MySQL - How to ORDER BY RELEVANCE? INNODB Table

mysql search sql-order-by innodb relevance

19,732

version 1:

SELECT max(id) id, name
  FROM cards
 WHERE name like '%John%'
 GROUP BY name
 ORDER BY CASE WHEN name like 'John %' THEN 0
               WHEN name like 'John%' THEN 1
               WHEN name like '% John%' THEN 2
               ELSE 3
          END, name

version 2:

SELECT max(id) id, name
  FROM cards
 WHERE name like '%John%'
 GROUP BY name
 ORDER BY CASE WHEN name like 'John%' THEN 0
               WHEN name like '% %John% %' THEN 1
               WHEN name like '%John' THEN 2
               ELSE 3
          END, name

19,732

Author by

k00k

Updated on June 03, 2022

Comments

k00k almost 2 years

I've got about 20,000 rows in an INNODB table called 'cards', so FULLTEXT is not an option.

Please consider this table:

id     |     name     |     description
----------------------------------------------------------
1        John Smith       Just some dude
2        Ted Johnson      Another dude
3        Johnathan Todd   This guy too
4        Susan Smith      Her too
5        Sam John Bond    And him
6        John Smith       Same guy as num 1, another record
7        John Adams       Last guy, promise

So, say the user searches for 'John', I want the result set to be in the order of:

7        John Adams
6        John Smith
3        Johnathan Todd
5        Sam John Bond
2        Ted Johnson

Please note that we've only pulled 'John Smith' once, we took his most recent entry. Due to my data, all names are for the same exact person, no need to worry about 2 different guys named John Smith. Ideas? Let me know if I can clarify anything.

k00k over 14 years

Awesome! That works exactly like I wanted it to. Thanks najmeddine!
manji over 14 years

glad to help. I modified it a little bit to handle more cases.
k00k over 14 years

I think the other way works better in my specific case, but they both may be helpful to others, can you put both up there for posterity's sake?
Rafael Herscovici over 12 years

anyone know how can i do this with parametized values ?
worenga about 12 years

You'll need to carry the % into the Parameters
Xunnamius about 11 years

+1 beautiful quasi-solution to Innodb's lack of natural language search in the old version of mysql I'm stuck in.
Joe Jankowiak over 7 years

Could you put what the difference between the two versions is? I tried both and while they work, they return the same results for me.