create table stuff
( id int auto_increment primary key,
seo varchar(100) not null
-- unique key (seo) not a bad idea
);
insert stuff (seo) values ('abc'),('abc7'),('kitty likes abc'),('abc and more abc'),('kittens');
insert stuff (seo) values ('abc at beginning'),('frogs'),('and at the end abc'),('qwertyabcqwerty');
select id from stuff where seo='abc';
+----+
| id |
+----+
| 1 |
+----+
1 row in set (0.02 sec)
Ecco come like si comporta:
select * from stuff where seo like '%abc';
+----+--------------------+
| id | seo |
+----+--------------------+
| 1 | abc |
| 3 | kitty likes abc |
| 4 | abc and more abc |
| 8 | and at the end abc |
+----+--------------------+
4 rows in set (0.00 sec)
select * from stuff where seo like 'abc%';
+----+------------------+
| id | seo |
+----+------------------+
| 1 | abc |
| 2 | abc7 |
| 4 | abc and more abc |
| 6 | abc at beginning |
+----+------------------+
4 rows in set (0.00 sec)
select id,seo from stuff where seo like '%abc%';
+----+--------------------+
| id | seo |
+----+--------------------+
| 1 | abc |
| 2 | abc7 |
| 3 | kitty likes abc |
| 4 | abc and more abc |
| 6 | abc at beginning |
| 8 | and at the end abc |
| 9 | qwertyabcqwerty |
+----+--------------------+
7 rows in set (0.00 sec)
