I want to use like key words in mysql

I am using mysql db and and i have a table called INFO it has a column INFO_NUMBER and INFO_SUBJECT and it contains string as

+--------------+-------------------------+
| INFO_NUMBER | INFO_SUBJECT           |
+--------------+-------------------------+
| A3L1         | updated                 |
| A3L2         | updated updated         |
开发者_运维知识库| A3L3         | updated updated updated |
+--------------+-------------------------+

and now i want to fetch only those record whose INFO_SUBJECT contains maximum of updated string through like keyword and i don't know how many times updated string should be appended

this is becoz of searching and my requirement is same.

my query is : SELECT INFO_NUMBER,INFO_SUBJECT FROM INFO WHERE INFO_SUBJECT LIKE "UP%"; but it returns all the records.

Thanks

I doubt if this can be done with a single query (even if possible, there might be performance implications). But this might help Mysql count number of regex match per field

Based on your data this will work:

SELECT * FROM INFO where length(INFO_SUBJECT) in (select max(length(INFO_SUBJECT)) from INFO);

More time updated word is in string more its length.

SELECT * 
FROM  INFO 
WHERE INFO_SUBJECT LIKE 'up%' 
AND length(INFO_SUBJECT) IN (SELECT MAX(length(INFO_SUBJECT)) FROM INFO);

Credit goes to Harry Joy. He has already has answered your question. Small string I added with your permission Harry.