Question

I’m building a tag cloud and since it’s for a large site I’m saving the counts in a table to avoid counting everything with each request, here it is:

CREATE TABLE `counts` (
  `name` CHAR(35) NOT NULL DEFAULT '',
  `total` INT(11) NOT NULL,
  `type` tinyint(4) NOT NULL,
  `locale_id` SMALLINT(6) NOT NULL,
  PRIMARY KEY (`name`,`type`,`locale_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;


INSERT INTO `counts` (`name`, `total`, `type`, `locale_id`)
VALUES
    ('k3k3k',888,3,1),
    ('krkrkrkr',333,3,1),
    ('zzxzx',22,3,1);

name is the tag word and total is how many times it is mentioned in the tag table. I need to get the percentage of every tag to build the tag cloud.

How can I do that?

Answer 1

   select 
     name, 
     total,
     total/(select sum(total) from counts)*100 as percentage
   from counts