inner join - SQL query to combine two user tables, remove duplcates and find the latest update entry for each user -


i have 2 sql tables. tablea has list of active users, tableb has list of tickets users submitted emails , submit dates.

i need output list of users exist in table & table b (excluding users in tableb) along date of last ticket submitted. because several users removed active users table, tickets remain in second table.

table fields:

euser eusername, eemailaddress  work_orders txtcontactemail, submitdate   desired output: eusername, eemailaddress, submitdate

my attempt

select   euser.eusername        , euser.eemailaddress        , work_orders.txtcontactemail        , max(work_orders.dtrequest) lastupdate  euser inner join work_orders  on euser.eemailaddress = work_orders.txtcontactemail  group euser.eusername        , euser.eemailaddress        , work_orders.txtcontactemail 

select  a.eusername,         a.eemailaddress,         b.maxsubmitdate tablea inner join (select txtcontactemail, max(submitdate) maxsubmitdate             tableb             group txtcontactemail) b     on a.eemailaddress = b.txtcontactemail

Comments

Post a Comment

Popular posts from this blog

php - SPIP: From Tag directly to an article -

i work spip , plugin called tagsphere works fine tags in spip. have tag groupe put 1 article tag. when click on tag in tagsphere send me before menu can see articles linked tag. want send me directly article without see tag menu before. here code model of thagsphere: <div id="tagsphere-#env{id_article}"> <ul> <boucle_mot(mots){id_groupe ?}> <li>[<a href="#url_mot">(#titre)</a>]</li> </boucle_mot> </ul> </div> anybody idea? if want skip tag page, have link directly article. <b_article> block prevents display tag if no article linked. <div id="tagsphere-#env{id_article}"> <ul> <boucle_mot(mots){id_groupe ?}> <b_article> <li> <a<boucle_article(articles){...
Read more

jquery - isAjaxRequest always return false -

i got error message 404,'model has not been saved' following code my action controller public function actionextend($id) { $model=$this->loadmodel($id); if(yii::app()->request->isajaxrequest) { $model->todate = date('y-m-d h:i:s a',(strtotime('next month',strtotime(date('y-01-d'))))); if($model->save()) { yii::app()->end(); } else { throw new chttpexception(404,'model has not been saved'); } } } the jquery call $("#buttonextend<?php echo $this->post_row;?>").click(function(e){ $.ajax({ type: "post", url: "<?php echo yii::app()->createurl('post/extend', array('id' => $data['id'])); ?>", }); }); why not ajax call ? thank help i found response, missed } , function ...
Read more

ruby on rails - In a controller spec, how to find a specific tag in the generated view? -

i know integration tests preferred need ran in controller test, i'm testing gem injecting html code in view, xhr can't run in feature spec (if can, please explain me how :) ) so rspec controller tests can assert selector present (with capybara) : response.body.should have_selector('#foobar') has_selector? call all method capybara find selector. what want last child of body , assert id in particular. afaik it's not possible have_selector. what : all('body:first-child').first.id.should == '#foobar' however, capybara dsl, defined (more or less): def all(*args) page.all(*args) end and page empty unless use visit it's integrations specs. how can use capybara all method inside rspec controller test ? i can't test right after googling seems trick def page capybara::node::simple.new(response.body) end source
Read more