php - Mysql Query Join Table on the most recent row -

-

i have page of categories, worked fine until did join.

the categories display so:

category 1-----------------------0----------0
discussion 1 someone

category 2-----------------------0----------0
discussion 2 someoneelse

now says discussion, need display last discussion posted category based on it's discussion_id. have tried order ... desc sorts category names not discussion names , posted by. 

 $sql = "select *, count(d.cat_id) count           discussions d           left join categories c on (c.cat_id = d.cat_id)           right join soldiers s on (s.uid = d.discussion_poster)           group d.cat_id";  $result = query($sql);     while (($row = mysqli_fetch_assoc($result)) != false) {           $cat_id = $row['cat_id'];     $discussion_id = $row['discussion_id'];    $cat_title = $row['cat_title'];    $discussion_title = $row['discussion_title'];     $discussion_time = $row['discussion_time'];    $count = $row['count'];    $discussion_poster_id = $row['discussion_poster'];    $discussion_poster = $row['soldier']; } 

$sql = " select * categories c inner join (    select max(discussion_id) discussion_id,    count(discussion_id) count,    cat_id       discussions    group    cat_id ) d1 on (c.cat_id = d1.cat_id) inner join discussions d on (d1.discussion_id = d.discussion_id) inner join soldiers s on (s.uid = d.discussion_poster) group d.cat_id";

Comments

Post a Comment

Popular posts from this blog

html - Styling progress bar with inline style -

-
i trying set progress bar color red using inline style. need in way because have access <body> part of document. style need apply: progress { color: red } progress::-moz-progress-bar { background: red;} progress::-webkit-progress-value { background: red; } progress[aria-valuenow]:before { background: red; } i tried <progress style="background: red;"> incorrect effect, progress bar color turns blue red background. guide right direction desired style? thank in advance. here live example: https://jsfiddle.net/z36d3f6l/
Read more

java - Oracle Sql developer error: could not install some modules -

-
i have downloaded fresh copy of sqldeveloper ( sqldeveloper-4.1.3.20.78-no-jre ) oracle website. when unzip , lauch gui, keep getting following error message: warning - not install modules: dynamic module config - no module providing capability org.netbeans.netbinox found. my system: windows 7 32 bit hp probook. jdk 1.6 , 1.7, 1.8 available in java/jdk subdirectory. netbeans 8.0.2 installed finally got way out after dirty hours. extracted sqldeveloper zip in nested directory. i.e: e://a/b/c/sqldeveloper. starting sqldeveloper gui above directory threw erros. solution: go in c:\users**username**\appdata\roaming : delete sql developer , sqldeveloper folders extract sql developer zip in new non nested directory. i.e: e:// start , should work now reference: https://community.oracle.com/thread/3870680?start=0&tstart=0
Read more

How to use autoclose brackets in Jupyter notebook? -

-
this may sound silly question, how make use of autoclose brackets in jupyter notebook? example, when type print( jupyter notebook auto-closes brakets print() and places cursor inside. type argument, say print(1 + 1) now cursor between second 1 , right bracket ) . key navigate right of ) ? of course can press end or → or ) achieve this, not seem save time, purpose of brackets autoclose suppose? thanks in advance.
Read more