Date string comparison
I have a text file which has a date when a test was completed with the following format: 3/15/2004. If given a range of dates say 2/4/2004 - 5/6/2004, how do you compare the date string in the file to determine if it is in the date range given?
Thanks
Another option would be to convert the date to LV time format which you can compare immediately. Basically, you convert the different parts to numbers and then use a combination of string and time functions to convert. You can see an example for part of this here.
Try to take over the world!
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Similar Messages
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Revision: 18053
Revision: 18053
Author: [email protected]
Date: 2010-10-07 03:27:37 -0700 (Thu, 07 Oct 2010)
Log Message:
BLZ-571: Use of wrong operator in string comparison in flex.messaging.VersionInfo.java
Updated the code to use the right operator.
Check-in Tests: PASS
QA: Yes
Ticket Links:
http://bugs.adobe.com/jira/browse/BLZ-571
Modified Paths:
blazeds/trunk/modules/core/src/flex/messaging/VersionInfo.java -
I am selecting data from a Progress database using the Data Direct Open Edge 10.1.B driver. The target table stores the date values as varchar in this format "22-OCT-14" In the select statement I can use Progress statements or T-SQL to transform
the varchar to a date - but cannot do the same in the WHERE clause
Select po_number, cast(po_date as date) as [po_date] from [po_table]
(no problem - the [po_date] field stored as "22-OCT-14" is returned as "2014-10-22 00:00:00"
but when I include the cast in the where clause I get the error described in the title
Select [po_number], [po_date] from [po_table WHERE cast([po_date] as date)<= '10/22/2014' - NO GOOD
I have tried very many combinations of the date string format , different functions and sub-queries but cannot find an answerThe sql strings I posted are working examples - I've tried the ISO format you included - any number of date formats will work when the target field is a "Date" field - but trying any kind of transform statment to processa date stored
as a varchar in the WHERE CLAUSE throws the erro
Storing dates in a varchar column is a bad idea on any platform. Apparently there are strings in that column which cannot be converted to dates.
On SQL Server you could have found this with
SELECT po_date FROM po_table WHERE isdate(po_date) = 1
What you should use on Progress, I have no idea.
Erland Sommarskog, SQL Server MVP, [email protected] -
I am running the following select statement into Oracle SQL Developer.
Select I_NOTE_DESIGS.END_DATE AS ENDDATE
However in my results the date hows as 01-APR-29.
I was wondering if there is a way to convert this over to another date string ie: I would like the date in this column to show 2029-04-01. I am not bothered if the time comes out at the end, as I have a program which can delete that.
Regards,
Jon Ditchfield>
Hi Jon, and welcome to the forums.
I was wondering if there is a way to convert this over to another date
string ie: I would like the date in this column to show 2029-04-01.
I am not bothered if the time comes out at the end, as I have a program which can delete that.select to_char(to_date('01-APR-29', 'dd-MON-YY'), 'yyyy-mm-dd') from dual;
select to_char(to_date('01-APR-29', 'dd-MON-YY'), 'yyyy-mm-dd hh:mm:ss') from dual;
Please be sure to read the forum FAQ. Also, read the "sticky" thread by BluShadow at the
top of the list of posts on the forum home page.
Always give your version of Oracle - the answer can vary greatly with version - although
not in this case.
These forums are a great resource - you will get the maximum benefit from them
if you follow the guidelines.
HTH,
Paul...
Jon Ditchfield -
How do I find the frequency of numbers in a group of data strings?
I have a set of data strings and I want to find the frequency of each number occuring in a data string. How do I do this?
Here are the strings.
28-29-43-51-53 7
02-08-30-36-48 31
09-10-27-36-42 11
20-24-31-33-36 44
16-29-48-52-54 5
06-15-29-39-51 36
01-16-18-25-27 3
09-30-39-42-47 37The first part is to "break out" the values from your strings. Columns B thru G take care of this:
I assumed allvalues as 2 digits...
B2=VALUE(MID($A2, 3*(COLUMN()-2)+1, 2))
select B2 and fill to the right until column G
then select B2 thru G2 and fill down as needed.
For compactness of THIS presentation I added two additional columns for getting the Frequency... columns I and J.
Column I contains an counting value and J contains the frquency of the corresponding value in I (of the same row).
put a "1" in I2, a "2" in I3, then select both I1and I2, then grab (click and hold the little circle at the bottom right of the selection), and drag down until the value is the max number you expect (I assumed it was 99).
J2=COUNTIF(B:G, "="&I2)
select J2 and fill down -
Reading a flattened LabVIEW data string from a CSV file in C#?
We're recording a large amount of data into a CSV file to make it easily accessible from the C# end. I've a header with all the variable names then I write all the data (doubles) as flattened LabVIEW binary strings using flatten to string (little endian) to keep the size down. We are having issues converting these strings back to doubles on the C# end.
At the C# end we can read the LabVIEW repesentation of the DBL but have tried the BitConverter.ToDouble library function to convert it without luck. We use this method to convert the same flattened data coming over a TCP connection without any problems. I'm not writing the C# part of the program and have little experience with it, but if anyone could shed some light, it would be greatly appreciated.
Regards,
AndrewIt is all written as single values. It looks like we have found a method if we remove the header which contains the variable name as a string so the data is in a csv containing just the binary data strings. It looks like we'll go with this as the data will always be written in the same order so can be indexed by the C# program without the need for headers.
Thanks. -
I want to take a series of hex characters in a string control and produce an HDLC string indicator for example if the data string control is 3F27 then the HDLC string indicator is 7E003F2700B57E
"thanks for your help "
Does that mean you figured it out already?
If not, see this thread for some HDLC related code.
http://forums.ni.com/ni/board/message?board.id=170&message.id=146859&query.id=3388#M146859
Ben
Ben Rayner
I am currently active on.. MainStream Preppers
Rayner's Ridge is under construction -
What is a Token Data String and how do I create one?
How do I create local server scripts? I have read Chapter 2, what is a data string, how do I 'create' one and how can I 'pass' this off Apple, iTunes, whoever needs it? Chapter 2 doesn't say.
Gateway Windows XP Pro MilitaryI suggest that you grab a copy of Chapter 4 of the Admin document. It explains a lot. You should also grab a copy of Apple's sample scripts (you get some C code, Java, Perl, Python, and a shell script). They will give you some idea of how this works. The scripts are downloadable frmo the iTunes U support page.
Basically, the token string contains a credential that says what access you'd like to have in iTunes U (you are an "Admin" user or a "Student" or an "Instructor" say). The credential encodes what you can view/edit in a standard way. The credential also includes some optional info (like your identity, e-mail address ... a "user identifier" which is typically a number ... say if you identify users by numbers and names ... and other stuff). You then slap on a timestamp on the credential and cryptographically encode it with that shared secret Apple sent you (when I say "you," I mean that funky CGI you've written ... your CGI does all the encoding). When you're done with the token string, you slap it on the end of a site URL (again, this is something Apple sent you) and send it to Apple. This way, you ('er, your CGI) does all the authentication for Apple (because you know how to authenticate your users better than Apple ever will).
I confess I had to read Apple's documents, oh, like twenty times before I figured all this stuff out. Once you get it though, it will seem like a pretty cool system.
MacBook Pro Mac OS X (10.4.8) I lied. I'm running Leopard -
How to set a date string in a textbox which bind to a Date type datasource
Hi,
I found i can't set a default date value in a textbox which bind to a Date type datasource. Even i tried copying a date string which is picked by the calendar date picker and copy the exactly same string into my source code. It just doesn't work and gives me error said "Invalid date value".
My source code is like this:
oEditText = (SAPbouiCOM.EditText)oItem.Specific;
oEditText.DataBind.SetBound(true, "", "dtFrom");
oEditText.Value = "09/08/2010"; //DateTime.Now.ToString("dd/MM/yyyy");
Any suggestion?
Thanks!
LanHi,
oItem = oForm.Items.Item("10")
oEdit = oItem.Specific
oEdit.String = Format(Today.Date, "dd/MM/yyyy")
or
datestring = oForm.Items.Item("10").Specific.value
datepass = Left(datestring, 4) & "/" & Mid(datestring, 5, 2) & "/" & Mid(datestring, 7, 2)
dtDocDate = Date.Parse(datepass)
Thanks,
Mahesh -
How to convert server specific date string into client specific date object
Hi developers,
I have a very complex issue to convert the server date string format "EEE MMM dd HH:mm:ss z yyyy" into java.util.Date object and find the difference of the client machine date to represent the elapsed time
The problem is the server time zone and client time zone are not unique and when I try to covert the server date which is in string format to date format using SimpleDateFormat class , I got the server time as 3:30 hours appended to it. The server time zone is in IST and Client time zone format is GMT+5:30 , the appended time of 3:30 hours created the confusion in calculating the elapsed time between the server started time and client requested time
I went through all the sites but none of them were useful
If any help to solve the above issue is appriciated
please send the response with the same subject line
Advance ThanksWhy don't you just subtract from the server time the 3:30 hours (consult api of java.util.date) before comparing with the client date? Hard to see where's the problem...
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Validation For Date,String and Date in a reports Region
Apex 4
Good day to all apex users How do I validate a apex_item.text if the value is string the user can only input a string value if it is number then the user can input numbers only and if it is a date the user can only input a date values?APEX_ITEMS are not part of the default apex gui... In fact they are just functions which returns html.
You can however do some stuff with the attributes parameters. You can find some cool stuff over here: Re: Validation For Date,String and Date in a reports Region
If you want apex validation you need to create a page validation and loop over your apex_items with apex_application.g_f0x
Br,
Nico -
Converting any date string to GMT standard
Hi All,
I want to convert any date string to GMT standard.
The date string may be like this.
"Sat Sep 15 14:23:40 IST 2001"
I have tried to change my defaultTimeZone .
But I don't know why it's not working.
Is there something to do with Locals?
Can anyone please tell me the way to
accomplish that ?
Thanks in advance.
SujoyJava stores all the dates in GMT Format , considering the machines TimeZone Setting ....and also i guess date has methods like toGMTString() and toLocaleString() . To convert the date to GMT i guess u can just say toGMTString() of the date . If u have the stringified version of date
just make a new Date(String) and then calling toGMTString of it . -
I need to parse a bunch of date strings in 'UTCG' format (whatever that really means).
They all look like:
1 Jan 2001 00:00:00.00
I can't figure out which of the Java date formats parse this. I've tried many varients of:
DateFormat.getTimeInstance(DateFormat.MEDIUM,Locale.GERMANY)
without success.
Help!!!!Here is a bit of info from the API doc - notice in the first paragraph it talks about the Date object, format seems similar. At the bottom of info is the Short, Long, etc, format tyoes, check those out... - Bart
public abstract class DateFormat
extends Format
DateFormat is an abstract class for date/time formatting subclasses which formats and parses dates or time in a language-independent manner. The date/time formatting subclass, such as SimpleDateFormat, allows for formatting (i.e., date -> text), parsing (text -> date), and normalization. The date is represented as a Date object or as the milliseconds since January 1, 1970, 00:00:00 GMT.
DateFormat provides many class methods for obtaining default date/time formatters based on the default or a given locale and a number of formatting styles. The formatting styles include FULL, LONG, MEDIUM, and SHORT. More detail and examples of using these styles are provided in the method descriptions.
DateFormat helps you to format and parse dates for any locale. Your code can be completely independent of the locale conventions for months, days of the week, or even the calendar format: lunar vs. solar.
To format a date for the current Locale, use one of the static factory methods:
myString = DateFormat.getDateInstance().format(myDate);
If you are formatting multiple dates, it is more efficient to get the format and use it multiple times so that the system doesn't have to fetch the information about the local language and country conventions multiple times.
DateFormat df = DateFormat.getDateInstance();
for (int i = 0; i < a.length; ++i) {
output.println(df.format(myDate) + "; ");
To format a date for a different Locale, specify it in the call to getDateInstance().
DateFormat df = DateFormat.getDateInstance(DateFormat.LONG, Locale.FRANCE);
You can use a DateFormat to parse also.
myDate = df.parse(myString);
Use getDateInstance to get the normal date format for that country. There are other static factory methods available. Use getTimeInstance to get the time format for that country. Use getDateTimeInstance to get a date and time format. You can pass in different options to these factory methods to control the length of the result; from SHORT to MEDIUM to LONG to FULL. The exact result depends on the locale, but generally:
SHORT is completely numeric, such as 12.13.52 or 3:30pm
MEDIUM is longer, such as Jan 12, 1952
LONG is longer, such as January 12, 1952 or 3:30:32pm
FULL is pretty completely specified, such as Tuesday, April 12, 1952 AD or 3:30:42pm PST. -
I really want that oracle can change their command parser engine to be smart enough especially for date string parsing.
currently the engine will throw error when we type a date string as (for example) '10/10/10', while this command can be accepted in MS-SQLServer.AMaster wrote:
i have stored three numbers in three different variables and want to join all of them to concatanate:
http://docs.oracle.com/cd/B19306_01/server.102/b14200/operators003.htm
make a date string , kindly help me with this.
Edited by: AMaster on Sep 6, 2012 4:12 AMto_date:
http://docs.oracle.com/cd/B19306_01/server.102/b14200/functions183.htm
How to ask a question:
SQL and PL/SQL FAQ -
Hi
How would i go about parsing some date strings in DD/MM/YYYY
format into a date objects. I am sure its an easy problem but i
cant find a simple way to do it as most of the API's want it a
differnt format like MM/DD/YYYY
Thanks for any helpHi,
in the actionscript 3.0 cookbook there is a class DateFormat
described, which allows to parse strings to date objects.
You can download the code of the dateformat.as from here .
http://www.rightactionscript.com/ascb/
best regards,
kcell
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