how to decrease queries in php/mysql array selection loop

i need to show stories details and tags' names in my php/mysql project .

for every story row, there is a filed named : tags that save tags id as an array

Table name: stories

table filed : tags

example of tags filed :

1 5 6 space between them

and i have a tag table that looks like this

Table name : bt_tags

Table fileds : tid,tag

now problem :

when using while loop to fetch all fields in story table , the page uses 1 query to show every stories' detail but for showing tag's names , i should query another table to find names , we have ids stored in story table

now i used for loop between while开发者_如何学Python loop to show tag names but im sure there is a better way to decrease page queries

llowed to change anything in database table

how can i improve this script and show tag's names without using **for loop ?**

SELECT stories.storyid,
       stories.storyname, 
       group_concat( tags.tagname ) 
  FROM stories, tags
 WHERE CONCAT( ' ', stories.tags, ' ' ) LIKE CONCAT( '%', tags.tagid, '%' ) 
 GROUP BY stories.storyid, stories.storyname

Sounds like a join may help you

select s.*,
  b.tag,
  b.slug
from story_table s
  left join bt_tags b on b.tid in s.tags

Join Syntax at dev.mysql.com