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POnot listing users when using innerjoin with max in php mysql
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  1. POnot listing users when using innerjoin with max in php mysql
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    copied!<p>i am new in php i have a problem in my php code.please help me.. i have two tables</p> <p> </p> <pre><code>seeker seeker_nic-----username 111-------------ali 222-------------umer 333-------------raza </code></pre> <p><br>`</p> <pre><code>requestblood id-------seeker_nic-----requireddate 1------- 111 ----------2012/9/9 2 ------- 222-----------2012/5/8 3 ------ 111-----------2012/10/11 4 ------- 111-----------2012/11/12 5 ------- 222-----------2012/7/9 6 ------- 333 ----------2012/4/4 </code></pre> <p>now i want to list users one time with maximum date like..</p> <pre><code>s.no---- username----- requireddate 1------- ali---------- 2012/11/12 2------- umer--------- 2012/7/9 3------- raza--------- 2012/4/4 </code></pre> <p>i am using this query</p> <pre><code>"SELECT bloodrequest.requireddate, seeker.username FROM bloodrequest JOIN seeker ON bloodrequest.seeker_nic= seeker.seeker_nic Join (SELECT max(requireddate)as maxdate FROM bloodrequest) maxresults on bloodrequest.requireddate = maxresults.maxdate" </code></pre> <p>.. but it shows only 1 record not the list and if use this query (left join instead of join)</p> <pre><code>"SELECT bloodrequest.requireddate, seeker.username FROM bloodrequest left JOIN seeker ON bloodrequest.seeker_nic = seeker.seeker_nic left join (SELECT max(requireddate)as maxdate FROM bloodrequest) maxresults on bloodrequest.requireddate = maxresults.maxdate"; </code></pre> <p>then it shows all records with all dates but not tha maximum..</p> <pre><code>id------seeker_nic -------requireddate&lt;br&gt; 1 ------ ali --------- 2012/9/9&lt;br&gt; 2 ------ ali ---------- 2012/10/11&lt;br&gt; 3 ------ ali ------------ 2012/11/12&lt;br&gt; 4------ umer------------- 2012/5/8&lt;br&gt; 5------- umer -------------2012/7/9&lt;br&gt; 6 ------ raza--------------2012/4/4&lt;br&gt; </code></pre>
 

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