sql - MySQL group_concat and count -


i trying aspects of each category in single query follows:

select b.`id` parent_id, b.`name` parent_name,      a.`id` child_id, a.`name` child_name, a.`pageid` t_id,      count( c.`id` ) deals_in_cat,      d.`aspect_values` aspects          `category_parent`          left join `navigation_filters_weightage` d on a.`id` = d.`cat_id`,          `deals_parent_cat` b,          `deals` c      a.`parent_id` = b.`id`      , c.`ebaydeals_category` = a.`id`          group a.`id`, d.`frequency`          order b.`order` asc, a.`order` asc, d.`frequency` desc;

this query gives me following result:

phpmyadmin result

as can see, aspects of category (mobiles, in case) in separate row. want aspects of categories in single row. so, try query:

select b.`id` parent_id, b.`name` parent_name,      a.`id` child_id, a.`name` child_name, a.`pageid` t_id,      count( c.`id` ) deals_in_cat,      group_concat( distinct d.`aspect_values` order d.`frequency` desc ) aspects          `category_parent`          left join `navigation_filters_weightage` d on a.`id` = d.`cat_id`,          `deals_parent_cat` b,          `deals` c      a.`parent_id` = b.`id`      , c.`ebaydeals_category` = a.`id`          group a.`id`          order b.`order` asc , a.`order` asc;

this gives below result:

enter image description here

as see, count has increased mobiles category. there 271 items mobiles, second query multiplies number no. of aspects category.

i not sure why happening. ideas welcome.

thanks in advance.

there may repeated ids table deals try using distinct in count function

select b.id parent_id,      b.name parent_name,      a.id child_id,     a.name child_name,      a.pageid t_id,      count(distinct c.id ) deals_in_cat ...

Comments

Post a Comment

Popular posts from this blog

apache - Remove .php and add trailing slash in url using htaccess not loading css -

i have add following code htaccess file removing .php extension , add trailing slash urls. worked fine reduced page loading speed , css code not loading @ all. pages ugly. please help rewriteengine on rewritebase / ## hide .php extension snippet # externally redirect /dir/foo.php /dir/foo rewritecond %{the_request} ^[a-z]{3,}\s([^.]+)\.php [nc] rewriterule ^ %1/ [r,l] # add trailing slash rewritecond %{request_filename} !-f rewritecond %{request_uri} !/$ rewriterule . %{request_uri}/ [l,r=301] # internally forward /dir/foo /dir/foo.php rewritecond %{request_filename} !-d rewritecond %{request_filename}.php -f rewriterule ^(.*?)/?$ $1.php [l] we can rewrite urls using .htaccess files. before writing in .htaccess files need verify kind of server using. can check server adding a <?php phpinfo(); ?> in php page. ensure mod_rewrite module enabled in apache server. can identified checking phpinfo included page. common methods used url rewriting follows ...
Read more

javascript - jQuery show full size image on click -

pretty self explanatory not workking . i want display full image when user click on image... yes know there tons of plugins but i want keep simple. any idea ? css : .full { display: none; width: 500px; height: 500px; margin-left: 100px; margin-top: -300px; position: fixed; background-color: #f00; z-index: 6; } .thumbnail { width: 50px; height: 50px; } html: <img class="thumbnail" src="http://4.bp.blogspot.com/-uhbdp2esxng/txneptvi92i/aaaaaaaaaky/upfqis7zto0/s1600/rihanna-wallpaper.jpg"> jquery: $(document).ready(function() { $('.thumbnail').on('click', function() { var img = $('<img />',{src:this.src,'class':'full'}); $('.full').html(img).show(); console.log('done!'); }); }); try looking how jquery works. $(document).ready(function() { $('.thumbnail').on('click', function(...
Read more