SQL stored procedure return single record per ID with Max Date for that ID -


i having problem figuring out how particular result data , can't seem write query trick.

here have. have table [products] contains details of particular product , have second table [prodtrans] 2 in 1 many relationship on product id number field "prid" prodtrans table has date field each record of when created , price. issue having want build query take recent record each prid , return them list. tried using clause max(date) seems returning records recent date overall , skipping of prid's recent record not recent overall date.

i uncertain how should adjust criteria correct issue.

here have written far.

    select *     prodtrans     transdate = max(transdate)     order prid

i want return list of prid's on table recent transaction prid in case current pricing product is.

please know missing simple life of me can not remember is.

[update]

alright let me clarify need have output below give example dataset table

prid createdate cost margin
001 1/1/2000 25.00 2.10 005 2/11/2005 15.48 1.50 002 3/5/2005 8.49 0.23 001 2/10/2006 22.95 1.19

and on need list returns 1 instance of each prid must 1 recent date/time value. digging found out there no foreign key relationship on prid field manually entered (again legacy system trying patch did not set nor design it. have work around odd design) procedure being used output data set external application.

select p.prid, cost,margin prodtrans p join ( select max(transdate) maxdate, prid prodtrans group prid ) m   on m.prid = p.prid   , m.maxdate = p.transdate order p.prid

Comments

Post a Comment

Popular posts from this blog

Android layout hidden on keyboard show -

i have strange problem layout. when tap on edittext , keyboard shown edittext stay on bottom , when tap on to hide keyboard , keyboard hides , edittext go should when want input text. when tap again, keyboard shown , edittext goes down behind keyboard... <relativelayout android:layout_width="match_parent" android:layout_height="match_parent" > <scrollview android:layout_width="match_parent" android:layout_height="fill_parent" android:above="@+id/rl_commands"> <textview android:layout_width="match_parent" android:layout_height="wrap_content"/> </scrollview> <relativelayout android:layout_width="match_parent android:layout_height="24dp" android:id="@+id/rl_commands" android:alignparentbottom="true">
Read more

google app engine - 403 Forbidden POST - Flask WTForms -

i have flask application running on google app engine. trying submit form built using wtform , keep getting following error. 403 forbidden: don't have permission access requested resource. either read-protected or not readable server. location.html (part of code) <form method=post action="/home/location"> .... <button type="submit" class="btn btn-primary" value="submit"> directions </button> </form> main.py @app.route('/home/location', methods=['post', 'get']) def location(): form = cfcdirections.direction(request.form) print(request.method) if request.method == 'post' , form.validate(): print("after if") directions = cfcdirections() street_no = directions.no street = directions.street suburb = directions.suburb postcode = directions.postcode
Read more

c - Why would PK11_GenerateRandom() return an error -8023? -

i looking through internet trying find source of pk11_generaterandom() function see why function fail. have program uses function when moved new flavor of linux, fails after forking ( fork() ) since not believe there problem nss, suspect doing incorrectly disregarded in older versions of linux new 1 there issue. the openssl package same on 'good' , 'bad' server: openssl 0.9.8e-fips-rhel5 01 jul nss rpm differs though. 'good' has nss-3.12.2.0-2.el5 and bas has version nss-3.15.3-4.el5_10 the 'good' server uses quite obsolete linux: linux 2.6.18-128.el5 #1 smp wed jan 21 08:45:05 est 2009 x86_64 x86_64 x86_64 gnu/linux enterprise linux enterprise linux server release 5.3 (carthage) red hat enterprise linux server release 5.3 (tikanga) the 'bad' server newer: linux bad 2.6.18-371.4.1.el5 #1 smp wed jan 29 11:05:49 pst 2014 x86_64 x86_64 x86_64 gnu/linux oracle linux server release 5.10 red hat enterprise linux server release
Read more