Oracle Date datatype, transformed to 'YYYY-MM-DD HH24:MI:SS TMZ' through SQL -


i have application uploads oracle data datatype column via:

to_timestamp_tz('2012-10-09 1:10:21 cst','yyyy-mm-dd hh24:mi:ss tzr')

i need pull following format , timezone data column: 'yyyy-mm-dd hh24:mi:ss cdt'

note: date uploaded in cst needs returned in cdt.

i have google'd have found following date datatypes:

select datecolumn datetable; 09-nov-12  select to_char(datecolumn,'yyyy-mm-dd hh24:mi:ss') datetable; 2012-10-09 1:10:21

i have tried following also: 

to_timestamp_tz(datecolumn,'yyyy-mm-dd hh24:mi:ss cdt') data format not recognized  to_timestamp_tz(crte_dt,'yyyy-mm-dd hh24:mi:ss tzh:tzm') 09-nov-12 1:10:21 +01:00 don't understand why not come yyyy-mm-dd?

how can solve problem?

there's bit of confusion in question:

  • a date datatype doesn't save time zone component. piece of information truncated , lost forever when insert timestamp time zone date.
  • when want display date, either on screen or send system via character api (xml, file...), use to_char function. in oracle, a date has no format: point in time.
  • reciprocally, use to_timestamp_tz convert varchar2 timestamp, won't convert date timestamp.
  • you use from_tz add time zone information timestamp (or date).
  • in oracle, cst time zone cdt not. cdt daylight saving information.
  • to complicate things further, cst/cdt (-05:00) , cst/cst (-06:00) have different values obviously, time zone cst inherit daylight saving information depending upon date default.

so conversion may not simple looks.

assuming want convert date d know valid @ time zone cst/cst equivalent @ time zone cst/cdt, use:

sql> select from_tz(d, '-06:00') initial_ts,   2         from_tz(d, '-06:00') @ time zone ('-05:00') converted_ts   3    (select cast(to_date('2012-10-09 01:10:21',   4                              'yyyy-mm-dd hh24:mi:ss') timestamp) d   5            dual);  initial_ts                      converted_ts ------------------------------- ------------------------------- 09/10/12 01:10:21,000000 -06:00 09/10/12 02:10:21,000000 -05:00

my default timestamp format has been used here. can specify format explicitely:

sql> select to_char(from_tz(d, '-06:00'),'yyyy-mm-dd hh24:mi:ss tzr') initial_ts,   2         to_char(from_tz(d, '-06:00') @ time zone ('-05:00'),   3                 'yyyy-mm-dd hh24:mi:ss tzr') converted_ts   4    (select cast(to_date('2012-10-09 01:10:21',   5                              'yyyy-mm-dd hh24:mi:ss') timestamp) d   6            dual);  initial_ts                      converted_ts ------------------------------- ------------------------------- 2012-10-09 01:10:21 -06:00      2012-10-09 02:10:21 -05:00

Comments

Post a Comment

Popular posts from this blog

monitor web browser programmatically in Android? -

i've got tricky question here. need users make payment bank (namely barclaycard) in uk. so, have https url , add parameters (such amount pay, order reference, etc) url, start http connection intent.actionview, redirect user browser can enter credit card details on bank's webpage , make payment our account successfully. far ? the code use below (i changed values privacy reasons) problem is, need app when user has completed/failed/cancelled payment. barclaycardautomatically redirects particular url when payment has succeeded, 1 if failed. there no way of knowing when barclaycard payment has succeeded go android app somehow ? button cardbutton = (button) findviewbyid(r.id.card_button); cardbutton.setonclicklistener(new view.onclicklistener() { @override public void onclick(view arg0) { string prehashstring = new string(); string prohashstring = new string(); string shapassphrase = new string(); shapassphrase = "gsvth£h70zkh...
Read more

Shrink a YouTube video to responsive width -

i have youtube video embedded on our website , when shrink screen tablet or phone sizes stops shrinking @ around 560px in width. standard youtube videos or there can add code make go smaller? you can make youtube videos responsive css. wrap iframe in div class of "videowrapper" , apply following styles: .videowrapper { float: none; clear: both; width: 100%; position: relative; padding-bottom: 56.25%; padding-top: 25px; height: 0; } .videowrapper iframe { position: absolute; top: 0; left: 0; width: 100%; height: 100%; } the .videowrapper div should inside responsive element. padding on .videowrapper necessary keep video collapsing. may have tweak numbers depending upon layout.
Read more

wpf - PdfWriter.GetInstance throws System.NullReferenceException -

i'm trying create pdf document using itextsharp 5.3.4 using following document document = new document(); filestream stm = new filestream(filename, filemode.create); pdfwriter writer = pdfwriter.getinstance(document, stm); i'm getting system.nullreferenceexception following stack trace: system.nullreferenceexception occurred hresult=-2147467261 message=la référence d'objet n'est pas définie à une instance d'un objet. source=itextsharp stacktrace: à itextsharp.text.version.getinstance() innerexception: i've verified neither document nor stm null, , if select "continue" in vs12 document created - exception thrown. updated itextsharp 5.4.0 , it's still occurring. can't find information on anywhere - got ideas? make sure not catching exceptions. nullreferenceexception can 1 caught , handled inside itextsharp, don't care it. fact can continue supports theory. change following setting verify: debug -> exceptions ...
Read more