CODEWITHSUNDEEP
mysqlfull-text-search
Eric B
Eric B

Reputation: 121

MySQL Fulltext search against column value?

I need to do a Fulltext search for a whole bunch of values out of a column in another table. Since MATCH() requires a value in the AGAINST() part, a straightforward: "SELECT a.id FROM a,b WHERE MATCH(b.content) AGAINST(a.name)" fails with "Incorrect arguments to AGAINST".

Now, I know I could write a script to query for a list of names and then search for them, but I'd much rather work out a more complex query that can handle it all at once. It doesn't need to be speedy, either.

Ideas?

thanks

Upvotes: 12

Views: 6575

Answers (2)

Cantalupe
Cantalupe

Reputation: 1

I hope my solution will be useful to you:

PREPARE stat FROM 'SELECT user_profession FROM users INNER JOIN professions ON MATCH(user_profession) AGAINST (?)';
SET @c_val = (SELECT prfs_profession FROM professions WHERE prfs_ID=1);
EXECUTE stat USING @c_val;

Upvotes: 0

Bill Karwin
Bill Karwin

Reputation: 562891

Unfortunately, http://dev.mysql.com/doc/refman/5.6/en/fulltext-search.html says:

The search string must be a string value that is constant during query evaluation. This rules out, for example, a table column because that can differ for each row.

Looks like you'll have to search for the patterns one at a time if you use MySQL's FULLTEXT index as your search solution.

The only alternative I can think of to allow searching for many patterns like you describe is an Inverted Index. Though this isn't as flexible or scalable as a true full-text search technology.

See my presentation http://www.slideshare.net/billkarwin/practical-full-text-search-with-my-sql

Upvotes: 5

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