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POAlways return 1 even when there is no table related object
 

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  1. POAlways return 1 even when there is no table related object
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    <p>I query my database for a table with joined related table Example: I want to show all styles and join mixes with that style but show 0 mixes if thst style don't have mixes related.</p> <p>Here is my 2 tables:</p> <h3>First The Mixes table</h3> <pre><code>CREATE TABLE `mixes` ( `mixes_id` int(11) NOT NULL AUTO_INCREMENT, `datePublic` date DEFAULT NULL , `timeLenght` time DEFAULT NULL , `Title` varchar(255) DEFAULT 'No-Title-Yet' , `dwnlSize` varchar(45) DEFAULT '? MegaBytes', `Quality` char(10) DEFAULT '? kbits/s', `style_id` int(3) unsigned zerofill DEFAULT NULL, `collection_id` int(3) unsigned zerofill DEFAULT '001', `lienDwnld` varchar(255) DEFAULT NULL, `VidLink` varchar(255) DEFAULT NULL, `ArtisteFeat` varchar(255) DEFAULT NULL, `slugMixTitle` varchar(100) DEFAULT NULL, `cache` enum('0','1') DEFAULT NULL, PRIMARY KEY (`mixes_id`), UNIQUE KEY `Title_UNIQUE` (`Title`), UNIQUE KEY `lienDwnld_UNIQUE` (`lienDwnld`), UNIQUE KEY `slugMixTitle` (`slugMixTitle`), KEY `style_index` (`style_id`), KEY `collection_index` (`collection_id`) ) ENGINE=InnoDB DEFAULT CHARSET=latin1 ; ALTER TABLE `mixes` ADD CONSTRAINT `collectionMustExist` FOREIGN KEY (`collection_id`) REFERENCES `collection` (`collection_id`), ADD CONSTRAINT `styleMustExist` FOREIGN KEY (`style_id`) REFERENCES `style` (`style_id`); </code></pre> <h3>Then the style Table</h3> <pre><code>CREATE TABLE `style` ( `style_id` int(3) unsigned zerofill NOT NULL AUTO_INCREMENT, `imgMixCat` varchar(255) DEFAULT NULL, `nameMixCat` varchar(45) DEFAULT NULL, `descMixCat` varchar(255) DEFAULT NULL, `slugMixCat` varchar(45) DEFAULT NULL, `hideMixCat` int(11) NOT NULL DEFAULT '0', PRIMARY KEY (`style_id`), UNIQUE KEY `nameMixCat_UNIQUE` (`nameMixCat`), UNIQUE KEY `slugMixCat` (`slugMixCat`) ) ENGINE=InnoDB DEFAULT CHARSET=latin1 AUTO_INCREMENT=20 ; </code></pre> <h3>And this is my current Query:</h3> <pre><code>SELECT count(style.style_id) AS count, nameMixCat, style.style_id, descMixCat, hideMixCat, slugMixCat, imgMixCat FROM style as style LEFT JOIN mixes as mixes ON style.style_id = mixes.style_id GROUP BY style.style_id ORDER BY style.style_id ASC </code></pre> <p>So what make return 1 when there is no mixes related to a style?</p>
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PTQuestion
    1. This table or related slice is empty.
    1. USJean-Christophe Duperron
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    1. PL
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      1. LTLinked
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. COYou should use a `INNER JOIN` instead of `LEFT JOIN`. Checkout the differences between the two types of joins: http://stackoverflow.com/questions/5706437/whats-the-difference-between-inner-join-left-join-right-join-and-full-join
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      1. POAlways return 1 even when there is no table related object
      1. USCyclonecode
    2. COOk I figure out where is my error ! I was counting styles in my _SELECT_ statement... Now I use **count(mixes.mixes_id) AS count** ...
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      1. POAlways return 1 even when there is no table related object
      1. USJean-Christophe Duperron
    3. CO`Length` is spelled this way not this way: `Lenght`
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      1. POAlways return 1 even when there is no table related object
      1. USMchl
 

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