Amending what I said earlier, having this in the WHERE clause is not a
problem.
WHERE CASE
WHEN Y.DOC_STATUS = 'R' AND DECODE (SIGN (TO_DATE
(:P_CHK_RECD_TO, 'DD/MM/RRRR') - (TO_DATE('10/02/2014','DD/MM/RRRR'))), 1,
'A') = 'A'
THEN
'A'
WHEN Y.DOC_STATUS = 'A'
THEN
'A'
ELSE
'R'
END *= 'A'*
The intent is:
Select the record if the doc_status is 'R' and Date1 > Date2
Select the record if the doc_status is 'A'
Of course and easier way to write this would be:
where (doc_status = 'R' and Date1>Date2)
OR doc_status = 'A';
Mike
On Mon, Feb 24, 2014 at 10:43 AM, Michael Moore <michaeljmo...@gmail.com>wrote:
> As far as I can tell:
> 1) this does not belong in the WHERE clause
> 2) the entire DECODE function could simply be replaced by (date1 > date2)
>
> Consider the following example:
>
> In case you don't know, DUAL is a table that has one column and one row.
> The column's name is "dummy" and the value of the row is "X".
>
> SQL> select dummy from dual
>
> DUMMY
> -----
> X
> 1 row selected.
>
>
> SQL> SELECT CASE WHEN dummy = 'X' AND SYSDATE + 1 > SYSDATE
> THEN 'A'
> WHEN dummy = 'X'
> THEN 'B'
> ELSE 'R' END result
> FROM dual
>
> RESULT
> ------
> A
> 1 row selected.
>
>
> SQL> SELECT CASE WHEN dummy = 'X' AND SYSDATE > SYSDATE
> THEN 'A'
> WHEN dummy = 'X'
> THEN 'B'
> ELSE 'R' END result
> FROM dual
>
> RESULT
> ------
> B
> 1 row selected.
>
>
> On Mon, Feb 24, 2014 at 6:59 AM, Sagar Thakkar
> <saagar.thak...@gmail.com>wrote:
>
>> HI can some explain the case function below specially the DECODE (SIGN
>> (TO_DATE (:P_CHK_RECD_TO, 'DD/MM/RRRR') -
>> (TO_DATE('10/02/2014','DD/MM/RRRR'))), 1, 'A') = 'A'
>>
>> WHERE CASE
>> WHEN Y.DOC_STATUS = 'R' AND DECODE (SIGN (TO_DATE
>> (:P_CHK_RECD_TO, 'DD/MM/RRRR') - (TO_DATE('10/02/2014','DD/MM/RRRR'))), 1,
>> 'A') = 'A'
>> THEN
>> 'A'
>> WHEN Y.DOC_STATUS = 'A'
>> THEN
>> 'A'
>> ELSE
>> 'R'
>> END = 'A'
>>
>> On Friday, August 12, 2011 3:45:41 AM UTC+3, JK wrote:
>>>
>>> The decode always returns the date format in DD-MMM-YY format whereas I
>>> want it to return in MM/DD/YYYY format.
>>>
>>> select decode(to_date(to_char(SYSDATE,'YYYYMM'),'YYYYMM'),'
>>> 000000',null,to_date(to_char(SYSDATE,'YYYYMM'),'YYYYMM')) from dual.
>>>
>>> As of now, when I type this I do not have a proper SQL editor to test
>>> the syntax. Hence it may not be correct. However, I could run the decode
>>> query in TOAD at my work and that is when I saw it is returning in
>>> DD-MMM-YY format. I hope you got some idea as to what my requirement is.
>>> Looking forward to your help.
>>>
>>>
>>> Thanks in advance.
>>>
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>
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