MysqL：对多列进行全文搜索，100％匹配

Question

I'd like to do a fulltext search over multiple columns in a MySQL database, only using 1 Input field to search for addresses.

So far my code works but I also get rows returned where not all search words are present.

SELECT *, ((1.3 * (MATCH (city) AGAINST ('+$search*' IN BOOLEAN MODE)))
+ (0.6 * (MATCH (name, zip, str) AGAINST ('+$search*' IN BOOLEAN MODE)))) AS relevance
FROM service
WHERE (MATCH (name, city, zip, str) AGAINST ('+$search*' IN BOOLEAN MODE)) 
HAVING relevance > 0 ORDER BY relevance DESC LIMIT 10

This could return sth like:

$search = "Anderson City ZIP"

1. Anderson, City, ZIP, street x
2. Anderson, City, ZIP, street y
3. Smith, City, ZIP, street x

So line 3 is wrong because it does not contain Anderson but Smith .

I already tried to add the + operator in the $search string ( Anderson City ZIP --> +Anderson +City +ZIP ) but then the result often does not show anything.

Is it possible to return only rows with 100 % match?

Answer 1

The plus sign is the good thing to do but you have to be sure that one of the strings you are searching for is not in more than 50% of the rows of your table.

Also consider using quotes to match the full expression: +"Anderson City ZIP"