php - Two-part MySQL question: Accessing specific MySQL row, and column performance -

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i have table 150 websites listed in columns "site_name", "visible_name" (basically formatted name), , "description." given page on site, want pull site_name , visible_name every site in table, , want pull 3 columns selected site, comes $_get array (a url parameter).

right i'm using 2 queries this, 1 says "get site_name , visible_name sites" , says "get 3 fields 1 specific site." i'm guess better way is:

select * site_list;

thus reducing 1 query, , doing rest post-query, brings 2 questions:

  1. the "description" field each site 200-300 characters. bad performance standpoint pull 150 sites if i'm using 1 site?
  2. how reference specific row mysql result set site specificed in url? example, if url "mysite.com/results?site_name=foo" how do post-query equivalent of select * site_list site_name=foo; ?

i don't know how data "site_name=foo" without looping through entire result array , checking see if site_name matches url parameter. isn't there more efficient way it?

thanks,

chris

ps: noticed similar question on stackoverflow , read through answers didn't in situation, why i'm posting this.

thanks,

chris

i believe now, keeping sperated queries getting list of sites titles , 1 detailed view description single given site, good. don't pull unneeded data , both queries being simple fast.

it possible combine both queries one, using left join, maybe like:

select s1.site_name, s1.visible_name, s2.description site_list s1 left join   ( select site_name, description   site_list   site_name = 'this site should go description' ) s2 on s2.site_name = s1.site_name

resulting in sites without matching name having null description, sort using 

order description desc, site_name

to site description first fetched row, eliminating need iterate through results find it, mysql have lot more work give result, negating possible gain hope for. stick have now, good.


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