regex - MYSQL REGEXP query for keywords column -


i need regular expression users have keyword 52 , users have keyword 52,53 not 54. below table structure

create table `user` (   `id` int not null auto_increment,   `first_name` varchar(100) not null,   `last_name` varchar(100) not null,   `keywords` text,   primary key (`id`) ) engine=innodb default charset=utf8;  sample record1:  100, sam, thompson, "50,51,52,53,54" sample record2:  100, wan, thompson, "50,52,53" sample record3:  100, kan, thompson, "53,52,50,54"  50 = sports 51 = cricket 52 = soccer 53 = baseball 54 = tennis

so far query have come with. gives records 3.

select * `user` keywords regexp '[[:<:]]52,53,54[[:>:]]'

try using find_in_set() rather complex regular expression:

select u.* user text = '52' or     (find_in_set('52', text) > 0 , find_in_set('53', text) > 0 ,      find_in_set('54', text) = 0)

explanation:

where text = '52' -- users have keyword 52 , keyword find_in_set('52', text) > 0 , find_in_set('53', text) > 0 ,      find_in_set('54', text) = 0                   -- users have keywords 52 , 53 not 54

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