Any disadvantages to this tagging approach

Posted by donpal on Stack Overflow See other posts from Stack Overflow or by donpal
Published on 2010-05-25T02:05:43Z Indexed on 2010/05/25 2:11 UTC
Read the original article Hit count: 300

Filed under:

php

|

mysql

|

database

|

mysql-query

|

tags

I have a table of tags

ID      tag
---     ------
1       tagt
2       tagb
3       tagz
4       tagn

In my items table, I'm using those tags in serialized format, comma delimited

ID       field1       tags
----     ------       -----
1        value1       tagt,tagb
2        value2       tagb
3        value3       tagb,tagn
4        value4

When I need to find items that have this tag, I plan to deserialize the tags. But I'm not actually sure how to do it, and if it's better to have a third table for associations instead between the tags and the items.

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