MySQL: İki tablo tarihi, rastgele bir satır seçmek

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Öncelikle, ne ben ve ne ben oluşturmak için çalışılıyor açıklamak için, bir ekran döküm oluşturdu. Anlamak çok daha kolay.

Burada ekran döküm bakın: http://www.youtube.com/v/lZf3S3EGHDw?fs=1&hl=en_US&rel=0&hd=1

Tablolar:

CREATE TABLE `locations` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `title` varchar(45) DEFAULT NULL,
  `latitude` decimal(10,6) DEFAULT NULL,
  `longitude` decimal(10,6) DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;

INSERT INTO `locations` (`id`,`title`,`latitude`,`longitude`)
VALUES
    (1,'Randall Automotive Car Repair',42.729642,-84.515524),
    (2,'Belle Tire',42.662458,-84.538177),
    (3,'Better Buy Muffler & Breaks',42.740845,-84.589541),
    (4,'Kwik Car Wash',42.721221,-84.545926);


CREATE TABLE `listings` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `token` varchar(4) DEFAULT NULL,
  `location` varchar(45) DEFAULT NULL,
  `info` varchar(70) DEFAULT NULL,
  `status` varchar(45) DEFAULT NULL,
  `auto_inactive` varchar(10) DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;


INSERT INTO `listings` (`id`,`token`,`location`,`info`,`status`,`auto_inactive`)
VALUES
    (35,'4uaJ','1','All employees are NSA certified.','active','0'),
    (36,'RdcX','1','Family Owned and Operated','active','0'),
    (37,'WuaZ','1','Also repair Small engines','active','0'),
    (38,'2jxD','2','Open on the weekends.','active','0'),
    (39,'Xsu4','2','Two locations in this town.','active','0'),
    (40,'p9cB','2','Advertise on Tiger\'s Baseball','active','0'),
    (41,'mYa3','2','Started right here in Michigan','active','0'),
    (42,'Q8g5','3','Building built in 1997','active','0'),
    (43,'l734','3','Great ratings from BBB','active','0'),
    (44,'7cLY','4','Open in the Winter','active','0'),
    (45,'gtlU','4','Largest car wash in town','active','0'),
    (46,'fEjK','4','Owned and Operated by John Smith','active','1285614174'),
    (47,'dRcu','4','Opened in 1987','inactive','0');



<?php

include_once('include.php'); // Calls the Mysql Database`
ini_set('date.timezone', 'America/Detroit');


$user_latitude = 42.7160084;
$user_longitude = -84.5615018;


$sql =  mysqli_query($mysqli, "SELECT 
                                        loc.id, 
                                        loc.title, 
                                        ( 3959 * acos( cos( radians('".$user_latitude."') ) * cos( radians( latitude ) ) * cos( radians( longitude ) - radians('".$user_longitude."') ) + sin( radians('".$user_latitude."') ) * sin( radians( latitude ) ) ) ) AS distance

                                FROM 
                                        locations loc 

                                WHERE EXISTS(SELECT NULL FROM listings li
                                        WHERE li.location = loc.id 
                                        AND li.status = 'active' 
                                        AND (li.auto_inactive > '".time()."' OR li.auto_inactive = '0')) 

                                ORDER BY distance");


while($locations = mysqli_fetch_array($sql)) {

        $listings = mysqli_fetch_array(mysqli_query($mysqli, "SELECT listings.token, listings.info FROM listings WHERE (listings.location = '".$locations['id']."') AND listings.status = 'active' AND (listings.auto_inactive > '".time()."' OR listings.auto_inactive = '0') ORDER BY RAND()"));


        echo '<a href="listing.php?id='.$listings['token'].'"><h2>'.$locations['title'].'</h2></a>';

        echo '<h5>Distance: '.sprintf ('%.2f', $locations['distance']).' mi</h5>';
        echo '<p>'.$listings['info'].'</p>';
        echo '<hr/>';
}

?>

Eğer açıklık şeye ihtiyacınız olursa lütfen bana bildirin. Teşekkür ederiz!

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