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POsmall problem in mysql query?
 

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  1. POsmall problem in mysql query?
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    <p>i have small problem in my sql query</p> <p>my tables</p> <pre><code> /* threads thread_id/thread_title/thread_content 1 / any post title / welcome to my post relations cate_id/thread_id 1 / 1 2 / 1 categories category_id/category_name 1 / some_cate 2 / second_cate */ </code></pre> <p>My sql query</p> <pre><code>$q = mysql_query("SELECT t.*,c.*, GROUP_CONCAT(r.cate_id SEPARATOR ' ') as cate_id FROM threads as t LEFT JOIN relations as r on r.thread_id = t.thread_id LEFT JOIN categories as c on c.category_id = r.cate_id GROUP BY r.thread_id "); </code></pre> <p>php code</p> <pre><code>while($thread = mysql_fetch_array($q)){ echo 'Post title is: ' . $thread['thread_title'] . '&lt;br /&gt;'; // work fine echo 'Post content is: ' . $thread['thread_content'] . '&lt;br /&gt;'; //work fine echo 'Categories id is : ' . $thread['cate_id'] . '/' . '&lt;br /&gt;'; // cate_id of relations table work fine echo 'Categories names is : ' . $thread['category_name'] . '/'; // category name of categories table don't work fine echo '-------End of first POOOOOOOOOOOST--------'; } </code></pre> <p>OUTPUT</p> <pre><code>/* any post title welcome to my post 1/2 some_cate/ -------End of first POOOOOOOOOOOST------- */ </code></pre> <p>Now my problem is!</p> <p>There is small problem in query</p> <p>there is two categories id (1 and 2)</p> <p>should be there is two categories name!</p> <p>some_cate / second_cate</p> <p>but it display only one! though it display two categories id!</p> <p>categories names does not repeat</p> <p>but the categories id is repeat! and working fine</p> <p>@@Doug Kress</p> <p>i tryid your code but there is problem in your code with mysql_fetch_array</p> <p>i got duplication of posts!</p> <pre><code>any post title welcome to my post some_cate/ any post title welcome to my post second_cate/ </code></pre> <p>i am using CONCAT and GROUP BY to avoid this problem </p>
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    1. USOsama Tarek
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