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POCheck if db contains one or more of 1000 IDs on Google App Engine running Python
 

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    <p>I have a app that has Facebook-integration. I am getting a list of a users facebook friends (IDs) and want to query my back end to find out which users have signed up for my service</p> <p>players are inserted when signing up using their unique FBID</p> <pre><code>player = Player.get_or_insert(FBID) </code></pre> <p>If my backend receives a array of thousands of FBIDs, whats the most optimal way to query the db to find which of these IDs exist in the database?</p> <p>I can run through the array and select from players where ID=FBID,</p> <pre><code>for FBID in FBIDs: player = Player.get_by_id(FBID) if player is not None: responseArray.append(player) </code></pre> <p>but this will result in N queries, which is not very optimal, considering there will proably be thousands of players doing this kind if request to the database. </p> <p>Is it more cost-effective to do a query like <code>"select from Players where ID == FBID#1 or ID == FBID#2 or FBID#3 ..."</code>?</p>
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    1. UShakonbogen
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