP CONCAT('((', REPLACE(@find, ' ', ')|('), '))')
AND FIELDTWO REGEXP CONCAT('((', REPLACE(@find, ' ', ')|('), '))')

Open in new window

The above is a test script that will run directly as coded above in MySQL Workbench.

For the actual code, you can put this into PHP like:

$sql = "SELECT {column list}
FROM {your table name}
WHERE {column one} REGEXP CONCAT('((', REPLACE(".$find_str.", ' ', ')|('), '))')
AND {column two} REGEXP CONCAT('((', REPLACE(".$find_str.", ' ', ')|('), '))')

Open in new window

You can probably optimize this by doing the string manipulation on the PHP side, but this was what popped into my head. What I am doing is taking your string and converting it to a regular expression like: '((word1)|(word2)|(word3))' so basically I made each word a matching group. The key to ensuring both fields match is the AND logical operator.
debbieau1Author Commented:
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