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POHow to count unique results from multiple MySQL queries using PHP?
 

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  1. POHow to count unique results from multiple MySQL queries using PHP?
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    <p>I have what might be a simple question but I can't seem to figure out how to do it. I am trying to write a query that counts the number of unique results per query and stores both the values and the number of times it was a query result to a different database.</p> <p>Here's an example of what I am basically trying to do...</p> <p>Say I have a table 'color'</p> <pre><code>+------------+------------+------------+ | id | color | letter | +------------+------------+------------+ | 1 | blue | a | | 2 | blue | b | | 3 | red | a | | 4 | red | b | | 5 | green | a | +------------+------------+------------+ </code></pre> <p>I have a query that will run multiple times using this table to find the corresponding letter and color:</p> <pre><code>$query = ("SELECT * FROM colors WHERE letter = '$someletter'"); $query1 = mysql_query($query); while($row = mysql_fetch_array($query1)) { $id = $row['id']; $color = $row['color']; }; </code></pre> <p>For each query I am writing the $id and $color variables to a seperate log file. </p> <p>For example, using the above query, $someletter = "a". (call this query #1) The results would be:</p> <pre><code>+------------+------------+------------+ | id | color | letter | +------------+------------+------------+ | 1 | blue | a | | 3 | red | a | | 5 | green | a | +------------+------------+------------+ </code></pre> <p>Blue, red, and green would have one result each.</p> <p>If the query was run with $someletter = "b" (call this query #2) The result set would be:</p> <pre><code>+------------+------------+------------+ | id | color | letter | +------------+------------+------------+ | 2 | blue | b | | 4 | red | b | +------------+------------+------------+ </code></pre> <p>Blue and red would each get one result.</p> <p>So the total number of results for both queries #1 and #2:</p> <pre><code>+------------+------------+------------+ | id | color | totalresult| +------------+------------+------------+ | 1 | blue | 2 | | 3 | red | 2 | | 5 | green | 1 | +------------+------------+------------+ </code></pre> <p>Basically, I want to figure out a way to get a count of all the unique results for X number of queries. Because this query will be run multiple times with different variables, I would like to store the results in a database that could have a column for color and a column for total results as I have shown above. Also, I am just using the table 'color' as an example and the actual number of unique entries would be in the hundreds, so the query would have to work for that.</p> <p>I was thinking of some form of COUNT or GROUP but I cant seem to connect the dots.</p> <p>Any help would be much appreciated.</p>
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