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MySQL SELECT LIKE or REGEXP to match multiple words in one record

Posted by: admin November 1, 2017 Leave a comment

Questions:

The field table.name contains ‘Stylus Photo 2100’ and with the following query

SELECT `name` FROM `table` WHERE `name` LIKE '%Stylus 2100%'

I get no results. Of course i would if i searched

SELECT `name` FROM `table` WHERE `name` LIKE '%Photo 2100%'

How can I select the record by searching ‘Stylus 2100’ ?

Thanks

Answers:

Well if you know the order of your words.. you can use:

SELECT `name` FROM `table` WHERE `name` REGEXP 'Stylus.+2100'

Also you can use:

SELECT `name` FROM `table` WHERE `name` LIKE '%Stylus%' AND `name` LIKE '%2100%'

Questions:
Answers:

I think that the best solution would be to use Regular expressions. It’s cleanest and probably the most effective. Regular Expressions are supported in all commonly used DB engines.

In MySql there is RLIKE operator so your query would be something like:
SELECT * FROM buckets WHERE bucketname RLIKE 'Stylus|2100'
I’m not very strong in regexp so I hope the expression is ok.

Edit
The RegExp should rather be:

SELECT * FROM buckets WHERE bucketname RLIKE '(?=.*Stylus)(?=.*2100)'

More on MySql regexp support:
http://dev.mysql.com/doc/refman/5.1/en/regexp.html#operator_regexp

Questions:
Answers:

You can just replace each space with %

SELECT `name` FROM `table` WHERE `name` LIKE '%Stylus%2100%'

Questions:
Answers:

have a look on http://www.techonthenet.com/sql/like.php

with LIKE ‘%Stylus 2100%’ you ask a string containing exactly ‘Stylus 2100’, and ‘Stylus Photo 2100’ do not contain that string, there’s ‘Photo’ inside;

Questions:
Answers:

The correct solution is a FullText Search (if you can use it) https://dev.mysql.com/doc/refman/5.1/en/fulltext-search.html

This nearly does what you want:

SELECT * FROM buckets WHERE bucketname RLIKE '(Stylus|2100)+.*(Stylus|2100)+';

SELECT * FROM buckets WHERE bucketname RLIKE '(Stylus|2100|photo)+.*(Stylus|2100|photo)+.*(Stylus|2100|photo)+.*';

But this will also match “210021002100” which is not great.