How to do is decode ?

Hi,
I have the following sql in place :-
SELECT TD_MAIN_ACNT_CODE, SUM(DECODE(TD_DOC_DRCR_FLAG,'C', 0 - TD_DOC_AMT, TD_DOC_AMT)) NETT
FROM FV_TRANS_DETAIL
GROUP BY TD_MAIN_ACNT_CODE
The output is as below :
TD_MAIN_ACNT_CODE NETT
41060_____________________-990.8
41060_____________________-1231.4
41060_____________________-423.5
41060_____________________543.33
41060_____________________989.99
from the query, I want to convert those figure (NETT) with < 0 to be changed to positive value. How am I going to achieve this?
Please advise.
Regards,
Lim

Excellent point, they are not the same thing.
How about:
WITH test AS
     ( SELECT integer_tt(1,3,5,7,9) AS coll1
            , integer_tt(3,7) AS coll2
       FROM   dual
       UNION ALL
       SELECT integer_tt(3,5,7) AS coll1
            , integer_tt(1,3,7,9) AS coll2
       FROM   dual )
SELECT coll1
     , coll2
     , CASE
           WHEN coll2 SUBMULTISET coll1 THEN 'True'
           ELSE 'False'
       END
     , DECODE(CARDINALITY(coll2 MULTISET EXCEPT coll1),
              0,'True', 'False')
FROM test;
COLL1                       COLL2                       CASEW DECOD
INTEGER_TT(1, 3, 5, 7, 9)   INTEGER_TT(3, 7)            True True
INTEGER_TT(3, 5, 7)         INTEGER_TT(1, 3, 7, 9)      False False

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[Urgent!!] How to do quadrature decoding using DAQCard 6062E??

Hi,
I am Xiaofei, a beginner of LabVIEW. Now i am dealing with a project involving quadrature decoding by using DAQ Card 6062E and breakout board CB68LP. We need to use 2 optical encoders simutaneously, and for each encoder, we need to use 3 digital channels (A,B and Index), therefore there will be totally 6 digital channels in use. For this reason, is it still good to use the counter channel? or we'd better use 6 DIO?
I'm not sure if there is any existing VI that can help us with decoding, if there is, could you please let me know how we can find it?
If we will need to make the decoding code by ourselves, could you please give me some hint so that we can start it?
I heard that there should be an example called "How to Count.vi" that shows how to decode, however i failed to find it by using example finder, so does anyone know how to find it?
This is kinda urgent, i have to figure it out by tonight in order to keep my project rolling. So if you have any idea about it, pleeeeeeeeeease let me know! Thanks a million!!!
Regards,
Xiaofei

Duplicate post.
Please do not generate a new message thread with the same question.
Keep your messages to the original post.

How to do quadrature decoding using DAQCard6062E?

Hi,
My name is Xiaofei, a beginner of LabVIEW. Now i am dealing with a project involving quadrature decoding by using DAQ Card 6062E and breakout board CB68LP. We need to use 2 optical encoders simutaneously, and for each encoder, we need to use 3 digital channels (A,B and Index), therefore there will be totally 6 digital channels in use. For this reason, is it still good to use the counter channel? or we'd better use 6 DIO?
I'm not sure if there is any existing VI that can help us with decoding, if there is, could you please let me know how we can find it?
If we will need to make the decoding code by ourselves, could you please give me some hint so that we can start it?
I heard that there should be an example called "How to Count.vi" that shows how to decode, however i failed to find it by using example finder, so does anyone know how to find it?
Thanks a million!!!
Regards,
Xiaofei

Hi Xiaofei,
Our 6062E DAQ cards can be used with either our DAQmx drivers or our older
Traditional DAQ (Legacy) drivers. The example that I've provide below is
for use with our DAQmx driver set. If you’re using Traditional DAQ
drivers I would recommend upgrading to our newest DAQmx drivers. You can
click here
for help determining what version of DAQmx works with your version of LabVIEW.
To do hardware timed quadrature encoder applications you will want to use the
counters on your 6062E DAQ card. Click here for a guide to
using quadrature encoders on E-series DAQ cards. Unfortunately, our
E-Series cards do not support Z-indexing as described in the following
developer zone tutorial: Quadrature
Encoder / Position Measurement. However, you should be able to use
your encoders without using Z-indexing. Each of your encoders will
use one counter source and one digital line for your A and B inputs. The
counters will count the edges of the A input while the digital line determines
the direction (Up or Down). A good example can be in the example finder
under the following location: (Help » Find Examples » Hardware Input and Ouput
» DAQmx » Counter Measurements » Count Digital Events » Count Digital Events.vi).
This example should give you a good start for use with encoder. You will
just want to replicate the code for your additional encoder.
I hope this helps,
Paul C.

How to replace huge decode statements with lookups to some simple code/key

I have a legacy PL/SQL application, composed of many very huge decode statements. And the most terribe one is that the guys who develops the application left the company now, leaves no documentation.
We are trying to read and understand those PL/SQL programs, and I'm asked to replace those huge decode statements with lookups to some simple code/key tables? But I have no idea about how to design such code/key tables. Is there any one who has similar experience may help me? Besides code/key tables, any idea will be welcome.
Thank you very much!

Not sure what your data looks like but sometimes decode can be replaced with more appropriate functions, ie;
SQL> with t as (
   select 'DAY' a, 30 b, null c, null d from dual union all
   select null a, null b, 'MONTH' c, 12 from dual)
select coalesce(b,d)
from t
COALESCE(B,D)
           30
           12
2 rows selected.
SQL> with t as (
   select 'DAY' a, 30 b, null c, 0 d from dual union all
   select null a, 0 b, 'MONTH' c, 12 from dual)
select greatest(b,d)
from t
GREATEST(B,D)
           30
           12
2 rows selected.

How to use a decode function

I want to use the following with decode, recently started on BODS.
Can you please provide the steps to use decode function
in source tabke fieldname is ordid and in target fieldname is Orderid
decode(Order_ID = 1709,lpad(Order_ID,7,'700'),Order_ID)
thank you very much for the helpful i

1) In the mapping tab of target column, click on Functions, select Miscellaneous Functions category, you can find decode function in it. Lpad can be found in String functions category.
OR
2) You can directly script this or paste this code at the mapping tab. In this case, remove the Order_ID from the script wherever used, drag and drop this column from the input schema of Query transform to avoid the syntax error.
Regards,
Suneer

How can we use DECODE function in where clause.

Hi Guys,
I have to use DECODE function in where clause.
like below
select * from tab1,tab2
where a.tab1 = b.tab2
and decode(code, 'a','approved')
in this manner its not accepting?
Can any one help me on this or any other aproach?
Thanks
-LKR

>
I am looking for to decode the actual db value something in different for my report.
like if A then Accepted
elseif R then Rejected
elseif D then Denied
these conditions I have to check in where clause.
>
what are you trying to do?
may be you are looking for
select * from tab1,tab2
where a.tab1 = b.tab2
and
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   or
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How to use Decode with a variable

Maybe you've seen this done.
I want to take statement strMenu4 and subtract the previous value
that is stored in an array as shown in strMenu5.
My problem is this change as shown in strMenu5 produces
an error code:
ORA-00904 invalid column name
So either I'm coding something wrong or it can't be done within the
SUM(decode) construct. If I replace the variable with a literal
like 1000 the code works:
SUM(decode(name,'DBWR lru scans', c1.value) - 1000) DBWR_lru_scans
but with an array variable or even a constant the code fails:
SUM(decode(name,'DBWR lru scans', c1.value) - Array(3)) DBWR_lru_scans, "
Any ideas how I can use Decode with a variable and not have it interrupt it
as a invalid column name?
Thanks,
Joseph Karpinski
[email protected]
[email protected]
strMenu4 = "SELECT d1.instance, " _
& " to_char(sysdate, 'dd-mon-yy hh24:mi:ss') start_time, " _
& " SUM(decode(name,'DBWR buffers scanned', c1.value)) DBWR_buffers_scanned, " _
& " SUM(decode(name,'DBWR lru scans', c1.value)) DBWR_lru_scans, " _
& " SUM(decode(name,'db block gets', c1.value)) db_block_gets , " _
& " SUM(decode(name,'consistent gets', c1.value)) consistent_gets , " _
& " SUM(decode(name,'physical reads', c1.value)) physical_reads " _
& " from dual, v$sysstat c1, v$thread d1 " _
& " group by d1.instance "
strMenu5 = "SELECT d1.instance, " _
& " to_char(sysdate, 'dd-mon-yy hh24:mi:ss') start_time, " _
& " SUM(decode(name,'DBWR buffers scanned', c1.value) - Array(2)) DBWR_buffers_scanned, " _
& " SUM(decode(name,'DBWR lru scans', c1.value) - Array(3)) DBWR_lru_scans, " _
& " SUM(decode(name,'db block gets', c1.value) - Array(4)) db_block_gets , " _
& " SUM(decode(name,'consistent gets', c1.value) - Array(5)) consistent_gets , " _
& " SUM(decode(name,'physical reads', c1.value) - Array(6)) physical_reads " _
& " from dual, v$sysstat c1, v$thread d1 " _
& " group by d1.instance "

Re-posting in the SQL and PL/SQL forum.
It's more appropriate.
Thanks,
Closing

How to Use Decode for manipulating time

How can i use Decode function to manipulate time...
Example
suppose ive employee and his time in...i want to display status field by using decode,which reflects if that employee came after 09:15:00 the status='L' else this will print 'P'
i tried this
SELECT pin_code,DECODE( to_char(ACCESS_TIME,'HH24:MI:SS'>'09:15:00','l','P'))STATUS
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this query hasn't work...
waiting for reply
Regards
Danish Hayder

SQL> select case when to_number(to_char(sysdate,'sssss')) > 33300 then 'L'
2 else 'P' end status
3 from dual;
S
L
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How to encode/decode URLs ...

Hello,
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I don't know of an encoder, but IBM alphaWorks has a decoder:
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CASE WHEN statement in DECODE

SELECT v_startdate, v_enddate,
(CASE WHEN SYSDATE BETWEEN v_startdate AND v_enddate THEN
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ELSE
‘inactive’
END) status
FROM correction_tab;
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Thanks,
Rami Reddy.

You can, like this.
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2    ( select trunc(sysdate)-1 as v_startdate, trunc(sysdate)   as v_enddate from dual
3    union all
4      select trunc(sysdate)   as v_startdate, trunc(sysdate)+1 as v_enddate from dual
5    union all
6      select trunc(sysdate)+1 as v_startdate, trunc(sysdate)+2 as v_enddate from dual
7    )
8 SELECT v_startdate
9 ,      v_enddate
10 ,      CASE
11           WHEN SYSDATE BETWEEN v_startdate AND v_enddate
12             THEN 'active'
13           ELSE 'inactive'
14         END status
15 ,      decode ( sign(sysdate-v_startdate), 1, decode(sign(v_enddate-sysdate), 1, 'active', 'inactive'), 'inactive')
as status2
16 FROM correction_tab
17 /
V_STARTDA V_ENDDATE STATUS   STATUS2
12-DEC-12 13-DEC-12 inactive inactive
13-DEC-12 14-DEC-12 active   active
14-DEC-12 15-DEC-12 inactive inactive

Sqloader - DECODE FOR DATE

Hi could u please assist me as to how to use a decode function in a control file for sql loader to replace a certain row with datatype DATE...
OPTIONS (DIRECT=TRUE) UNRECOVERABLE
LOAD data REPLACE
PRESERVE BLANKS INTO TABLE <tablename> FIELDS TERMINATED BY "Ï" TRAILING NULLCOLS
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Please assist.
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Thanks
Maira

hi Jens,
I did try as u suggested but I'm getting the folowing error.
Record 1: Rejected - Error on table <tablename>.
ORA-00604: error occurred at recursive SQL level 1
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Any suggestions.
REgards

Decode Function need amount

Hi All,
There is a Amount column in my table contain both credit(-amount) and debit(+amount) ,i hv to split this Amount in two column of positive amount(debit) and negative amount (credit) as i am using decode function to get output but i am unable to get , can anyone help how to write the decode function.
Thanks...

Hi,
Something like this,
SQL> With t As(select -29 amount from dual union all
2            select   5 amount from dual union all
3            select -10 amount from dual)
4 SELECT Amount
5       , Decode(Sign(amount), 1,Amount) As Debit
6       , Decode(Sign(amount),-1,Amount) As Credit
7    FROM t;
    AMOUNT      DEBIT     CREDIT
       -29                   -29
         5          5
       -10                   -10or
SQL> With t As(select -29 amount from dual union all
2            select   5 amount from dual union all
3            select -10 amount from dual)
4 SELECT Amount
5       , Decode(sign(amount),1,'Debit',-1,'Credit') Amount
6    FROM t;
    AMOUNT AMOUNT
       -29 Credit
         5 Debit
       -10 CreditRegards,
Christian Balz
Edited by: Christian Balz on 16/06/2009 21:36

SQL Cost of using DECODE built-in

I'm trying to tune some SQL and wondering about the cost of using DECODE. I believe that by using this function, it prevents any index on the related column from being used.
Do any "Tuning Gurus" have opinions on the use of DECODE?
TIA,

As a general rule, the Oracle built-in functions are pretty fast to execute. You will not really see any difference in performance between a sql statement using a built-in function in the SELECT clause, and one not using one.
However, a lot depends on where and how you use the DECODE.
SELECT col1,DECODE(col2,1,'YES',2,'NO',3,'MAYBE')
FROM table
will be no slower than
SELECT col1,col2
FROM table
If there is an index on col2, then
SELECT col1,DECODE(col2,1,'YES',2,'NO',3,'MAYBE')
FROM table
WHERE col2 BETWEEN 1 AND 3
will use it. However
SELECT col1,col2
FROM table
WHERE DECODE(col2,1,'YES',2,'NO',3,'MAYBE') IN ('YES','NO','MAYBE')
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SELECT col1,col3
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WHERE col2 BETWEEN 1 and 3 and
col3 = DECODE(col2,1,'YES',2,'NO',3,'MAYBE') IN ('YES','NO','MAYBE')
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HTH
John

Problem with URLDecoder.decode(s, enc)

Hi!
I'm having problems with the URLDecoder.decode(s, enc) method... When I send a string, encoded with the Javascript escape() function, to the server side of my application, I get a problem decoding it using this:
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My html defines the encoding as follows:
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I'm having exactly the same issue.
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Hi,
How to convert this decode statements into CASE WHEN syntax
phone_v := DECODE (c_rec.phone, NULL, NULL, DECODE ( is_it_number (c_rec.phone), 'F', DBMS_RANDOM.STRING ('a', LENGTH (c_rec.phone)), SUBSTR                                                             (DBMS_RANDOM.VALUE, 2, LENGTH (c_rec.phone))));
thanks, Bcj

That should be easiest written like the following :
phone_v := DECODE (c_rec.phone
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Nicolas.

How to do is decode ?

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