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POReceiving duplicate answers when query a database
 

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  1. POReceiving duplicate answers when query a database
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    <p>ok I have looked around here for a few days now, and I did find this : <a href="https://stackoverflow.com/questions/2183373/mysql-group-by-two-columns">MySQL GROUP BY two columns</a> This has been helpful but hasn't worked for what I am currently working on.</p> <p>So here is the scope of things I have 3 different tables</p> <p>table 1 (quantities) consist of:</p> <pre><code>quantity_id int(11) auto_increment not null (primary key) product_id int(11) not null color_id int(11) not null size_id int (11) not null quantity int (11) not null </code></pre> <p>table 2 (colors) consist of:</p> <pre><code>color_id int(11) auto_increment not null (primary key) color_name varchar(255) </code></pre> <p>table 3 (sizes) consist of:</p> <pre><code>size_id int (11) auto_increment not null (primary key) size varchar(255) SELECT s.size, c.color_name, q.quantity, q.size_id, q.product_id, q.color_id FROM quantities q, colors c, sizes s WHERE q.color_id = c.color_id AND q.size_id = s.size_id AND q.product_id = $pid GROUP BY q.color_id ORDER BY q.size_id </code></pre> <p>$pid is the product id passed by the form.</p> <p>When I load the results into 2 different select statements: one for color, one for size I get multiple of the same color or size:</p> <pre><code>red s red L yellow L </code></pre> <p>I understand that it is literally pulling the rows out of the database and displaying them, but how do I not repeat myself?</p> <p>I have tried this query</p> <pre><code>SELECT s.size, c.color_name, q.quantity, q.size_id, q.product_id, q.color_id FROM quantities q LEFT JOIN colors c ON q.color_id = c.color_id LEFT JOIN sizes s ON q.size_id = s.size_id WHERE q.product_id = $pid </code></pre> <p>Is there a better way?</p>
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    1. COwhat is exactly what you're trying to accomplish?
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    2. COThat would be helpful. ok the end game here is I only want to populate the select boxes with products that have a quantity of more than 1. I do not want to show multiple colors of 'red','blue', nor do I want to show multiple sizes 'S','L' etc as of now it can show red L red S yellow L blue S
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