mysql> explain SELECT p.id ID, p.job_desc_title Title, p.url URL, substr(p.posting_date, 1, 10) Date,
-> p.job_city_name City,
-> p.job_state_name State,
-> b.screen_name Name, b.type Type,f.name Company,IF(g.account_id IS NULL,0,1) Online
-> FROM postings p
-> LEFT JOIN accounts b on p.account_id=b.id
-> LEFT JOIN companies f on f.id=p.job_cmp_id
-> LEFT JOIN online g ON g.account_id=p.account_id
-> WHERE (MATCH(job_desc,job_desc_title,k_state,k_city,zip) AGAINST('+java' IN BOOLEAN MODE)) AND b.closed=0 AND NOT p.expired
->
-> LIMIT 0 , 5
-> ;
+----+-------------+-------+----------+--------------------------------------------------+--------------------------------------+---------+-----------------+------+-------------+
| id | select_type | table | type | possible_keys | key | key_len | ref | rows | Extra |
+----+-------------+-------+----------+--------------------------------------------------+--------------------------------------+---------+-----------------+------+-------------+
| 1 | SIMPLE | p | fulltext | FK_listings,f_postings_city_state_desc_title_zip | f_postings_city_state_desc_title_zip | 0 | | 1 | Using where |
| 1 | SIMPLE | f | eq_ref | PRIMARY | PRIMARY | 4 | v3.p.job_cmp_id | 1 | |
| 1 | SIMPLE | g | eq_ref | account_id | account_id | 4 | v3.p.account_id | 1 | Using index |
| 1 | SIMPLE | b | eq_ref | PRIMARY | PRIMARY | 4 | v3.p.account_id | 1 | Using where |
+----+-------------+-------+----------+--------------------------------------------------+--------------------------------------+---------+-----------------+------+-------------+
4 rows in set (0.00 sec)
Il était utilisé pour commander par pertinence, mais il ne semble pas l'être maintenant.Quelle est l'ordre par défaut pour cette requête dans MYSQL?
L'ordre de tri par défaut est comme une boîte de chocolats. – TheTXI