Week function gives wrong result for last week in year

Week(CreateDate(2011,12,25)) returns 51 - correct
Week(CreateDate(2011,12,26)) returns 53 - wrong
It looks like all last weeks of the year are 53 whereas the next year with 53 weeks should be 2015.
See http://tuxgraphics.org/toolbox/calendar.html for example.
I am running CF9 on Windows 7 with Java V6 update 29.
This is causing me a problem. Any ideas for a workaround?
Doug

Here is my general solution for my cfc which seems to work for all dates up to 2100 at least.
Hope it can help if you need a Week function to replace the CF one.
<cffunction name="getISOWeekNum" access="public" returntype="Numeric" hint="Gets ISO week number in which date occurs.">
 <cfargument name="date" type="date" required="true" hint="Date for which you wish to know the week number">
 <cfset var weeknum = 0>
 <cfset var isLeap = isLeapYear(Year(date))>
 <cfset var dayInWeek = dayOfWeek(date)>
 <cfset var isoDayOfWeek = iIf(dayInWeek GT 1, dayInWeek - 1, 7)>
 <cfset var nearestThur = dateAdd("d", 4 - isoDayOfWeek, date)>
 <cfset var fourthDayOfYear = createDate(year(nearestThur), 1, 4)>
 <cfset var fourthDayInWeek = dayOfWeek(fourthDayOfYear)>
 <cfset var fourthIsoDayOfWeek = iif(fourthDayInWeek GT 1, fourthDayInWeek - 1, 7)>
 <cfset var firstThur = dateAdd("d", 4 - fourthIsoDayOfWeek, fourthDayOfYear)>
 <cfset var lastWeek = iIf(fourthDayInWeek EQ 8 OR (isLeap AND fourthDayInWeek EQ 7), 53, 52)>
 <cfset var firstIsoDayOfFirstWeek = dateAdd("d", -(fourthIsoDayOfWeek-1), fourthDayOfYear)>
 <cfset var firstIsoDayOfLastWeek = dateAdd("d", -7, firstIsoDayOfFirstWeek)>
 <cfset var lastIsoDayOfFirstWeek = dateAdd("d", 6, firstIsoDayOfFirstWeek)>
 <cfset var weekDiff = iIf(dateCompare(date, firstIsoDayOfFirstWeek, "d") EQ -1, 0, 1)>
 <cfif dateCompare(date, firstIsoDayOfFirstWeek, "d") EQ -1 AND dateCompare(date, firstIsoDayOfLastWeek, "d") NEQ -1>
 <cfset weeknum = lastWeek>
 <cfelseif dateCompare(date, lastIsoDayOfFirstWeek, "d") NEQ 1 AND dateCompare(date, firstIsoDayOfLastWeek, "d") NEQ -1>
 <cfset weeknum = 1>
 <cfelse>
 <cfset weeknum = weekDiff + (dateDiff("d", firstThur, nearestThur) / 7)>
 </cfif>
 <cfreturn weeknum>
</cffunction>
Doug

Similar Messages

Function gives wrong results

I've calculated it myself and get different results.
FUNCTION calc_customer_profit (p_custid in number)
RETURN NUMBER
IS
v_days number default 0;
v_profit number default 0;
cursor c_profitvalues is
     select ren.customer_id
     ,               ren.rent_dt
     ,               ren.return_dt
     ,               ren.daily_rate
     from rentals ren
     where ren.customer_id = p_custid
     order by ren.customer_id;
BEGIN
     for r_profitvalues in c_profitvalues loop
          v_days := Days_Between(r_profitvalues.rent_dt, r_profitvalues.return_dt);
          v_profit := (v_days*r_profitvalues.daily_rate)+v_profit;
     end loop;
     return v_profit;
END calc_customer_profit;

How about this:
SQL> create or replace
2 FUNCTION Days_Between (first_dt IN DATE, second_dt IN DATE := sysdate) RETURN NUMBER
3 IS
4 BEGIN
5    RETURN TO_NUMBER(TO_CHAR(second_dt, 'J')) - TO_NUMBER(TO_CHAR(first_dt , 'J'));
6 END;
7 /
Function created.
SQL>
SQL> set null {null}
SQL>
SQL> select dt1, dt2, Days_Between(dt1, dt2)
2 from (
3 select to_date('24.12.2004', 'DD.MM.YYYY') dt1, to_date('01.01.2005', 'DD.MM.YYYY') dt2 from dual
4 union all
5 select to_date('01.01.2005', 'DD.MM.YYYY') dt1, to_date('08.01.2005', 'DD.MM.YYYY') dt2 from dual
6 union all
7 select to_date('01.01.2005', 'DD.MM.YYYY') dt1, to_date('01.01.2005', 'DD.MM.YYYY') dt2 from dual
8 union all
9 select to_date(NULL, 'DD.MM.YYYY') dt1, to_date('01.01.2005', 'DD.MM.YYYY') dt2 from dual
10 union all
11 select to_date('01.01.2005', 'DD.MM.YYYY') dt1, to_date(NULL, 'DD.MM.YYYY') dt2 from dual
12 );
DT1       DT2       DAYS_BETWEEN(DT1,DT2)
24-DEC-04 01-JAN-05                     8
01-JAN-05 08-JAN-05                     7
01-JAN-05 01-JAN-05                     0
{null}    01-JAN-05 {null}
01-JAN-05 {null}    {null}
SQL>

GetFloatProperty gives wrong result for values out of range

Hi
When the method setFloatProperty is called by setting the float values out of the range,then calling getFloatProperty does not give NumberFormatException.
Float value set more the MAX_VALUE of float returns infinity when getFloatProperty is called.Similar problem occurs with setDoubleProperty.This behavior is confusing.can anyone help me out.
Regards
saroj13

Throwing a NumberFormatException would never make sense in this situation. The exception indicates that you are trying to convert a String to a number, but the String does not contain a valid number. eg. "as3"; when a conversion was attemted would throw a NumberFormatException.
Floats and Doubles in Java comply with the IEEE 754 standard which mandates the behaviour of the types.
Could you explain why you find this confusing?
Hope this helps.

Puzzle why query returned wrong value for last record in update.

Hi all,
10.2.0.4, Windows 32 bit.
Apply 15% dis.count to related 5 items ( total amount 522 ) sorted by lowest amount first (amount = 1).
Last record ( amount = 200 ) will be the total dis.count amount ( 78.3 ) less applied accumulated dis.count amount ( 48.50 ).
Query runs fine without update clause but wrong result for last record with update.
CREATE TABLE "T1"
    "ID"       NUMBER NOT NULL ENABLE,
    "ITEM_ID" VARCHAR2(20 BYTE) NOT NULL ENABLE,
    "AMOUNT"   NUMBER(10,2) NOT NULL ENABLE,
    "dizcount" NUMBER(10,2)
INSERT INTO T1 ( ID, ITEM_ID, AMOUNT, dizcount ) VALUES ( 65, '101', 1, NULL ) ;
INSERT INTO T1 ( ID, ITEM_ID, AMOUNT, dizcount ) VALUES ( 65, '102', 1, NULL ) ;
INSERT INTO T1 ( ID, ITEM_ID, AMOUNT, dizcount ) VALUES ( 65, '201', 200, NULL ) ;
INSERT INTO T1 ( ID, ITEM_ID, AMOUNT, dizcount ) VALUES ( 65, '215', 155, NULL ) ;
INSERT INTO T1 ( ID, ITEM_ID, AMOUNT, dizcount ) VALUES ( 65, '111', 165, NULL ) ;
UPDATE t1 a
SET a.dizcount =
(SELECT
    CASE
      WHEN rec_count = row_count
      THEN (78.3 - NVL(lag(temp_total,1) over ( order by rec_count) ,0))-- 78.3 is total dizcount amount from 522 * .15
      ELSE disc_amt
    END amt
FROM
    (SELECT id,
      item_id,
      disc_amt,
      rec_count,
      row_count,
      CASE
        WHEN rec_count != row_count -- accumulate dizcount amount except for last record
        THEN SUM(disc_amt) over (order by rec_count)
        ELSE 0
      END temp_total
    FROM
      (SELECT ID ,
        item_id,
        amount amt,
        ROUND(amount * .15,1) disc_amt, -- dizcount is 15%
        row_number () over (order by amount) rec_count,
        COUNT ( *) over () row_count
      FROM t1
      WHERE ID = 65
    GROUP BY id,
      item_id,
      disc_amt,
      rec_count,
      row_count
    )b
WHERE a.item_id = b.item_id
);Regards
Zack
Edited by: Zack.L on Jul 26, 2010 1:26 AM

Zack.L wrote:
Query runs fine without update clause but wrong result for last record with update.Not sure why but looks like another case in favour of MERGE.
MERGE INTO T1
using (SELECT id, item_id,
    CASE
      WHEN rec_count = row_count
      THEN (78.3 - NVL(lag(temp_total,1) over ( order by rec_count) ,0))-- 78.3 is total dizcount amount from 522 * .15
      ELSE disc_amt
    END amt
FROM
    (SELECT id,
      item_id,
      disc_amt,
      rec_count,
      row_count,
      CASE
        WHEN rec_count != row_count -- accumulate dizcount amount except for last record
        THEN SUM(disc_amt) over (order by rec_count)
        ELSE 0
      END temp_total
    FROM
      (SELECT ID ,
        item_id,
        amount amt,
        ROUND(amount * .15,1) disc_amt, -- dizcount is 15%
        row_number () over (order by amount) rec_count,
        COUNT ( *) over () row_count
      FROM t1
      WHERE ID = 65
    GROUP BY id,
      item_id,
      disc_amt,
      rec_count,
      row_count
    ))b
on (t1.id = b.id and t1.item_id = b.item_id)
when matched then update set dizcount = b.amt ;This worked for me. I tested on 11.2 but should work on 10.2.0.4
SQL> select * from t1 order by amount ;
        ID ITEM_ID                  AMOUNT   DIZCOUNT
        65 101                           1         .2
        65 102                           1         .2
        65 215                         155       23.3
        65 111                         165       24.8
        65 201                         200       29.8p.s. BTW, not sure if you want the column names in different cases, but your script, as it is, gave me an error (on 11.2)

Check condition for last week

Hi,
I have a table in which records are stored according to datewise. I want to filter records for last week as per sysdate. For ex, today is thursday and i want to see records which had come in between Monday to Sunday last week.
Please help me out here.
Himanshu

Hi,
Here is the query to get first day of last week , last day of last week
SQL>SELECT TO_CHAR((sysdate - to_char(sysdate,'D')),'DAY') LAST_DAY_OF_LW ,
       TO_CHAR((sysdate - to_char(sysdate,'D')) - 6,'DAY') FISRT_DAY_OF_LW,
2    3         TO_CHAR(sysdate,'DAY') TOday
4 from dual
5 /
LAST_DAY_ FISRT_DAY TODAY
SATURDAY SUNDAY    THURSDAY
1 row selected.Note: Sunday = 1 and Saturday = 7
Regards

Select for update gives wrong results. Is it a bug?

Hi,
Select for update gives wrong results. Is it a bug?
CREATE TABLE TaxIds
TaxId NUMBER(6) NOT NULL,
LocationId NUMBER(3) NOT NULL,
Status NUMBER(1)
PARTITION BY LIST (LocationId)
PARTITION P111 VALUES (111),
PARTITION P222 VALUES (222),
PARTITION P333 VALUES (333)
ALTER TABLE TaxIds ADD ( CONSTRAINT PK_TaxIds PRIMARY KEY (TaxId));
CREATE INDEX NI_TaxIdsStatus ON TaxIds ( NVL(Status,0) ) LOCAL;
Insert into TAXIDS (TAXID, LOCATIONID, STATUS) Values (100101, 111, NULL);
Insert into TAXIDS (TAXID, LOCATIONID, STATUS) Values (100102, 111, NULL);
Insert into TAXIDS (TAXID, LOCATIONID, STATUS) Values (100103, 111, NULL);
Insert into TAXIDS (TAXID, LOCATIONID, STATUS) Values (100104, 111, NULL);
Insert into TAXIDS (TAXID, LOCATIONID, STATUS) Values (200101, 222, NULL);
Insert into TAXIDS (TAXID, LOCATIONID, STATUS) Values (200102, 222, NULL);
Insert into TAXIDS (TAXID, LOCATIONID, STATUS) Values (200103, 222, NULL);
--Session_1 return TAXID=100101
select TAXID from TAXIDS where LOCATIONID=111 and NVL(STATUS,0)=0 AND rownum=1 for update
--Session_2 waits commit
select TAXID from TAXIDS where LOCATIONID=111 and NVL(STATUS,0)=0 AND rownum=1 for update
--Session_1
update TAXIDS set STATUS=1 Where TaxId=100101;
commit;
--Session_2 return 100101 opps!?
--Session_1 return TAXID=100102
select TAXID, STATUS from TAXIDS where LOCATIONID=111 and NVL(STATUS,0)=0 AND rownum=1 for update
--Session_2 waits commit
select TAXID, STATUS from TAXIDS where LOCATIONID=111 and NVL(STATUS,0)=0 AND rownum=1 for update
--Session_1
update TAXIDS set STATUS=1 Where TaxId=100102;
commit;
--Session_2 return 100103

This is a bug. Got to be a bug.
This should be nothing to do with indeterminate results from ROWNUM, and nothing to do with read consistency at the point of statement start time in session2., surely.
Session 2 should never return 100101 once the lock from session 1 is released.
The SELECT FOR UPDATE should restart and 100101 should not be selected as it does not meet the criteria of the select.
A statement restart should ensure this.
A number of demos highlight this.
Firstly, recall the original observation in the original test case.
Setup
SQL> DROP TABLE taxids;
Table dropped.
SQL>
SQL> CREATE TABLE TaxIds
2 (TaxId NUMBER(6) NOT NULL,
3   LocationId NUMBER(3) NOT NULL,
4   Status NUMBER(1))
5 PARTITION BY LIST (LocationId)
6 (PARTITION P111 VALUES (111),
7   PARTITION P222 VALUES (222),
8   PARTITION P333 VALUES (333));
Table created.
SQL>
SQL> ALTER TABLE TaxIds ADD ( CONSTRAINT PK_TaxIds PRIMARY KEY (TaxId));
Table altered.
SQL>
SQL> CREATE INDEX NI_TaxIdsStatus ON TaxIds ( NVL(Status,0) ) LOCAL;
Index created.
SQL>
SQL>
SQL> Insert into TAXIDS (TAXID, LOCATIONID, STATUS) Values (100101, 111, NULL);
1 row created.
SQL> Insert into TAXIDS (TAXID, LOCATIONID, STATUS) Values (100102, 111, NULL);
1 row created.
SQL> Insert into TAXIDS (TAXID, LOCATIONID, STATUS) Values (100103, 111, NULL);
1 row created.
SQL> Insert into TAXIDS (TAXID, LOCATIONID, STATUS) Values (100104, 111, NULL);
1 row created.
SQL> Insert into TAXIDS (TAXID, LOCATIONID, STATUS) Values (200101, 222, NULL);
1 row created.
SQL> Insert into TAXIDS (TAXID, LOCATIONID, STATUS) Values (200102, 222, NULL);
1 row created.
SQL> commit;
Commit complete.
SQL> Original observation:
Session1>SELECT taxid
2 FROM   taxids
3 WHERE locationid    = 111
4 AND    NVL(STATUS,0) = 0
5 AND    ROWNUM        = 1
6 FOR UPDATE;
     TAXID
    100101
Session1>
--> Session 2 with same statement hangs until
Session1>BEGIN
2   UPDATE taxids SET status=1 WHERE taxid=100101;
3   COMMIT;
4 END;
5 /
PL/SQL procedure successfully completed.
Session1>
--> At which point, Session 2 returns
Session2>SELECT taxid
2 FROM   taxids
3 WHERE locationid    = 111
4 AND    NVL(STATUS,0) = 0
5 AND    ROWNUM        = 1
6 FOR UPDATE;
     TAXID
    100101
Session2>There's no way that session 2 should have returned 100101. That is the point of FOR UPDATE. It completely reintroduces the lost UPDATE scenario.
Secondly, what happens if we drop the index.
Let's reset the data and drop the index:
Session1>UPDATE taxids SET status=0 where taxid=100101;
1 row updated.
Session1>commit;
Commit complete.
Session1>drop index NI_TaxIdsStatus;
Index dropped.
Session1>Then try again:
Session1>SELECT taxid
2 FROM   taxids
3 WHERE locationid    = 111
4 AND    NVL(STATUS,0) = 0
5 AND    ROWNUM        = 1
6 FOR UPDATE;
     TAXID
    100101
Session1>
--> Session 2 hangs again until
Session1>BEGIN
2   UPDATE taxids SET status=1 WHERE taxid=100101;
3   COMMIT;
4 END;
5 /
PL/SQL procedure successfully completed.
Session1>
--> At which point in session 2:
Session2>SELECT taxid
2 FROM   taxids
3 WHERE locationid    = 111
4 AND    NVL(STATUS,0) = 0
5 AND    ROWNUM        = 1
6 FOR UPDATE;
     TAXID
    100102
Session2>Proves nothing, Non-deterministic ROWNUM you say.
Then let's reset, recreate the index and explicity ask then for row 100101.
It should give the same result as the ROWNUM query without any doubts over the ROWNUM, etc.
If the original behaviour was correct, session 2 should also be able to get 100101:
Session1>SELECT taxid
2 FROM   taxids
3 WHERE locationid    = 111
4 AND    NVL(STATUS,0) = 0
5 AND    taxid         = 100101
6 FOR UPDATE;
     TAXID
    100101
Session1>
--> same statement hangs in session 2 until
Session1>BEGIN
2   UPDATE taxids SET status=1 WHERE taxid=100101;
3   COMMIT;
4 END;
5 /
PL/SQL procedure successfully completed.
Session1>
--> so session 2 stops being blocked and:
Session2>SELECT taxid
2 FROM   taxids
3 WHERE locationid    = 111
4 AND    NVL(STATUS,0) = 0
5 AND    taxid         = 100101
6 FOR UPDATE;
no rows selected
Session2>Of course, this is how it should happen, surely?
Just to double check, let's reintroduce ROWNUM but force the order by to show it's not about read consistency at the start of the statement - restart should prevent it.
(reset, then)
Session1> select t.taxid
2   from
3    (select taxid, rowid rd
4      from   taxids
5      where locationid = 111
6      and    nvl(status,0) = 0
7      order by taxid) x
8   , taxids t
9   where t.rowid = x.rd
10   and   rownum = 1
11   for update of t.status;
     TAXID
    100101
Session1>
--> Yes, session 2 hangs until...
Session1>BEGIN
2   UPDATE taxids SET status=1 WHERE taxid=100101;
3   COMMIT;
4 END;
5 /
PL/SQL procedure successfully completed.
Session1>
--> and then
Session2> select t.taxid
2   from
3    (select taxid, rowid rd
4      from   taxids
5      where locationid = 111
6      and    nvl(status,0) = 0
7      order by taxid) x
8   , taxids t
9   where t.rowid = x.rd
10   and   rownum = 1
11   for update of t.status;
     TAXID
    100102
Session2>Session 2 should never be allowed to get 100101 once the lock is released.
This is a bug.
The worrying thing is that I can reproduce in 9.2.0.8 and 11.2.0.2.

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========

Dear Friends,
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I got a solution from Online SAP HELP portal.
http://help.sap.com/saphelp_nw04/helpdata/en/eb/3e7cf4940e11d295df0000e82de14a/frameset.htm
Notes on BADI Usage
====================
The instance generated through the factory method should be declared
as globally as possible or generally be passed as a parameter
to ensure that the initialization process must be run as rarely as possible
just once would be best. In no case should you discard the instance as soon as
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even if no active implementations exist.
Also, if the definition of the Business-Add-In is filter-dependent,
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However, you should not do without initialization altogether.
Even if you could call static methods of the implementing
class of the Business-Add-In implementation without an instance,
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Many Thanks to ROBIN
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Aby Jacob ,,,,,

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Hi Naveen,
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AND
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Here trying for one test table
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Hi,
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Thanks!

... and here are a few more...
Last Week...
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To
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To
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IF {TableName.Date} IN
DateAdd("ww", DateDiff("ww", #1/7/1900#, CurrentDate) -2, #1/7/1900#)
To
DateAdd("ww", DateDiff("ww", #1/7/1900#, CurrentDate) -3, #1/7/1900#)
THEN TRUE ELSE FALSE
and of course all 3 weeks together...
IF {TableName.Date} IN
DateAdd("ww", DateDiff("ww", #1/7/1900#, CurrentDate), #1/7/1900#)
To
DateAdd("ww", DateDiff("ww", #1/7/1900#, CurrentDate) -3, #1/7/1900#)
THEN TRUE ELSE FALSE
If you want the 1st day of the week to be Monday instead of Sunday just change the date of #1/7/190# to #1/1/1900#
HTH,
Jason

Why does the Fireworks save for web function give better results than in Photoshop?

Having used the trial version of Fireworks, I have noticed that the save for web function gives greater compression and image quality than saving for web in Photoshop. Why is this?
As Adobe are not continuing in developing Fireworks, does anyone know if will they will improve the save for web function in Photoshop to match the Fireworks version?
Are there any third party companies who anyone can recommend who will process large volumes of images for web?
Thanks

One of my favourite topics ;-P
First, the save for web function in Photoshop has not seen any real updates in a long time. In Fireworks PNG export allows for fully transparent optimized files with indexed 256 or less colours, which is impossible in the save for web function in Photohop. It is unsupported.
This is one of the reasons why Fireworks does a much better job than Photoshop. Another reason is that Photoshop adds meta junk in its exported files, and this also increases the file size (and should be removed, because there are also a number of fields which include information about your setup).
One other caveat is that Photoshop's save for web functions neither allows for a choice in chroma subsampling, and instead decides automatically below a certain quality threshold to degrade the colour sharpness quality. The user has no control over this. (Fireworks also limits the user this way.)
One thing to be careful of: FW's jpg quality setting, and PS's quality settings are very different - a 50 in Photoshop is not the same 50 setting in Fireworks.
For jpg optimization I generally use RIOT (free): http://luci.criosweb.ro/riot/
(When you install, be careful NOT to install the extra junkware!)
Fireworks cannot change the chroma subsampling to 4:2:0, which does degrade the quality a bit compared to RIOT and Photoshop in my experience. Photoshop adds useless meta information, even if the user tells it not to do that. RIOT allows you to remove that information, saving 6k. RIOT also offers an automatic mode that optimizes existing jpg images without degrading the quality further, and often saves 10k or more, depending on the images.
Interestingly enough, in my tests exported Fireworks jpg images are always reduced in file size by RIOT, due to FW's jpg export limitations, without any image degradation.
In my tests FW's jpg quality versus file size turns out to be the worst of all three. RIOT generally wins, or is at least on par with Photoshop.
As for PNG export, Photoshop's save for web function is quite abysmal. No 256 colour full transparency export is possible, while Fireworks does support this.
Having said that, there is a free alternative that leaves both Photoshop AND Fireworks in the dust: Color Quantizer. http://x128.ho.ua/color-quantizer.html
CQ is an amazing little tool: with it anyone can create PNG files with full transparency and reduced to ANY number of colours! It means that a 512 colour PNG with full transparency is now very easy to do. On top of that, for more difficult images a simple quality mask brush tool allows the user to control and retain even small colour details in a PNG, while reducing the file size to an absolute minimum.
CQ is one of the best kept secrets of a Web Developer's toolkit. And it is free!
Both RIOT and Color Quantizer have a built-in batch mode. Both are available for WIndows. Not for Mac. If you are on a Mac, try imageOptim. Not nearly as good as RIOT and CQ, but quite passable.
PS to be fair, the newest versions of Photoshop do allow for export of 8bit PNGs with full transparency through the use of its Generator functionality. But again, it cannot compete with CQ. And as far as I am aware, Generator cannot be used in Photoshop's batch processing (which, btw, is very slow! For simpler daily image processing tasks I have to do in batches, I prefer IrfanView, which is lightning fast! IrfanView).

Week function gives wrong result for last week in year

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