How to compare strings ignoring accents?

Hi all,
I'd like to know, how can I compare 2 strings, ignoring accents.
i.e.: caf? should be come before cafo, and caf? should be considered the same word as cafe
Message was edited by:
Valeriano

hint: strength
import java.text.*;
import java.util.*;
public class CollatorExample {
    public static void main(String[] args) {
        test(Collator.PRIMARY, "PRIMARY");
        test(Collator.SECONDARY, "SECONDARY");
        test(Collator.TERTIARY, "TERTIARY");
        test(Collator.IDENTICAL, "IDENTICAL");
    static void test(int strength, String strengthName) {
        Collator c = Collator.getInstance(Locale.FRENCH);
        c.setStrength(strength);
        System.out.println(strengthName + " : " + c.compare("caf?", "cafe"));
}

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Darryl.Burke wrote:
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1     2     Math,Law,Business,Social,Language arts,History
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Thanks.
Edited by: user7988 on Sep 25, 2011 8:45 AM

user7988 wrote:
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         2                    3 Language arts,History
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SQL> Prior to 11.2 you can create your own string aggregation function STRAGG - there are plenty of example on this forum. Or use hierarchical query:
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with t1 as (
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                                            connect by level <= length(regexp_replace(student_subject_list || ',','[^,]'))
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         1                    2 Math,Law,Business,Social,Language arts,History
         1                    3 Language arts,History
         1                    4 Science,History
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         2                    5 Math,Language arts,History
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         3                    5 History,Language arts
         4                    5 History,Science
10 rows selected.SY.

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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).

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