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POcount first time occurrence of foreign keys
 

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    <p>Besides the tags, I would like to solve this on query, if possible. I have this table</p> <pre><code>activity_type | value | date | company_id network.new | 1 | 2011-10-08 | 1 members.count | 3 | 2011-10-08 | 1 network.new | 1 | 2011-10-10 | 2 network.new | 1 | 2011-10-11 | 3 members.count | 4 | 2011-10-11 | 2 </code></pre> <ul> <li>That's basically a log activity. </li> <li>'network.new' activity occur only once per company_id</li> <li>'members_count' activity occur only after 'network.new' appears per company_id and can appear once per day per company_id.</li> </ul> <p>I need to make a line graph that the X axis is the date, the Y axis is the quantity of two things:</p> <ol> <li>How many company_ids have members each day of activity for the <strong>first time</strong> (That is the one that is giving me a hard time);</li> <li>How many have the network.new activity and only that activity for each given day.</li> </ol> <p>All queries I tried gave me false-positive lists, mostly because it counts company_ids that have the 'members_count' activity every day.</p> <p>I wish, if possible, to create a query that give me date, first_time_members, new_company columns for <code>create view</code> purposes. I hope my question was clear enough, and not silly because I couldn't find it anything that looks close to my problem anywhere.</p> <p><strong>[EDIT]</strong></p> <p>Since my english is really poor, I couldn't make myself clear I'm going to try explain a litle more:</p> <blockquote> <p>My client have a network of companies and he wishes to learn how many companies join the network day by day but there's a catch: A company when sign in for the network, it is only considered a completed one when it is also had registered members. So he wants to know, how many companies make a 'incomplete' sign up and how many make a 'complete' sign up.</p> </blockquote> <p>Mr Ollie Jones put me in the right direction, I think I can use what he tough me, but it is not right there yet. Thank ollie Jones for your answer by the way. Answers like yours made me love this site.</p>
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    1. USPalantir
    1. USPalantir
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    1. COCan you give us a sample result. Guessing waht you mean by member and first time.
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      1. POcount first time occurrence of foreign keys
      1. USTony Hopkinson
 

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