String comparision issue

Good morning folks,
I want to take basically month and year of sysdate and compare with month and year of field in database and compare them.
But it is not working.
select case when
(concat(TO_CHAR(sysdate, 'MM'), to_char(sysdate,'YYYY')) >
concat(to_char(max(as_of_date),'MM'), to_char(max(as_of_date),'YYYY'))) then 'Not Archived'
else 'Archived' end from historical_advs_curr_eom
can someone suggest me any other better way of doing?
May be I shouldn't convert sysdate to string?
Thanks much folks.
regards
nathan

user12131044 wrote:
May be I shouldn't convert sysdate to string?Exactly. A string is not a date. Nor a number. So comparisons using strings do not behave like comparisons using dates and numbers.
Always try and use data in its native format - do not convert it into another data type as that data type will often behave differently and not provide the expected answer.
It is also not a good idea from a performance perspective. If you have an index or a number columns, the index value is numeric. If you now do a conversion of the column to a string and compare using that, it renders that index that contains numbers and not strings, useless.
Conversion also is an overhead - especially when it needs to be applied to every single row that the SELECT statement hints.
So rather stick to the native data type of that column. It is a lot more sensible.

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Hi Pullaro!
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Hello, everyone.
i am having a problem with string comparision.
for example, the input file is:
each line is an input line (string)
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LabVIEW Champion . Do more with less code and in less time .

String Concatenation issue

Hi all,
I have a simple query which concatenates three columns together, separated by a comma. Something like...
SELECT FK_COMMUNITY||', '||FK_BUILDING_ID ||', '|| FK_ROOM_TYPE AS preference
FROM preferences;
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The problem is the output leaves the formatting off example:
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Avery Hill, ,
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So in general you need to:I'd prefer to use XMLCAST (where it is supported) - or maybe sometimes EXTRACTVALUE :
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union select 2, null, 'DEV', null from dual
union select 3, null, 'DEV', null from dual
union select 4, null, 'CUT', null from dual
union select 5, null, 'CUT', null from dual
union select 6, null, 'BIN', 'BINSTA' from dual
union select 7, null, '<MMA>', 'MMASTE' from dual
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union select 9, null, 'MMS', 'MMSSTU' from dual
select xmlcast(xmlquery('string-join(./*,",")' passing xmlforest(fk_community, fk_building_id, fk_room_type) returning content) as varchar2(100)) str
from prefences
STR
Avery & Hill
TUD
DEV
DEV
CUT
CUT
BIN,BINSTA
<MMA>,MMASTE
BIN
MMS,MMSSTU
10 rows selected.

Please help me to solve this date comparision issue..

Please help me to solve this issue..
If i have some data like the following..
ID START DATE END DATE
1 20080101 20080501
1 20080502 20080630
2 20080631 20080801
2 20080802 20080901
 ---------------> There is a break in date over here
2 20080930 20081029
2 20081030 20081130
I need to compare the End Date with the start date (These data will not be in order)
and find out if there is any break and should get the output date : *20080930*
I am trying to do this in SQL or PL/SQL.Please help me .
Thanks in advance.
phani

Hi Frank ,
Sorry to bug you again. I ran your code on my actual data but not gettting the expected output.Here i am posting the actual code and the output that i got when i ran your code.Please bear with me and help me to solve this..
/* Formatted on 5/25/2009 2:27:24 PM (QP5 v5.115.810.9015) */
SELECT member_nbr,
 aff_nbr,
 ymdeff,
 ymdend,
 gap_before,
 COUNT (gap_after)
 OVER (PARTITION BY member_nbr, aff_nbr ORDER BY ymdend DESC)
 AS gap_cnt
FROM (SELECT member_nbr,
 aff_nbr,
 ymdeff,
 ymdend,
 CASE
 WHEN ymdeff >
 LEAD(ymdend)
 OVER (PARTITION BY member_nbr, aff_nbr
 ORDER BY ymdend DESC)
 + 1
 THEN
 1
 END
 AS gap_before,
 CASE
 WHEN ymdend <
 LAG(ymdeff)
 OVER (PARTITION BY member_nbr, aff_nbr
 ORDER BY ymdend DESC)
 - 1
 THEN
 1
 END
 AS gap_after
------------I need this SQL to filter the whole data to the data that i posted in previous post -----
 FROM ( SELECT ms1.member_nbr,
 ms1.aff_nbr,
 ms1.ymdeff,
 ms1.ymdend,
 ms1.void
 FROM (SELECT ms.member_nbr,
 ms.aff_nbr,
 ms.ymdeff,
 ms.ymdend,
 ms.void
 FROM MEMBER mb, member_span ms
 WHERE mb.member_nbr = ms.member_nbr
 AND (20090523 BETWEEN ms.ymdeff
 AND ms.ymdend
 AND TRIM (void) IS NULL)
 AND mb.member_nbr = 'A1000073000 ')
 eff_pcp,
 member_span ms1
 WHERE ms1.member_nbr = eff_pcp.member_nbr
 AND (SUBSTR (eff_pcp.aff_nbr, 1, 6) =
 SUBSTR (ms1.aff_nbr, 1, 6))
 ORDER BY ms1.ymdeff DESC)
---------- end of my part ----------
 table_x) got_gaps;Outputs that i got when i ran that code for each individual members..
Sorry to bug you frank and thanks for all the help.I will post here if i get any other data.
Thanks
phani

Using StartsWith for String Comparision in Business rules

hi,
I need to compare whether a particular string starts with some pre-defined prefixes. These are bound to change from time to time and hence we wanted to use the business rule engine for this. We declared prefixes using "list of values" vocab and
defined the set. Now, I hoped to use the String.StartsWith() method but couldn't understand if it can be used.
As of now, we are creating a method and that will be called with 2 parameters. One the string and other is one of the list of values which we want the string to start with. Is there any better way to do this?
Praveen Behara
MCST : BizTalk Server 2006 R2, 2010

Hi Murugesan,
I need to match a particular series of numbers... say 12xxx,345xxx,567xxx. I am creating a
Series as a list and the valid values would be 12, 345, 567. I intend to keep them as prefixes i.e. they are not regular expressions. So, they won't be 12.*, 345.*, 567.*. The idea is to keep the vocab close to requirement
and away from implementation (typically, for a business user). Now, if I want this setup, how will the implementation with
Match look like?
Technically, your above solution would work.. but my way of implementation / thought process is for a different purpose.
Praveen Behara
MCST : BizTalk Server 2006 R2, 2010

Program for string comparision in ABAP

Hi,
I require a program in abap for string comparision

Comparing Strings
Similarly to the special statements for processing strings, there are special comparisons that you can apply to strings with types C, D, N, and T. You can use the following operators:
<operator>
Meaning
CO
Contains Only
CN
Contains Not only
CA
Contains Any
NA
contains Not Any
CS
Contains String
NS
contains No String
CP
Contains Pattern
NP
contains No Pattern
There are no conversions with these comparisons. Instead, the system compares the characters of the string. The operators have the following functions:
CO (Contains Only)
The logical expression
<f1> CO <f2>
is true if <f1> contains only characters from <f2>. The comparison is case-sensitive. Trailing blanks are included. If the comparison is true, the system field SY-FDPOS contains the length of <f1>. If it is false, SY-FDPOS contains the offset of the first character of <f1> that does not occur in <f2> .
CN (Contains Not only)
The logical expression
<f1> CN <f2>
is true if <f1> does also contains characters other than those in <f2>. The comparison is case-sensitive. Trailing blanks are included. If the comparison is true, the system field SY-FDPOS contains the offset of the first character of <f1> that does not also occur in <f2>. If it is false, SY-FDPOS contains the length of <f1>.
CA (Contains Any)
The logical expression
<f1> CA <f2>
is true if <f1> contains at least one character from <f2>. The comparison is case-sensitive. If the comparison is true, the system field SY-FDPOS contains the offset of the first character of <f1> that also occurs in <f2> . If it is false, SY-FDPOS contains the length of <f1>.
NA (contains Not Any)
The logical expression
<f1> NA <f2>
is true if <f1> does not contain any character from <f2>. The comparison is case-sensitive. If the comparison is true, the system field SY-FDPOS contains the length of <f1>. If it is false, SY-FDPOS contains the offset of the first character of <f1> that occurs in <f2> .
CS (Contains String)
The logical expression
<f1> CS <f2>
is true if <f1> contains the string <f2>. Trailing spaces are ignored and the comparison is not case-sensitive. If the comparison is true, the system field SY-FDPOS contains the offset of <f2> in <f1> . If it is false, SY-FDPOS contains the length of <f1>.
NS (contains No String)
The logical expression
<f1> NS <f2>
is true if <f1> does not contain the string <f2>. Trailing spaces are ignored and the comparison is not case-sensitive. If the comparison is true, the system field SY-FDPOS contains the length of <f1>. If it is false, SY-FDPOS contains the offset of <f2> in <f1> .
CP (Contains Pattern)
The logical expression
<f1> CP <f2>
is true if <f1> contains the pattern <f2>. If <f2> is of type C, you can use the following wildcards in <f2>:
for any character string *
for any single character +
Trailing spaces are ignored and the comparison is not case-sensitive. If the comparison is true, the system field SY-FDPOS contains the offset of <f2> in <f1> . If it is false, SY-FDPOS contains the length of <f1>.
If you want to perform a comparison on a particular character in <f2>, place the escape character # in front of it. You can use the escape character # to specify
characters in upper and lower case
the wildcard character "" (enter # )
the wildcard character "" (enter # )
the escape symbol itself (enter ## )
blanks at the end of a string (enter #___ )
NP (contains No Pattern)
The logical expression
<f1> NP <f2>
is true if <f1> does not contain the pattern <f2>. In <f2>, you can use the same wildcards and escape character as for the operator CP.
Trailing spaces are ignored and the comparison is not case-sensitive. If the comparison is true, the system field SY-FDPOS contains the length of <f1>. If it is false, SY-FDPOS contains the offset of <f2> in <f1> .
DATA: F1(5) TYPE C VALUE <f1>,
 F2(5) TYPE C VALUE <f2>.
IF F1 <operator> F2.
 WRITE: / 'Comparison true, SY-FDPOS=', SY-FDPOS.
ELSE.
 WRITE: / 'Comparison false, SY-FDPOS=', SY-FDPOS.
ENDIF.
The following table shows the results of executing this program, depending on which operators and values of F1 and F2.
<f1>
<operator>
<f2>
Result
SY-FDPOS
'BD '
CO
'ABCD '
true
5
'BD '
CO
'ABCDE'
false
2
'ABC12'
CN
'ABCD '
true
3
'ABABC'
CN
'ABCD '
false
5
'ABcde'
CA
'Bd '
true
1
'ABcde'
CA
'bD '
false
5
'ABAB '
NA
'AB '
false
0
'ababa'
NA
'AB '
true
5
'ABcde'
CS
'bC '
true
1
'ABcde'
CS
'ce '
false
5
'ABcde'
NS
'bC '
false
1
'ABcde'
NS
'ce '
true
5
'ABcde'
CP
'b'
true
1
'ABcde'
CP
'#b'
false
5
'ABcde'
NP
'b'
false
1
'ABcde'
NP
'#b'
true
5
goto sap library if intsalled in ur system and check the above one....

String comparision in fields

HI All,
     I have a requirement to compare strings.
     Like this:
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I tried byte-cs but that i can only compare in terms of bytes and my text doesnot have zeros at the begining. and xstring pads zeros to the string to make it a full byte it seems.
how can i compare this ?

Hi,
Try to concatenate * in the beginning and in the end of the to be compared string before using CP..
Example
data: X1 type string.
X1 = 'Approve Parked document 100638133 initiated by USER123'.
data: X2 type string.
X2 = '100638133'.
CONCATENATE '' X2 '' INTO X2.
IF X1 CP X2.
write: / 'True'.
ELSE.
write: / 'False'.
ENDIF.
Thanks,
Naren
Message was edited by: Narendran Muthukumaran

String Comparision in pl/sql

Hi,
i executed the below code and found that output should be 5 but it shows 7(always else part). it is not comparing string in case. can anybody state the reason.
declare
check_in_date date;
var_day varchar2(11);
rate_id number;
begin
check_in_date := '23-mar-2013';
select to_char(check_in_date, 'DAY') into var_day from dual;
dbms_output.put_line(var_day);
select case
when VAR_DAY = 'SATURDAY' THEN
5
WHEN VAR_DAY = 'SUNDAY' THEN
6
ELSE
7
END
into rate_id
from dual;
DBMS_OUTPUT.PUT_LINE(rate_id);
end;
Thanks.
Vipin

Change this
select to_char(check_in_date, 'DAY') into var_day from dual;as
select to_char(check_in_date, 'fmDAY') into var_day from dual;You need to use the "fm" (format model) specificaton otherwise the value will be right padded with space for the max size.
SQL> select '"' || to_char(sysdate+level, 'DAY') || '"' without_fm,
2 '"' || to_char(sysdate+level, 'fmDAY') || '"' with_fm
3 from dual
4 connect by level <= 7;
WITHOUT_FM WITH_FM
"FRIDAY " "FRIDAY"
"SATURDAY " "SATURDAY"
"SUNDAY " "SUNDAY"
"MONDAY " "MONDAY"
"TUESDAY " "TUESDAY"
"WEDNESDAY" "WEDNESDAY"
"THURSDAY " "THURSDAY"
7 rows selected.

String comparision in reverse order

Hi all
i want a logic in plsql which compares string and substring
and soon from last digit in the number to first digit.
If condition mets gives out put
for example my input is
INPUT = 1234567890
TO COMPARE WITH a column has list of values like
1234560000
1234567000
1234567800....soon
so now the condition is
the input 1234567890 should match with the column value
1234567890
if value is not there it should match with
123456789
if not 12345678 soon till 1 in reverse comparision

In SQL:
SQL> ed
Wrote file afiedt.buf
1 with t as (select '123456' col1 FROM dual)
2 SELECT col1,inp,lvl FROM
3 (SELECT SUBSTR(:my_num,1,level-1) inp,level - 1 lvl FROM
4 dual CONNECT BY level <= LENGTH(:my_num)) x,t
5* WHERE t.col1 = x.inp
SQL> /
COL1 INP LVL
123456 123456 6
SQL> ed
Wrote file afiedt.buf
1 with t as (select '1234567890' col1 FROM dual)
2 SELECT col1,inp,lvl FROM
3 (SELECT SUBSTR(:my_num,1,level-1) inp,level - 1 lvl FROM
4 dual CONNECT BY level <= LENGTH(:my_num) + 1) x,t
5* WHERE t.col1 = x.inp
SQL> /
COL1 INP LVL
1234567890 1234567890 10
-- in plsql
SQL> ed
Wrote file afiedt.buf
1 declare
2 my_val VARCHAR2(100) := NULL;
3 BEGIN
4 FOR I IN REVERSE 1..LENGTH(:my_num) LOOP
5 DBMS_OUTPUt.PUT_LINE('substring value:'||SUBSTR(:my_num,1,I));
6 BEGIN
7 SELECT '123456' INTO my_Val FROM dual WHERE '123456' = SUBSTR(:my_num,1,I);
8 EXCEPTION
9 WHEN NO_DATA_FOUND THEN
10 NULL;
11 END;
12 EXIT WHEN my_Val IS NOT NULL;
13 END LOOP;
14 DBMS_OUTPUT.PUT_LINE('matched value:'||my_val);
15* END;
SQL> /
substring value:1234567890
substring value:123456789
substring value:12345678
substring value:1234567
substring value:123456
matched value:123456
PL/SQL procedure successfully completed.
SQL> print :my_num
MY_NUM
1234567890

String comparision

String a = "alpha";
String b = "xxxxalphayyyyyyy";
is there any method that returns true, if I had to check if String b contains a, otherwise false.....

What version of Java are you using?
edit: never mind, you got spoonfed in the meantime, I see
Edited by: georgemc on Jul 22, 2008 7:12 PM

String comparision issue

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