In MySQL, how to generate percentage by DATE with compound group by? -


i have set of 3 queries return exact data like:

set @mydate = '2013-04-15';  set @dailycpu = (select sum(cputime) eojeot date(stoptime) = @mydate);  select usercode, date(stoptime) thedate,     sum(cputime) 'total cpu secs',     sum(elapsedtime) 'total elapsed secs',     (sum(cputime)/@dailycpu) * 100 pctcpu eojeot date(stoptime) = @mydate group usercode;

this returns (i obfuscated real users)

usercode    thedate     total cpu secs  pctcpu fred        2013-04-15  35873067        0.4069 wilma       2013-04-15  26122714        0.2963 barney      2013-04-15  234689          0.0027 dino        2013-04-15  3284851116      37.2593 pebbles     2013-04-15  48108320        0.5457 bambam      2013-04-15  23671548        0.2685 kazoo       2013-04-15  284847          0.0032

i trying put single query can add group of mydate.

basically, want sum cputime day particular user , show percentage of total cpu time day.

a snippet of table like:

usercode varchar(17) cputime bigint(20) stoptime datetime

i have looked @ self joins trying join sum(cputime) a.date = b.date, did not work.

i thought self join posts read on se cannot find case factors in compound group (usercode, date(stop time) ).


Comments

Post a Comment

Popular posts from this blog

node.js - Bad Request - node js ajax post -

i'm using express 3.0 , node v0.11.0. have button submits form , i'm using ajax post data json object node server. client code is: $('#contact').submit(function(e) { console.log('submit called'); var formdata = json.stringify($('form').serializeobject()); console.log(formdata); $.ajax({ url: "http://localhost:3000/savedata/", type: "post", datatype: 'json', data: {objectdata: formdata}, contenttype: "application/json", complete: function() { console.log('process complete'); }, success: function(data) { console.log('process sucess'); }, error: function() { console.log('process error'); }, }); return false; }); then on server: var express = require('express'); var app = express(); app.set('views', __dirname + '/views'); app.set('view engine', 'jade'); app.use(express.bodyparser());...
Read more

Why does Ruby on Rails generate add a blank line to the end of a file? -

running rails generate controller foo home results in: class foocontroller < application controller def home end end (there's nothing on line in actual file, blank line) is there purpose blank line? it's common use newline indicate end of line, last line. many editors (like vi, use) add in newline silently. consensus text files (especially in unix world) should end in newline, , there have been problems historically if wasn't present. why should text files end newline? the tool used count lines in file "wc" counts newlines in file, without trailing newline show 3 instead of 4. it improves readability of templates used in generator. consider: https://github.com/rails/rails/blob/master/railties/lib/rails/generators/rails/controller/templates/controller.rb to remove trailing newline, template have last line of: end<% end -%> instead of: end <% end -%> that seems less readable me. the discussion below refers ...
Read more

keyboard - Smiles and long press feature in Android -

i've created android keyboard. how add features inserting smilies, , using long keypresses display symbols? to create long-press behavior allows select several options pop-up menu, follow guide (specifically pop-up menu section): http://developer.android.com/guide/topics/ui/menus.html smileys (also known emoticons) combination of keys, understood programs , parsed same way. have do, when clicks smiley face on keyboard, simulate pressing of key combination matching emoticon. example, when clicks smiley, should simulate key presses ':' , ')' :). here's list of emoticons: http://en.wikipedia.org/wiki/list_of_emoticons
Read more