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PODiaplay posts using Sql sub query
 

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  1. PODiaplay posts using Sql sub query
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    <p>I am building a small social network for my department.</p> <p>I have the homepage as a place where you can make comments and your friends can comment on it.</p> <p>I have <strong>4 tables</strong> ...allposts_tb, friendship_tb,response_tb and signup_tb..</p> <p>The <strong>allposts_tb</strong> collect the updates and post made by people it has the following columns (<code>all_id(PK)</code>,<code>name</code>,<code>comment</code>,<code>time</code>) </p> <p>The <strong>friendship</strong>_tb as the columns (<code>friend_id(Pk)</code>,<code>myname</code>,<code>newfriend</code>,<code>status</code>)</p> <p>The <strong>response_tb</strong> as columns(<code>id(Pk)</code>,<code>name</code>,<code>response</code>,<code>all_id(Fk)</code>,<code>time</code>)</p> <p>The <strong>signup_tb</strong> as columns (<code>signup_id</code>,<code>lastname</code>,<code>firstname</code>,<code>email</code>,<code>password</code>,<code>country</code>,<code>profilepicture</code>)</p> <p>I can display comments made by people easily using the sql query below</p> <pre><code> SELECT allposts_tb.all_id,allposts_tb.name,allposts_tb.comment, allposts_tb.time, friendship_tb.myname,friendship_tb.newfriend,signup_tb.firstname, signup_tb.lastname,signup_tb.email,signup_tb.profilepicture, allposts_tb.expand FROM allposts_tb,friendship_tb,signup_tb WHERE allposts_tb.name = friendship_tb.newfriend and friendship_tb.myname=colname and allposts_tb.name=signup_tb.email ORDER BY allposts_tb.all_id DESC and colname=$_SESSION['MM_Username'] </code></pre> <p>Well am having problems displaying responses made by people on a particular comment right below the comment...just like replicating facebook's page.Immediately you say something,it should be displayed right below the comment... I know am meant to use a sub query. right inside the query i gave you guys..have read a lot of web pages but cant get it to work...please help me...</p>
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    1. USuser1706805
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    1. COSince your users don't have direct access to `$_SESSION['MM_UserName']` its not a huge risk, but your code still is vulnerable to [SQL injection] (http://php.net/manual/en/security.database.sql-injection.php). You should use the appropriate method of your database library to escape your data prior to making the query.
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      1. USConrad Frix
 

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