Comparing date format having hh:mm:ss:pm

Hi
In table the records are stored in this format
6/15/2010 1:20:12 PM (mm/dd/yyyy hh:mm:ss PM/AM)
I need to get the records having the date greater than 6/1/2008 00:00:00 AM
How can i get that
I tried the following trunc (dt)>= to_date('06/01/2008','mm/dd/yyyy' )
Please correct me in this query

smile wrote:
Hi
In table the records are stored in this format
6/15/2010 1:20:12 PM (mm/dd/yyyy hh:mm:ss PM/AM)
As VT pointed out, if you are storing that as a character string (varchar2), then that is very poor design.
If you are storing it as a DATE, then it is not stored in the format you suggest. It is stored in oracle's internal format for DATE. NLS_DATE_FORMAT controls how that internal format is presented in a result set.
I need to get the records having the date greater than 6/1/2008 00:00:00 AM
How can i get that
I tried the following trunc (dt)>= to_date('06/01/2008','mm/dd/yyyy' )
Please correct me in this queryThe answer depends on the data type in which you are storing the supposed date/time.

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Problem in loading 0calday infoobject date format through Flatfile in cube

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iam new to sql
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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).

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.
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JBO-26044: Error while getting estimated row count for view object
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package toystore.model.datatypes.common;
import java.io.Serializable;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import oracle.jbo.Transaction;
import oracle.jbo.domain.DataCreationException;
import oracle.jbo.domain.DomainInterface;
import oracle.jbo.domain.DomainOwnerInterface;
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* This custom datatype implements an immutable domain class that
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private String mDateAsString;
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mDate = new Date();
convertDateToStringFormat();
* Return the value of the expiration date as a java.util.Date
public Date getDateValue() {
return mDate;
* Allow expiration date to be constructed from two
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public ExpirationDate(String monthVal, String yearVal) {
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validate(val);
convertDateToStringFormat();
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* datatype to map to a VARCHAR column in the database, we return the
* string format of the date
public Object getData() {
return mDateAsString;
* <b>Internal:</b> <em>Applications should not use this method.</em>
public void setContext(DomainOwnerInterface owner, Transaction trans, Object obj) {
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* in the format of MM/YYYY. Note that in the process of testing whether
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* the private member variable mDate with the date value, so if the
* validate() method does not throw an exception, the mDate will be setup.
protected void validate(String val) {
if (val != null) {
if (val.length() != 7 ||
val.charAt(2) != '/' ||
!isAllDigitsExceptSlashAtPositionTwo(val) ||
!isValidMonthAndYear(val)) {
throw new DataCreationException(ErrorMessages.class,
ErrorMessages.INVALID_EXPRDATE,
null,null);
* Returns true if all digits except position 2 (zero-based) are digits
private boolean isAllDigitsExceptSlashAtPositionTwo(String val) {
for (int z=0, max = val.length(); z < max; z++) {
if (z != 2 && !Character.isDigit(val.charAt(z))) {
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int year = Integer.parseInt(val.substring(3));
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c.set(year,month-1,1); // Month is zero-based !
mDate = c.getTime();
catch (IllegalArgumentException i) {
return false;
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mDateAsString = sdf.format(mDate);
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return mDate.compareTo(new Date())> 0;
* Compare the Expiration Dates by comparing their respective
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public boolean equals(Object obj) {
if (obj instanceof DomainInterface) {
Object thisData = getData();
if (thisData != null) {
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I'm having a brain fart as I assume this is really simple.
Given that I have the date in the format of yyyy/mm/dd, how
do I put that
into a sql query that compares that to the datetime field?
It appears the datetime field, by default, uses this format:
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-Darrel

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or CONVERT
functions as you state you already have. If this works then
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You may also need to use a SET DATEFORMAT command. See below:
http://msdn2.microsoft.com/en-us/library/ms189491.aspx
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is usually best
practice to store your DateTime data in raw format and use
CAST or CONVERT
functions in your Stored Procs to get the correct results.
Pat.
"darrel" <[email protected]> wrote in message
news:ftloim$jv4$[email protected]..
>
>> What dbms?
>
> t-sql (MSSQL)
>
> For now, via string functions, I rearrange the date/time
format manually,
> and then use the CAST statement in the SQL query. Not
pretty, but seems to
> work.
>
> -Darrel
>

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Comparing date format having hh:mm:ss:pm

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