How to compare Date/time string

I read from datalog file including Date/time string ,and want to query the special Date/time string span ,how to compare the data/time string ?

Hello Joshua,
To compare date/time you have to extract the different components (day, month, year, hour, minute, second) anyway. Why not "convert to seconds"? I think it's easier to compare one number (where you also can do other math, like calc the difference and so on) than to compare seven (?) parameters with some exceptions... If the dates are read from excel (there was a similar thread some days ago), why not convert to seconds in excel (just a format change)?
Best regards,
GerdW
Best regards,
GerdW
CLAD, using 2009SP1 + LV2011SP1 + LV2014SP1 on WinXP+Win7+cRIO
Kudos are welcome

Similar Messages

How to compare date and time together

Hi,
How to compare Date and Time together?
For example in a database table there are two fields rundate and runtime. I want to compare these two with perticular date and time in the program. Like, I want to pull all the records where the records's date and time are less than a perticular date and time in the program.
Hope the question is clear...
Thanks.
Kavita

Hi Kavita
There is no as such Date and Time Comparision FM in Standard SAP But You can define your own like this
<b>FUNCTION ZAV4_COMPAREDATETIME.
""Lokale Schnittstelle:
*" IMPORTING
*"     REFERENCE(DATE1) TYPE DATS
*"     REFERENCE(TIME1) TYPE TIMS
*"     REFERENCE(DATE2) TYPE DATS
*"     REFERENCE(TIME2) TYPE TIMS
*" EXPORTING
*"     VALUE(TWOISMORETOPICAL) TYPE C
twoismoretopical = ''.
if date2 > date1.
    twoismoretopical = 'X'.
else.
     if date2 = date1 and time2 > time1.
       twoismoretopical = 'X'.
     endif.
endif.
ENDFUNCTION.</b>
Regards
Mithlesh

How to compare date which is greatest date

iam new to sql
how to compare date which date is greatest date with example
can i use to_char to compare date
SELECT eno, ename, GREATEST (TBLE.MAX1, TBLE.MAX2) recent_date "
               FROM (SELECT TBLA.eno, TBLA.ename, "
               MAX (TO_CHAR (TBL.date1, 'MM/DD/YYYY HH24:MI') "
               ) MAX1, "
               MAX (TO_CHAR (TBL.date2, 'MM/DD/YYYY HH24:MI') "
               ) MAX2 "
               FROM dual TBL, dual2 TBLA
in above query if any one of the date having null value then recent_date is showing 'null'
and also it showing wrong value
example
date1='08-22-2009' and date2='01-23-2010' then it showing wrong recent_datel ike='08-22-2009'
as according my knowledge it is comparing with month it sholud not be like this wat i have to do pls explain with example my o/p should come for recent_date like =''01-23-2010''
Edited by: user9112274 on Aug 27, 2010 5:31 AM

Hi,
there are numerous ways to compare dates, i give you some examples:
with data_Sample as
(select to_date('01-jan-2001','dd-mon-yyyy') d1, to_date('01-mar-2002','dd-mon-yyyy') d2, to_date('03-feb-2002','dd-mon-yyyy') d3 from dual)
select greatest(d1,d2,d3) from data_Sample
GREATEST(D1,D2,D3)
3/1/2002
with data_Sample as
(select to_date('01-jan-2001','dd-mon-yyyy') d1 from dual union all
select to_date('01-mar-2002','dd-mon-yyyy')   from dual union all
select to_date('03-feb-2002','dd-mon-yyyy') from dual)
select max(d1) from data_Sample
MAX(D1)
3/1/2002
declare
d1 date :=to_date('01-jan-2001','dd-mon-yyyy');
d2 date :=to_date('01-jan-2001','dd-mon-yyyy');
begin
if d1>d2 then
dbms_output.PUT_LINE('d1 greater than d2');
else
dbms_output.PUT_LINE('d1 less or equql than d2');
end if;
end;
output:
d1 less or equal than d2now concerning your question:
>
can i use to_char to compare date
>
If you have date data types : don't convert them.
if you have no choice, use something like:
if to_char(d1,'YYYYMMDD') > to_char(d2,'YYYYMMDD') then
else
end if;Take care when you convert a date into a char format it becomes string comparison (with all it implies) (It's the reason why i've use an explicit mask format).

Increment the number with date/time string. when ever the next date come's it should reset again with initial number

i want to store the number of records in a file. Every time when ever i run the program the record will be incremented well i using forloop with count value 1 as a constant .in the for loop i am using autoincrement with the feedback node . to view the number i have attached the indicatator .the number will be increment every time . i am using number to time time stamp that is connected to get date/time string. from that we can view the date string and time string . so , my issue is when ever i close the code again it is coming with intial value . i should get from that number only where ever i close the code . after the date completed again it should come from intial value . i am attaching the code so that u guys can solve my problem.
Attachments:
record.doc ‏34 KB

here you can see.......the file path in case structure in that i have included my requirement of increment the number
-> if the case is true then it goes in ok file path and the no of records string will pass in the file by seeing these code u will get the clarity
my requirement is the number of records should increase ........ whnever the program runs...that i made it. by the next day again it should begain with the intial value.........that is my requirement. i hope u understand .
suggest me how can i use the intial value .......
Attachments:
code.vi ‏35 KB

Problem converting U8 array to date-time string

Hi All,
How can I convert U8 array (time_t data type from C dll) to date time string?
A dll function that I am calling has a structure of string, integer and time_t as one of the parameters. Instead of passing cluster, I pass an array of U8 of the size that the structure should be. All the members of the strcuture and parsed correctly except the date/time.
Function Parameter:
typedef struct {
Int AlarmState ;
Int AlarmGrade ;
TCHAR AlarmMessage [100] ;
time_t AlarmTimeStamp ;
} WV_ALARM_INFO ;
Total size = 4 + 4 + 100 + 4 = 112
Using Call Library Function, I set the parameter type to Array of U8 and size 112.
After the array is populated when the function is called, I have done the following to interpret date and time.
1) Using Extract Zero Terminated String.VI I converted U8 array (of size 4) to string.
2) Type casted string to integer (I32).
3) Swap bytes
4) Swap Words
5) Format Date/Time String.
Please see the attached screenshot for visual display of the above.
Ideas on why the year is incorrect?
Mimansa
Attachments:
Time.JPG ‏102 KB

Hi Mimansa,
Is it only the year that is incorrect? Also, where did you find that ABC\0 VI that you use 3 times? Did you make it or is it in a labview library somewhere?
Thanks,
Laura

How to print date & time stamp on photos?

How to print date & time stamp on photos?

Three methods:
File>process multiple files>labels. Be sure to uncheck "same as source", or the originals will be overwritten. It is best to work on duplicate files, esp. while learning.
Use the horizontal or vertical type tool to add the information manually to each picture file
If the same information is to be applied to several pictures, e.g. a copyright notice, use of a brush made in PSE is very efficient

How to print date/time in report page footer?

Hi
I have a report which users can print as PDF.
However, I like to display current date/time in report footer.
I can see the Page Footer in section but can't figure out how to print date/time there.
Thanks for help.

hi movilogo
Please try this.
Create hidden item P1_DATE
Create On load process in page 1 and put this code
begin
:P1_DATE:=TO_CHAR(SYSDATE,'DD-MON-YYYY HH:MM:SS');
end;
Open your region in Page 1 put this code in Footer area
*&P1_DATE.*
Refresh your page.
you will get the output like this.
16-SEP-2009 11:09:17
thanks
Mark Wyatt

How to store date/time information in a channel?

Hello,
I'm logging manufacturing test data into TDM files from LabWindows CVI 8.0.
So far, I've organzied the data like:
one Channelgroup for each Measurement type
one Channel per DUT into eah Channelgroup
There is a new tdm file creatd each day.
For a later analysis, we want to able to easily search for all DUT's manufactured between Date/Time1 and Date/Time2 within all files.
Question:
What would be the most recommeded way to store the manufacturing date/time of the DUT with the channel?
I have assigned the channel name with a date/time string, - but it is kind of awkward to search for a range with string types.
Is there a better way?
Thanks,
Greg

Hi Greg,
Unfortunately, DIAdem Datafinder doesn't really support much in the way
of Date/Time search outside of the File Level Creation Date property.
In order to make the creation time of the Channels searchable you would
want to create some custom properties (or use the existing RegisterInt1
- RegisterInt6) to define your own searchable properties.
For example, since you know that you have one TDM file per day, you can
start your search by find the desired day on the File Property Level,
searching the "Creation Date" property. When you store your TDM
properties, you could store the hour creation as an integer (and
thereby searchable) in one of the RegisterInt properties of the
channel, or create your own custom "Hour" channel. You could similarly
save the minute and second property in their own custom properties.
Then, since you're saving integer values, you can then search those
values to determine the time that the channel was created.
I realize that this isn't ideal or elegant, as in total it requires 4
searches (date, hour, minute, second). But that is the most
straightforward way of searching your channels by creation date/time.
Hope this helps Greg, let me know if you have any other questions.
Dan Weiland

Date time string from UME-SPML interface

Hi,
I am using the UME-SPML interface to manage users in SAP UME and using AS ABAP user management as the user store for UME.
I have noticed a problem in the date time string returned in the SPML search response when I search for a user. When you search for a user, normally you get 3 date time strings for "validfrom", "validto" and "lastmodifydate".
These are what have been returned in the SPML response:
<attr name="lastmodifydate"><value>20101019030648Z</value></attr>
<attr name="validfrom"><value>20101019010000Z</value></attr>
<attr name="validto"><value>25001230010000Z</value></attr>
When I check the same user with the user management administration console, I get these:
Date of Account Creation: Oct 19, 2010 2:06:48 PM (Eastern Standard Time (New South Wales))
Start Date of Account Validity: Oct 20, 2010 12:00:00 AM (Eastern Standard Time (New South Wales))
End Date of Account Validity: Dec 31, 2500 12:00:00 AM (Eastern Standard Time (New South Wales))
The timezone I am in is GMT10 (Australia Eastern Standard Time (New South Wales)) and now we in day light saving so effectively we are in GMT11 now.
You can see that the datetime string for "lastmodifydate" correctly reflects what's shown on user management administration console.
But the datetime strings for "validfrom" and "validto" seems to get the conversion wrong: both seem to be using 12 hour format instead of 24 hour format. (2010 10 19 01 00 00Z should be 2010 10 19 13 00 00Z and 2500 12 30 01 00 00Z should be 2500 12 30 13 00 00Z)(I have put in a space in the string to break up the date time components)
Anyone has any idea what went wrong here?
Regards,
GG

Also search service.sap.com for the term "sy-zonlo".
Personally I am a member of the [flat earth society|http://en.wikipedia.org/wiki/Flat_Earth_Society] when it get to this topic, because it causes no end of problems.
Most customers simply stop operations on 31.12.xxxx or before, or alternately use reporting tools to make corrections afterwards.
In the security realm, SAP also respects server side timestamp tolerances (only a few seconds are allowed).
Time is server time in my books. Some people work late, others early - and there is nothing you can control to stop a customer in the US from placing an order via a system in Japan anyway.
Anyway, this is probably a program error with the 12 hour format in the component software or possibly the API interface to user management in your release so you should open a customer message with SAP (my best guess).
Cheers,
Julius

Week returned by Format Date/time String

Has anyone tested the Format Date/Time String function with the week formating codes?
I want to create a subfolder for each week and name the folder accordingly. For 17 December 2003 the week is 51 in the year 03 but I get week 50. For 29 December 2003 the week is 01 in the year 04 but I get week 52. For 01 January 2004 the week is 01 in the year 04 but I get week 00. For 29 December 2004 the week is 53 in the year 04 but I get week 52. For 01 January 2005 the week is 53 in the year 04 but I get week 00. There is no difference using %U or %W as code (this will be if 1 January will fall on Sunday or Monday which it does not in my examples).
I know normally a year has weeks 1 to 52 but in some years the last week may have week
53 as in 2004. Adding 1 to the week does not solve the problem. For 29 December 2003 it would give 53. And 53 maybe a correct week as in 2004. For 1 January 2005 it would give 1 but the week is the week in the year before.
All the week numbering I expect is correct for Germany but the function is not. Is the numbering from the function correct for your country?
Please reply where you are located and if the function will work right for you.
Waldemar
Waldemar
Using 7.1.1, 8.5.1, 8.6.1, 2009 on XP and RT
Don't forget to give Kudos to good answers and/or questions

I have found two resources about date and time and their formats.
One is the ISO Standard 8601, the second is a german page. On this page along with other information all definitions used by Windows is listed.
According to this page the ISO Standard has been established in Europe and most industrial countries. In USA it is ANSI X3.30-1985(R1991) and NIST FIPS 4-1.
Since the ANSI definition you mentioned allows only Sunday (Jewish) or Monday (Christian) as first day of the week it ignores the Islamic world. For them the first day is Saturday. I could not gather information about Buddhistic or Hinduism
based countries.
For my application and the market aimed the ISO format is the one which will be choosen. Using %W and handling of week 0 should do it.
Waldemar
Waldemar
Using 7.1.1, 8.5.1, 8.6.1, 2009 on XP and RT
Don't forget to give Kudos to good answers and/or questions

When I run this VI "Waveform Time to Date Time String" in LabView 7.0 it will not pass decimals of seconds.

When I run this VI "Waveform Time to Date Time String" in LabView 7.0 it will not pass decimals of seconds. From decimals of inputline. If i disconnect the input to the subVI "Get Date/Time string vi" it will work propperly, it also doses if I reconnect it. I use LabViev 7.0.
So the problem i solved, but i dosent understund why it works in this way. Does it indicate other problems which will make my researchprogram unrelaible ?
Attachments:
Waveform_Time_to_Date_Time_String.vi ‏18 KB

Hello.
I checked your vi and it fails as you state.
It runs fine if: 1 Convert number to timestamp OR
2 Wire a constant to want seconds?
In labview 7.1, no problems.
I think is a job for NI engeniers.
Hope it helps
Alipio
"Qod natura non dat, Salmantica non praestat"

Day of year bug - format date/time string and scan from string?

I've noticed that the day of year returned by "Format Date/Time String.vi" starts with a value of 1 for Jan-1 while "Scan from String.vi" wants a 0 index. Is this a bug or feature?
(I'm using Labview 2010 Service Pack 1)

I think the best idea is to use seconds since for your arithmetic, because it is going to be the most consistent and robust solution. Knowing that a day has 86400 seconds is all that is needed and you won't run in possible inconsistencies with date time implementations caused by our anything but logic calender. I would hazard that the functionality of converting a timestamp into year and day of year and back is impossible to make consistent without sacrificing other possibly conflicting transformation in the Timestamp into String and Timestamp from String manipulations.
"Seconds since" being the actual base unit in all LabVIEW timestamps, it is best to do any arithmetic on it in this base unit.
Rolf Kalbermatter
CIT Engineering Netherlands
a division of Test & Measurement Solutions

How to compare Date in the TextField or DateTime with Date/Time field?

Hi All,
I am facing an issue with respect Date comparinson. I tried to look into entire discussions but failed to get the answer.
My issue is: I wanted to comparet Date/time field value with Date value which is in TextField.
The functionality of my form is:
I have dropdown list which lists the registered customer ids binded to XML Datasource. On selection of the customer id from the dropdown I am displaying customer registration date in the TextField or say Date/Time field as below code in dropdown change event.
RegistrationDetails.PurchaseEntry.txtRegDate.rawValue = regDataNode.CREATION_DATE.value; (this is TextField control)
In form I have an Date/Time field in which use will select the date of item purchase. In the validation part I want to make sure that, the purchase date selected in Date/Time field must be greater than the Customer Registraiton Date. I able to compare if the customer selects the date from two different Date/Time fields. But how to compare the dates which one is in Date/Time field and Date is in TextField?
I have tried using Num2Date and Date2Num with "YYYY-MM-DD" format to compare but not succeed!
Can you guys help me in this? Thanks in advance
Regards.

Hi,
Yes, I am able to display the date which I have assigned to the text box. In the message box it show the value as '31/05/2009', since in this format i am assigining the date in the text box.
Here is the code which I am assigning the value:
RegistrationDetails.PurchaseEntry.txtRegDate.rawValue = regDataNode.CREATION_DATE.value;
Do I need to change the format while assigning value in text box?
You have told that, you have attached your test form, nothing is the reply. Can you repost the file?
Regards.

How to compare data from 2 different time periods

Hi folks,
I have a question on approach to a problem. I want to be able to compare data from a common db, but for 2 different time periods. For example I want to see the number of occurences of an instance in my data for today and compare it against occurences a week ago today. What's the best approach for this kind of problem? Is this done with 2 separate queries from 2 sub reports and then compared some how? Any comments on this approach or an other are appreciated.
TIA bvd

Follow these steps:
1) Bring your first time period in your main report. This will be your first query.
2) Bring your second time period in a subreport. This will be your second query.
3) Bring the values from your subreport into your main report using shared variables.
4) Lastly, compare the results using formulas in your main report.
I hope this information proves useful.
Regards,
Zack H.

How to compare date with char

hi
i am having date from and date to feilds in my overtime element.i want to do the validation on these dates the the dates do not overlap or duplicated.the input value date from and date to are stored in database as varchar2 in the format yyyy/mm/dd 00:00:00. Now if i am trying to compare entered date with these dates i am getting literal does not match format string or date picture ends before....Can any body tell me what to do.
Regards

user10502390 wrote:
hi
i am having date from and date to feilds in my overtime element.i want to do the validation on these dates the the dates do not overlap or duplicated.the input value date from and date to are stored in database as varchar2 in the format yyyy/mm/dd 00:00:00. Now if i am trying to compare entered date with these dates i am getting literal does not match format string or date picture ends before....Can any body tell me what to do.
RegardsPoint a) VERY BAD IDEA storing dates as VARCHAR2 on the database. It will only lead to corrupt data in the future.
Point b) When comparing dates, you should compare them as DATE datatype as the database knows how to do comparisons against DATES. If you try and compare them as VARCHAR2 then you will most likely end up with incorrect comparisons.
If you must have varchar2 storing of your dates/times (there's absolutely no reason to though)... you want...
TO_DATE(:entered_date,'YYYY/MM/DD HH24:MI:SS') BETWEEN TO_DATE(DATEFROM,'YYYY/MM/DD HH24:MI:SS') AND TO_DATE(DATETO,'YYYY/MM/DD HH24:MI:SS')
e.g.
TO_DATE('20080815 13:23:33','YYYY/MM/DD HH24:MI:SS') BETWEEN TO_DATE(DATEFROM,'YYYY/MM/DD HH24:MI:SS') AND TO_DATE(DATETO,'YYYY/MM/DD HH24:MI:SS')

How to compare Date/time string

Similar Messages

Maybe you are looking for