Access SQL Subquery Criteria based on Next Record -


i have column of qualitychecktimes. have different table starttimes , endtimes of productionskids.

i need query returns each qualitychecktime, minimum skidid , maximum skidid based on starttimes , endtimes.

sample data

 qcchecktimes        12:00         1:00         2:00     skidid   skidstarttime  skidendtime         1        12:05     12:20         2        12:21     12:40         3        12:41     12:50         4        12:51      1:06

expected output: 

 qcchecktimes minskidid  maxskidid       12:00     skid1      skid3          1:00     skid4        ...         2:00       ...

i've tried few things, crux of need find way matching skid times between 2 qualitycheck times, qualitytimes being on separate rows. 

select... [skidstartdatetime] >= [qualitysamples_tbl].[sampledatetime] , [skidenddatetime] < next?? [qualitysamples_tbl].[sampledatetime]);

you can use subquires , hour() function achieve this: try this:

table1 contains: qcchecktimes

table2 contains: skidid,skidstarttime,skidendtime

select table1.qcchecktimes,         iif([minofid] null, "...", "skid" & [minofid])  minskidid,         iif([c].[maxofid] = [b].[minofid], "...",         iif([maxofid] null, "...", "skid" & [maxofid])) maxskidid    (table1          left join (select table1.qcchecktimes,                            min(table2.skidid) minofid                       table1,                            table2                      (( ( hour([skidendtime]) ) = hour([qcchecktimes]) ))                     group  table1.qcchecktimes) b                 on table1.qcchecktimes = b.qcchecktimes)         left join (select table1.qcchecktimes,                           max(table2.skidid) maxofid                      table1,                           table2                     (( ( hour([skidendtime]) ) = hour([qcchecktimes]) ))                    group  table1.qcchecktimes) c                on table1.qcchecktimes = c.qcchecktimes  group  table1.qcchecktimes,            iif([minofid] null, "...", "skid" & [minofid]),            iif([c].[maxofid] = [b].[minofid], "...",            iif([maxofid] null, "...", "skid" & [maxofid]));

Comments

Post a Comment

Popular posts from this blog

What is happening when Matlab is starting a "parallel pool"? -

running parallel cpu processes in matlab starts command parpool() according documentation , function: [creates] special job on pool of workers, , [connects] matlab client parallel pool. this function takes bit of time execute, on order of 30 seconds. in other multi-cpu paradigms openmp, parallel execution seems totally transparent -- i've never noticed behavior analogous matlab (granted i'm not experienced parallel programming). so, happening between time parpool() called , when finishes executing? takes long? parallel computing toolbox enables run matlab code in parallel using several different paradigms (e.g. jobs , tasks, parfor , spmd , parfeval , batch processing), , run either locally (parallelised across cores in local machine) or remotely (parallelised across machines in cluster - either 1 own, or 1 in cloud). in of these cases, code run on matlab workers , copies of matlab without interactive desktop. if you're intending run on remo...
Read more

angular - DownloadURL return null in below code -

when change file updated in firebase storage when try downloadurl show null. filechange(event: any) { const imagefolder: string = this.employee.id; const filelist: filelist = event.target.files; const file: file = filelist[0]; const storageref = firebase.storage().ref().child(`${imagefolder}/profile.jpg`).put(file); console.log(storageref.snapshot.downloadurl); } the put() asynchronous. if want url after file uploaded have this: firebase.storage().ref().child(`${imagefolder}/profile.jpg`).put(file).then((snapshot) => { storageref = snapshot.downloadurl: console.log(snapshot.downloadurl); });
Read more

php - Cannot override Laravel Spark authentication with own implementation -

during login process of laravel spark need request token of remote api. api stores exact same users , passwords laravel spark application. therefore need username , non hashed password of user during authentication process. i thought overriding authenticated method solution problem. in routes/web.php override post /login endpoint , pointing endpoint own logincontroller: <?php namespace app\http\controllers\auth; use illuminate\support\facades\log; use illuminate\http\request; use laravel\spark\http\controllers\auth\logincontroller sparklogincontroller; class logincontroller extends sparklogincontroller { /** * create new login controller instance. * * @return void */ public function __construct() { parent::__construct(); } /** * handle successful authentication attempt. * * @param request $request * @param \illuminate\contracts\auth\authenticatable $user * @return response */ public fu...
Read more