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Mysql GROUP BY and COUNT for multiple WHERE clauses

Simplified table structure:

CREATE TABLE IF NOT EXISTS `hpa` (
  `id` bigint(15) NOT NULL auto_increment,
  `core` varchar(50) NOT NULL,
  `hostname` varchar(50) NOT NULL,
  `status` varchar(255) NOT NULL,
  `entered_date` int(11) NOT NULL,
  `active_date` int(11) NOT NULL,
  PRIMARY KEY  (`id`),
  KEY `hostname` (`hostname`),
  KEY `status` (`status`),
  KEY `entered_date` (`entered_date`),
  KEY `core` (`core`),
  KEY `active_date` (`active_date`)
)

To do this, I have the following SQL query, which simply summarizes all records with a specific status.

SELECT core,COUNT(hostname) AS hostname_count, MAX(active_date) AS last_active
          FROM `hpa`
          WHERE 
          status != 'OK' AND status != 'Repaired'
          GROUP BY core
          ORDER BY core

This query has been simplified to remove INNER JOINS for unrelated data and additional columns that should not affect the question.

MAX (active_date) is the same for all records of a certain day and should always choose the last day or allow an offset from NOW (). (this is a UNIXTIME field)

I need as an account: (status! = 'OK' And status! = 'Refurbished')

And the opposite ... count: (status = 'OK' OR status = 'Refurbished')

And the first answer is divided into the second, for 'percent_dead' (maybe as fast as in post-processing)

During the last day or shift (- 86400 for yesterday, etc.)

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EDIT: SQL- .

EDIT: , (, ). -, . ORDER BY:

SELECT h1.core, MAX(h1.entered_date) AS last_active, 
SUM(CASE WHEN h1.status IN ('OK', 'Repaired') THEN 1 ELSE 0 END) AS good_host_count,  
SUM(CASE WHEN h1.status IN ('OK', 'Repaired') THEN 0 ELSE 1 END) AS bad_host_count 
FROM `hpa` h1 
LEFT OUTER JOIN `hpa` h2 ON (h1.hostname = h2.hostname AND h1.active_date < h2.active_date) 
WHERE h2.hostname IS NULL 
GROUP BY h1.core 
ORDER BY ( bad_host_count / ( bad_host_count + good_host_count ) ) DESC,h1.core

:   # 1247 - 'bad_host_count' ( )

EDIT: . ORDER BY percentage_dead

SELECT c.core, c.last_active, 
SUM(CASE WHEN d.dead = 1 THEN 0 ELSE 1 END) AS good_host_count,  
SUM(CASE WHEN d.dead = 1 THEN 1 ELSE 0 END) AS bad_host_count,
( SUM(CASE WHEN d.dead = 1 THEN 1 ELSE 0 END) * 100/
( (SUM(CASE WHEN d.dead = 1 THEN 0 ELSE 1 END) )+(SUM(CASE WHEN d.dead = 1 THEN 1 ELSE 0 END) ) ) ) AS percentage_dead
FROM `agent_cores` c 
LEFT JOIN `dead_agents` d ON c.core = d.core
WHERE d.active = 1
GROUP BY c.core
ORDER BY percentage_dead
+5
1

, OK, OK hostnames, . ? .

SELECT core, MAX(active_date)
  SUM(CASE WHEN status IN ('OK', 'Repaired') THEN 1 ELSE 0 END) AS OK_host_count,
  SUM(CASE WHEN status IN ('OK', 'Repaired') THEN 0 ELSE 1 END) AS broken_host_count
FROM `hpa` h1 LEFT OUTER JOIN `hpa` h2 
  ON (h1.hostname = h2.hostname AND h1.active_date < h2.active_date)
WHERE h2.hostname IS NULL
GROUP BY core
ORDER BY core;

" n--", SQL StackOverflow.

, , active_date. , .

.

( active_date). N , .

SELECT core, MAX(active_date)
  SUM(CASE WHEN status IN ('OK', 'Repaired') THEN 1 ELSE 0 END) AS OK_host_count,
  SUM(CASE WHEN status IN ('OK', 'Repaired') THEN 0 ELSE 1 END) AS broken_host_count
FROM `hpa` h1 LEFT OUTER JOIN `hpa` h2 
  ON (h1.hostname = h2.hostname AND h1.active_date < h2.active_date
  AND h2.active_date <= CURDATE() - INTERVAL 1 DAY)
WHERE h1.active_date <= CURDATE() - INTERVAL 1 DAY AND h2.hostname IS NULL
GROUP BY core
ORDER BY core;

OK , PHP-. SQL , , .

, , UNIX. - :

SELECT core, MAX(active_date)
  SUM(CASE WHEN status IN ('OK', 'Repaired') THEN 1 ELSE 0 END) AS OK_host_count,
  SUM(CASE WHEN status IN ('OK', 'Repaired') THEN 0 ELSE 1 END) AS broken_host_count
FROM `hpa` h1 LEFT OUTER JOIN `hpa` h2 
  ON (h1.hostname = h2.hostname AND h1.active_date < h2.active_date
  AND h2.active_date <= UNIX_TIMESTAMP() - 86400)
WHERE h1.active_date <= UNIX_TIMESTAMP() - 86400 AND h2.hostname IS NULL
GROUP BY core
ORDER BY core;
+3

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