tsql - SQL OVER(Partition) issue - selecting a subset -


i'm trying specific subset of data using "over(partition)" syntax. i've created sample data illustrate. running following cte results in small example result set.

i need calculate 2 date ranges using following definitions/pseudocode 1: days close = closedate stat = 'closed' minus opendate partitioned problem 2: days solve = "closeddate stat = 'solved' minus opendate partitioned problem.

i can #1 using over(partition) syntax, cannot figure out #2. 

with cte  ( select 114110712007835 'srnumber', 214110712007835004 problemnumber, 'open' 'stat',    314110712007835004001 tasknumber, convert(datetime, '2015-03-02 19:47:43',120) opendate,  convert(datetime, '2015-03-03 19:36:37',120) closedate union  select 114110712007835 'srnumber',   214110712007835004 problemnumber, 'investigate' 'stat',   314110712007835004002 tasknumber, convert(datetime, '2015-03-04 00:29:13',120)  opendate, convert(datetime, '2015-03-05 19:36:34',120) closedate  union  select 114110712007835 'srnumber',   214110712007835004 problemnumber, 'solve' 'stat', 314110712007835004003 tasknumber, convert(datetime, '2015-03-06 18:17:13',120)  opendate, convert(datetime, '2015-03-07 13:07:31',120) closedate  union select 114110712007835 'srnumber',   214110712007835004 problemnumber, 'close' 'stat', 315032012542588001001 tasknumber, convert(datetime, '2015-03-08 15:24:34',120)  opendate, convert(datetime, '2015-03-09 15:15:42',120) closedate  union select 114110712007835 'srnumber',   215032012542588001 problemnumber, 'open' 'stat',  315032012542588001002 tasknumber, convert(datetime, '2015-04-20 20:05:48',120)  opendate, convert(datetime, '2015-04-21 03:24:24',120) closedate  union select 114110712007835 'srnumber',   215032012542588001 problemnumber, 'investigate' 'stat',   315032012542588001003 tasknumber, convert(datetime, '2015-04-22 18:55:03',120)  opendate, convert(datetime, '2015-04-23 03:24:28',120) closedate  union select 114110712007835 'srnumber',   215032012542588001 problemnumber, 'solve' 'stat', 315032012542588001004 tasknumber, convert(datetime, '2015-04-24 13:35:24',120)  opendate, convert(datetime, '2015-04-27 02:24:31',120) closedate union select 114110712007835 'srnumber',   215032012542588001 problemnumber, 'close' 'stat', 315032012542588001004 tasknumber, convert(datetime, '2015-04-26 13:35:24',120)  opendate, convert(datetime, '2015-04-29 03:24:31',120) closedate )  select srnumber, problemnumber, stat, opendate, closedate, --min(opendate) over(partition problemnumber) mindate, max(closedate) over(partition problemnumber) maxdate  case  when stat = 'solve' datediff(mi,min(opendate) over(partition problemnumber),max(closedate) over(partition problemnumber))  else null end days_to_solve  ,datediff(mi,min(opendate) over(partition problemnumber),max(closedate) over(partition problemnumber))  days_to_close   cte order problemnumber asc, opendate asc go

a subquery result need.

select  srnumber ,             problemnumber ,             stat ,             opendate ,             closedate , --min(opendate) over(partition problemnumber) mindate, max(closedate) over(partition problemnumber) maxdate             ( case when stat = 'solve'                    ( select top 1                                     datediff(mi, min(opendate) on ( ),                                                               max(closedate) on ( ))                                cte c                               c.problemnumber = cte.problemnumber                                     , c.closedate <= cte.closedate                         )                    else null               end ) days_to_solve ,             datediff(mi, min(opendate) on ( partition problemnumber ),                      max(closedate) on ( partition problemnumber )) days_to_close        cte     order problemnumber asc ,             opendate asc

Comments

Post a Comment

Popular posts from this blog

c# - Validate object ID from GET to POST -

i have method allows user access comment have made on site. have post method lets them update comment. my normal solution send entire comment model through, let them update it, update on database when post back. involve sending commentid through in hiddenfor , can manipulated. how can verify commentid sent in get method same i'm getting in post , not able alter comment wish? how can verify commentid sent in method same i'm getting in post? basically have validate following things in post - user logged-in user. authenticated users post comments. commentid in post , should valid commentid , should present in database. userid associated logged-in user should same userid associated comment . comment should contain userid column, can check @ time of update. to make sure update happens comment has been sent in get - hold commentid in session , in post action compare commentid value in session .
Read more

node.js - Custom Model Validator SailsJS -

when using custom model validator checks record within model. return within spread doesn't seem end control flow. //post.js model /** * custom validator **/ types: { isuservalid: function(user_id) { var promise = require('bluebird'); promise.all([ user.findone({id: user_id}) ]) .spread(function(user) { console.log(user); if (user === null || user === undefined) { console.log('failed'); return false; }else{ console.log('passed'); return true; } }); } }, my response standard validation failed response. { "error": "e_validation", "status": 400, "summary": "1 attribute invalid", "model": "post", "invalidattributes": { "owner": [ { "rule": "isuservalid", ...
Read more

php - Find a regex to take part of Email -

i have following emails need extract part from: bestellnummer xxx: 1 von xxx, 1er pack ------------- anfang der nachricht ------------- foo bar baz foo bar baz // <<<<< need text here ------------- ende der nachricht ------------- ------------- anfang der nachricht ------------- foo bar baz foo bar baz ------------- ende der nachricht ------------- there 0 unlimited occurences of ------------- anfang der nachricht ------------- ------------- ende der nachricht ------------- and i'm able extract first part regex: $re = "/------------- .*? -------------.?(.*?).?------------- .*? -------------/s"; but, i'm quite new on learning regex, i'm pretty sure there must better regex extract part (foo bar baz foo bar baz) of text between ------------- anfang der nachricht ------------- ------------- ende der nachricht ------------- as can in different languages, i'm using .? to match between hyphens. i...
Read more