TIMESTAMP subtraction

Similar Questions

• problem with counting seconds

  I found this function
  
  SELECT
  
  TRUNC (86400 *(date_to-date_from))-60 * (trunc ((86400 *(date_to-date_from)) / 60));
  TRUNC ((86400 *(date_to-date_from)) / 60)-60 * (trunc (((86400 *(date_to-date_from)) / 60) / 60));
  TRUNC (((86400 *(date_to-date_from)) / 60) / 60)-24 * (trunc (((86400 *(date_to-date_from)) / 60) / 60) / 24)),
  TRUNC (((86400 *(date_to-date_from)) / 60) / 60) / 24)
  
  IN tempsSec, tempsMin, timeHr, heureDAY
  
  FROM DUAL;
  
  Nice and easy compare two dates and return the (time) difference as 13 hours, 40 minutes, 10seconds
  
  now, my system shows delays like this from 10:00 to 10:19 (which is the duration of 9 seconds if you use the function above).
  now, what I tried to do is to add 1 second of time, since there are between 10:00 and 10:19 actuially 10 seconds elaps (0 to 1 (1 second), 1-2 (1 second)...)
  
  so I tried to just add a seconds before the date_to
  
  SELECT date_to + 1/24/60/60 INTO date_to FROM DUAL; -Add a second because 00 09 is 10 seconds of display time (not 9!)
  
  but sometimes, this provides a valid information, sometimes when counting only seconds each presents a wrong time, so there is an obvious mistake, I do somewhere...

  Rather than trying to debug the code you posted, it is probably easier to convert dates to timestamp, subtract the timestamps whiich returns an interval and extract the components of the interval.

  Note that I add 1 second in the inline query. For the subtraction normal timestamp, you who would remove.

  SQL> ed
  Wrote file afiedt.buf
  
    1  with x as (
    2    select to_date( '10/24/2009 10:05:10',
    3                    'MM/DD/YYYY HH24:MI:SS' ) date_from,
    4           to_date( '10/24/2009 14:55:19',
    5                    'MM/DD/YYYY HH24:MI:SS' ) date_to
    6      from dual
    7    union all
    8    select to_date( '10/24/2009 10:05:10',
    9                    'MM/DD/YYYY HH24:MI:SS' ) date_from,
   10           to_date( '10/24/2009 10:05:29',
   11                    'MM/DD/YYYY HH24:MI:SS' ) date_to
   12      from dual
   13  )
   14  SELECT extract( day    from interval ) days,
   15         extract( hour   from interval ) hours,
   16         extract( minute from interval ) mins,
   17         extract( second from interval ) secs
   18    from (
   19  SELECT  to_timestamp(to_char(date_to,'MM/DD/YYYY HH24:MI:SS'),
   20                       'MM/DD/YYYY HH24:MI:SS')
   21          + interval '1' second
   22          - to_timestamp(to_char(date_from,'MM/DD/YYYY HH24:MI:SS'),
   23                       'MM/DD/YYYY HH24:MI:SS') interval
   24  FROM x
   25* )
  SQL> /
  
        DAYS      HOURS       MINS       SECS
  ---------- ---------- ---------- ----------
           0          4         50         10
           0          0          0         20
  

  Justin

• Addition/subtraction of TIMESTAMP interval

  Hi all
  
  I have a requirement to subtract the number of days or months or weeks of a Timestamp column and get a timestamp value in return.
  
  I have the following table-
  Table name: Test
  Columns:
  Effective_End_Date: TIMESTAMP
  Interval_type: VARCHAR2
  Interval_value: NUMBER
  
  In general, we'd go with the following query-
  
  Select Effective_End_Date - '1'-DAY interval of the test;
  
  The issue is I have to subtract the value stored in interval_value stored in the effective_end_date table. In addition, the type of interval (DAY, MONTH, etc.) is stored in the INTERVAL_TYPE.
  
  Does anyone could suggest any request for this? Let me know if you count more inputs.
  
  Thank you
  Maithily.

  Hello

  Sorry, my mistake. All branches of the CASE expression must return the same type of data. The version below works, because all branches return a TIMESTAMP:

  SELECT     test.*
  ,       CASE interval_type
              WHEN 'DAY'   THEN effective_end_date - NUMTODSINTERVAL (interval_value,     'DAY')
           WHEN 'WEEK'  THEN effective_end_date - NUMTODSINTERVAL (interval_value * 7, 'DAY')
           WHEN 'MONTH' THEN effective_end_date - NUMTOYMINTERVAL (interval_value,     'MONTH')
          END AS new_timestamp
  FROM      test;
  

• Subtracting two timestamps

  Hi all
  
  Thanks for looking
  
  I'm subtracting (systimestamp - "TIME_IN") as "HOURS_WORKED".
  (30/08/2010 16:42-30/08/2010 04:00) = "HOURS_WORKED".
  
  the column called hours, the columns hours 'worked' shows '000000000 12:42:58.9881'
  
  I understand that the hours are 12 hours and 42 minutes and 58 seconds.
  
  is it possible that I can format this column to just show me hours and minutes?
  
  of '000000000 12:42:58.9881' 12:42?
  
  is there an easier way?
  
  Thanks in advance
  
  Published by: jo3y2 on August 30, 2010 17:19

  Select double to_char(sysdate,'hh24:mi:ss')

  or

  SELECT TO_CHAR(date1,'MMDDYYYY:HH24:MI:SS') date1,
  To_char(date2,'MMDDYYYY:HH24:mi:SS') date2,
  trunc (86400 *(date2-date1))-60 * (trunc ((86400 *(date2-date1)) / 60)) seconds.
  trunc ((86400 *(date2-date1)) / 60)-60 * (trunc (((86400 *(date2-date1)) / 60) / 60)) minutes,.
  trunc (((86400 *(date2-date1)) / 60) / 60)-24 * (trunc (((86400 *(date2-date1)) / 60) / 60) / 24)) hours.
  trunc (((86400 *(date2-date1)) / 60) / 60) / 24) days.
  trunc (((86400 *(date2-date1)) / 60) / 60) / 24) / 7) weeks
  OF date_table

  See this post
  http://www.databasejournal.com/features/Oracle/article.php/2234501/A-comparison-of-oracles-date-and-timestamp-datatypes.htm

• subtract one day from timestamp

  HII,
  I want to remove a current time stamp day. Day return should have the same time today, unless the date is changed.
  
  Thank you

  You expect a date or timestamp.

  select sysdate - 1 dt from dual;
  
  DT
  ----------------------
  01/06/2010 10:02:06 AM
  

  select current_timestamp - 1 ts from dual;
  
  TS
  ----------------------
  01/06/2010 10:02:06 AM
  

• Representation of like SGL timestamp?

  Hi all

  I'm saving the binary data in the course of an application of the RT and want to convert them to ascii. I'm planning to use sgl representation for stored data to reduce the size of the file. However, using means sgl who gets the timestamp 'chopped' (i.e. we don't get to the amount of minutes in time, not dry and millisecs). So, I was wondering if there is anyway to a

  (a) get the timestamp information full of a number of sgl (i.e. using the number of timestamp vi...)

  or

  (b) when you save a timestamp, is it possible to ignore the part date (would cause in my case)? I ask only assuming that I could skip the date part then sgl representation would be enough to give me up to milliseconds.

  Thanks for your time,

  Harry

  A timestamp uses 64 bits to contain the number of seconds since the 1,1,1904 and another 64-bit for the fraction of the second current. You can not far with 32 bits that SGL gives you and you cannot 'jump' the date, because it is an integral part of the number.

  One thing you can do is create a new era instead of 1904, but if you take 10 bits to get the resolution of ms, that leaves you with 22 bits for seconds, which isn't very long.

  What you can do is this:

  1. Take the timestamp and tick counter value at some point in time before you start (t0).
  
  
  2. Have a VI that will give you the run ms value by subtracting the number of cycles of t0 in the current number of cycles.
  
  
  3. Save the t0 timestamp in a header in your file.
  
  
  4. Save the real time as the time you get to step 2 (which is a 32-bit integer).
  
  
  5. When you want to calculate the current timestamp, just do t0 (from the header) + counter.

  This should be good for about 50 days of action, after which the number of cycles longer rolls.

  There are probably some existing formats where configure you this, but I have no experience with it.

• Timestamp of the external Signal triggered using the PCIe-6351

  Hello

  I use a PCIe-6351 to acquire externally triggered data.  My block diagram looks almost exactly at this link in the section A. Posttriggered Acquisition with a digital start triggering:

  http://www.NI.com/white-paper/4329/en

  As you can see he is a straightforward acquisition.  My trigger signal is on PFI0 and it is supposed to occur at regular intervals.  However, I started to suspect that it varies in time.  For example, if this is supposed to happen every 2 milliseconds it can range from 1.9 to 2.1 milliseconds.  Is it possible for DAQmx record the time at which each trigger occurs?  I realize that it will not be synchronized with the time on the PC, but as long as I can have a time stamp of each trigger I can subtract each time individual time of the first condition for the time between triggers.

  Thank you!

  Steve

  MR. O,.

  Thanks for the reply. My system is set up to acquire many points of data at a relatively fast pace, so I their stamp on the data acquisition card and only download on the PC once the acquisition is completed. My understanding is that writing to file measure vi set a timestamp whenever he writes to the file - not for each individual data point. Is this correct?

  Steve

• How to get a date to the timestamp of a file XML format

  Hello

  I'm trying to get a date from an external XML file. My XML file looks like this:

  
  <>http://www.NI.com/LVData">
      8.6.1
      
          Date of birth
          31/03/1983
       
  

  I can get the system to retrieve the correct XML element that shows the nested and elements , but I have no way to retrieve correctly the date. It seems as if she interprets my date seconds since 1904. I try to keep the "readable" for the end user XML, so it is important to keep this date in standard U.S. date format. I eventually uses this date to calculate the age of something. I labour code to subtract a timestamp in the format of the date to the current date and time, but I can't access it when I get back from XML.

  Starting from XML schema, it looks like the timestamp element requires a cluster... but there is no documentation on what to spend. Any ideas how to get back an XML date in this format in a simple and clean?

  Here's my current VI:

  

  Thank you

  Ryan

  Cambridge, MY

  Quick Tip on "bundle by name.  You don't need to consolidate all these constants where the values correspond to what is the constant of cluster at the top.  The cluster constant defines the data structure and the starting values.  Simply group the values for specific change items.

  Example of tone would be a bit cleaner.  Although the format string should use a capital T.

  

  As always with dealing with the time, complications could arise due to dealing with time zones and leap years.  Zones shouldn't matter for the calculation of the years since you are rounded up to years.  Although you probably want to round down rather than round at most closely. (I forgot this part in my example).  The problem with leap years when you would be only in a certain number of days of the anniversary, he would round up the age.  The number of rounded days would depend on how much on leap days that nobody has seen in their lifetime.

• Timestamp conversion customer

  Hello

  I noticed weird customer in number to the time stamp function. If the entry is 0 then the time stamp indicator:

  00:00:00, 000

  DD. MM. YYYY

  which is OK, but IMHO the date should indicatecurrent the current date or a default date. If I increase the input 1, I get:

  01:00:01, 000

  1.1.1904

  So the date default 1.1.1904 (OR why is it not the case when 0 is at the entrance?) and why do I 1 h and 1 s on the clock when only 1s should be added? There is more so I entered 82801 (1 day and 1 second later) the timestamp shows:

  00:00:01, 000

  2.1.1904

  I found that trying to implement the start of Test and the elapsed time. What I did evade and currently the following current timestamp with the previous one - jusl like when you run VI with number of cycles of time.

  Another strange thing is that, when using a function to convert time in seconds, it seems that is 1 min 40 seconds then UNMIT counter is increased and the seconds counter goes up-19 and counties to 0.

  A bug or am I missing something?

  3DVision wrote:

  Another strange thing is that, when using a function to convert time in seconds, it seems that is 1 min 40 seconds then UNMIT counter is increased and the seconds counter goes up-19 and counties to 0.

  A bug or am I missing something?

  That is not hidden a timestamp in seconds. It converts to a cluster, which exempt you from then to another cluster. The behavior for this operation is to subtract each element of the cluster of the corresponding item in the other group, and that's why you see-14 seconds. As you can see, LV refuses to translate only a timestamp back.

  If you want to get the elapsed time in seconds, just subtract the two stamps with each other (you may need to convert to DBL before or after subtraction).

• How do I add time to the timestamp string

  Hello

  I have a problem with the addition of time to a timestamp string that is shown on the image below.

  

  What I need is to add some time for example. 1 hour, but if this change happens between 23:00 and 00:00, I need to change the date.

  Wanted for example results:

  14:53, 22.4.2015. --> 15:53, 22.4.2015.

  23:33, 22.4.2015. --> 00:33, 23.4.2015.

  Help, please

  Use the time to get based on seconds to get the time, use this form to add and subtract the time (to add an hour, simply add 60 * 60 seconds), use the entry timestamp in the Format Date/time function when you want an implementation of the chain.

  

  Bob Schor

• Timestamp in milliseconds

  I'm trying to calculate the time elapsed since the datatypes with the millisecond timestamps (or better) resolution.

  If I use a feedback loop node and subtract the iteration previous Timestamp of the current iteration value Timestamp value, I get a Delta t, but only at 1 second resolution.

  I think that the timestamps are a compound of an I64 (per second) and U64 (for subseconds), but can't find a way to break the timestamp in these two components.

  Rick

  PS: I need to do with data types Timestamp as the data via a datasocket comes downstream, another system that is doing the time stamp and I can't change that.

  Second, it's an I32 and fractions of a second is a DBL...

• How to get the timestamp to start at zero hours?

  Hello.

  I build software that records the values to Excel.

  The user can specify how long the test should run for, and the elapsed time should be defined as a string in hh: mm [:]

  The only problem is that the timestamp begins at 01:00 (calibrated 1904-number I guess). How can I get the count from 00:00:00, or perhaps to subtract the time at the beginning then it starts at zero.

  If you run the VI, you will understand what I mean.

  Thank you!

  Hi auto,.

  You must use relative time instead of absolute time - see the attachment...

• Timestamp is always converted to universal time?

  By applying the function 'get Date/Time' and ' Date/Time seconds to ', it seems that they are forcing UTC after conversion, even if the option for the UTC is false.

  I would like to have the actual system date and time available (which represents for the summer time and time zone as shown on my PC) out of timestamp, but instead I get a value for the timestamp value that (I assume) is UTC. When I probe output of timestamp, or the output of cluster, it seems OK. However to estimate the number of timestamp, it is always disabled by what looks like the difference of the DST and time zone (exactly 5 hours).

  I tried two different methods and find the same results.

  (1) out of ' Get Date/Time ' function directly (which specifies the timestamp will be universal time in its contextual help file)

  and

  (2) convert the timestamp in a cluster and reconvert it timestamp (as pictured).

  In the example attached photo, notice the cluster result (probe 25) shows the correct time (16) when broken down and the probe of timestamp (26) seems correct.

  However, when the timestamp of the function "get Date/Time" or function "Date/Time seconds to" is converted to U32, changes of time what time looks like UTC as the timestamp 3485539686 (probe 28) has the offset of 5 hours (21 as shown in Excell sheet calculations included in the image).

  I'm not simply subtract 18 000 seconds to account for this difference (as DST or time zone changes may cause problems). I would like to than the actual time of the PC to use for the generation of table.

  How can I do this?

  Why do the probe points show the time system correct, but just after the timestamp is converted to U32 it resembles the UTC?

  You can use GetTimeZoneInformation to get through the time stamp and add/subtract out.  It's not like I had to code that WinAPI evoke yet, so I can't provide for you.  The return value indicates also advanced.

  You can also take your timestamp as you did and convert the cluster and return to determine the offset.  I've only done a few testign base with this, so don't know if it works in all use cases.  The WinAPI method would be the most robust.

  

  This completes actually missed the date upward, but returns the correct offset.

• timestamp as conditions for loops

  Hi, I'm new to LabVIEW. I'm looking for help with my vi, which has some time a loop for waveforms (currently of a simulator) written in a text file. I want to run the conditional loop according to timestamps. I have the timestamp for the start time and the end time and the current time on my front and I wish for my time loop to run continuously until the present time = off time. I'm having a hard time finding an example of code for this operation (simple?), and I would really appreciate help. In the end, I want info stamp time to incorporate in my data file but not the priority now. As you can see my code is a mess right now.

  Use a timer past. Subtract the start time of the end time and the result of wire to the goal time of the timer has elapsed. The timer has elapsed will be in your loop. Boolean 'Elapsed time?' thread to your conditional control of the loop.

• now subtract the time constant of the stamp

  I thought it would be easy.

  I was expecting "Subtracted the time" to display the difference between "Fixed time" and "currently".

  While it of countdown minutes and seconds as planned, the hours indicator is several hours off the coast of the expected value.

  The date "subtracted the time' is 1903, so it's time zero stamping.

  So basically, how can I get the patch for montrer.sss?

  Here are some of the things I've tried:

  I tried the 24-hour format. I have tried most every properties button.

  I tried to adjust the indicator "Subtracted the time" relative time in the properties. But I had two problems related to the definition of this property.

  In 'Default Edit Mode', the selections of absolute time and Relative are grayed out. So I couldn't change it, if absolute time was that all two blue grayed out and highlighted.

  Then I switched to "Advanced Editing Mode", played with the format of time codes Relative, absolute and digital and all that seemed to be getting was a red LED when I tried different combinations of "Insert into String Format". I had to go back to 99% of the time. When I don't have no 'come back' it made no difference in the result.

  Do not use a timestamp indicator.  Use a regular digital indidcator and set the display of relative time format.