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POConcatenation result from MySQL query, using group and multiple tables
 

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  1. POConcatenation result from MySQL query, using group and multiple tables
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    <p>I have some problem with MySQL query.</p> <p>I have 5 tables (keys in brackets):</p> <pre><code>trips (tripId) trips_moments (tripId, momentId) moments (momentId) moments_images (momentIs, imageId) images (imageId) </code></pre> <p>In my situation I have 1 trip, which contains 2 moments, every moment contains 5 images.</p> <p>I'd like in result to get in field "moments":</p> <pre><code>166;Kościuszko mound in Cracow;2012-11-08 15:38:14;6;F50MTTZK;jpg;6R2XJB9X| 167;Pope John Paul II (Jan Paweł 2) home town - Wadowice;2012-11-08 15:57:15;19;66B7VQ84;jpg;ILQYDQUC </code></pre> <p>instead of:</p> <pre><code>166;Kościuszko mound in Cracow;2012-11-08 15:38:14;6;F50MTTZK;jpg;6R2XJB9X| 166;Kościuszko mound in Cracow;2012-11-08 15:38:14;7;9PY1BZD1;jpg;TP7U07ST| 166;Kościuszko mound in Cracow;2012-11-08 15:38:14;8;VPGPFMMS;jpg;VF95BNNQ| 166;Kościuszko mound in Cracow;2012-11-08 15:38:14;9;EC7NL3HC;jpg;PD1CEQE6| 166;Kościuszko mound in Cracow;2012-11-08 15:38:14;10;8J1OT7IT;jpg;ZL8WAWCJ| 167;Pope John Paul II (Jan Paweł 2) home town - Wadowice;2012-11-08 15:57:15;19;66B7VQ84;jpg;ILQYDQUC| 167;Pope John Paul II (Jan Paweł 2) home town - Wadowice;2012-11-08 15:57:15;20;HZIPGJY7;jpg;FOOWJ8BV| 167;Pope John Paul II (Jan Paweł 2) home town - Wadowice;2012-11-08 15:57:15;21;9JOXXPJQ;jpg;ZIVJ5V7K| 167;Pope John Paul II (Jan Paweł 2) home town - Wadowice;2012-11-08 15:57:15;22;IS1JPW1N;jpg;31M4XVBM| 167;Pope John Paul II (Jan Paweł 2) home town - Wadowice;2012-11-08 15:57:15;23;OTOWNDZA;jpg;C03UFMBK </code></pre> <p>You can see in my result that record with 166 and 167 is repeated as many times as much images moment contains.</p> <p>My current query:</p> <pre><code> SELECT `t`.`tripId`, `t`.`title`, `t`.`when`, GROUP_CONCAT( DISTINCT( CONCAT( m.momentId, ';', m.title, ';', m.created, ';', i.imageId, ';', i.fileNameBase, ';', i.fileNameExtension, ';', i.directory) ) SEPARATOR '|' ) AS `moments` FROM `trips` AS `t` LEFT JOIN `trips_moments` AS `tm` ON t.tripId = tm.tripId LEFT JOIN `moments` AS `m` ON tm.momentId = m.momentId LEFT JOIN `moments_images` AS `mi` ON m.momentId = mi.momentId LEFT JOIN `images` AS `i` ON mi.imageId = i.imageId WHERE (t.userId = '1') GROUP BY `t`.`tripId` ORDER BY `t`.`tripId` ASC </code></pre> <p>Current table structures:</p> <pre><code>CREATE TABLE IF NOT EXISTS `images` ( `imageId` int(11) NOT NULL AUTO_INCREMENT, `userId` int(11) NOT NULL, `title` varchar(128) NOT NULL, `description` text NOT NULL, `fileNameBase` varchar(64) NOT NULL, `fileNameExtension` varchar(4) NOT NULL, `directory` varchar(64) NOT NULL, `source` varchar(32) NOT NULL, `created` datetime NOT NULL, PRIMARY KEY (`imageId`) ) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=1 ; CREATE TABLE IF NOT EXISTS `moments` ( `momentId` int(11) NOT NULL AUTO_INCREMENT, `title` varchar(128) NOT NULL, `userId` int(11) NOT NULL, `created` datetime NOT NULL, PRIMARY KEY (`momentId`) ) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=1 ; CREATE TABLE IF NOT EXISTS `moments_images` ( `momentId` int(11) NOT NULL, `imageId` int(11) NOT NULL, PRIMARY KEY (`momentId`,`imageId`) ) ENGINE=MyISAM DEFAULT CHARSET=utf8; CREATE TABLE IF NOT EXISTS `trips` ( `tripId` int(11) NOT NULL AUTO_INCREMENT, `userId` int(11) NOT NULL, `title` varchar(128) NOT NULL, `when` date NOT NULL, `created` datetime NOT NULL, PRIMARY KEY (`tripId`) ) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=1 ; CREATE TABLE IF NOT EXISTS `trips_moments` ( `tripId` int(11) NOT NULL, `momentId` int(11) NOT NULL, PRIMARY KEY (`tripId`,`momentId`) ) ENGINE=MyISAM DEFAULT CHARSET=utf8; </code></pre>
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    1. PTQuestion
    1. USekad
    1. USsanneo
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    1. CObuy you have multiple imagees for each moment? you can't get your expected output. Doesn't all these 3 filename bases attached to 166: F50MTTZK, VPGPFMMS, 8J1OT7IT.
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      1. POConcatenation result from MySQL query, using group and multiple tables
      1. USNesim Razon
    2. COThe result is correct, there are 5 images per moment. If you want to pick only one image, on which conditions should mysql pick a single image? the newest? the oldest? random?
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      1. POConcatenation result from MySQL query, using group and multiple tables
      1. USKaii
    3. CO@Kaii, I'd like to get the first image from rowset, if there is possibility to order them by name, or date, it would be perfect
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      1. USsanneo
 

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