RE: Min of decode explaination

  • From: "Mark W. Farnham" <mwf@xxxxxxxx>
  • To: <oracle-l@xxxxxxxxxxxxx>
  • Date: Thu, 29 Jul 2004 13:10:50 -0400

actually, 01.... is the lowest character value. you need to convert it back
to a date before you apply the min function.

-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx
[mailto:oracle-l-bounce@xxxxxxxxxxxxx]On Behalf Of Raj Jamadagni
Sent: Thursday, July 29, 2004 11:14 AM
To: oracle-l@xxxxxxxxxxxxx
Subject: Re: Min of decode explaination


Try

select min(plan_start_dt),
    min(decode(ord_stat,'OP','',to_char(plan_start_dt,'dd-mon-yy')))
    from test_tbl;

It's probably the implicit data conversion.
ymmv
Raj
--- Lee Lee <dumbdba@xxxxxxxxx> wrote:

> grrrrr.
>
> This should be an easy question.
>
> I have the following table:
>
> SQL> desc test_tbl
>  Name                          Null?    Type
>  ----------------------------- -------- ------------
>  PART_NBR                               CHAR(25)
>  ORD_NBR                                CHAR(10)
>  PLAN_START_DT                          DATE
>  ORD_STAT                               CHAR(2)
>
>
>
>
> With the following data:
>
> PART_NBR                  ORD_NBR    PLAN_STAR OR
> ------------------------- ---------- --------- --
> 1234-567                  1002003004 07-DEC-04 FP
> 1234-567                  1002003004 07-DEC-04 FP
> 1234-567                  1002003004 06-DEC-04 FP
> 1234-567                  1002003004 06-DEC-04 FP
> 1234-567                  1002003004 03-DEC-04 FP
> 1234-567                  1002003004 03-DEC-04 FP
> 1234-567                  1002003004 02-DEC-04 FP
> 1234-567                  1002003004 02-DEC-04 FP
> 1234-567                  1002003004 01-DEC-04 FP
> 1234-567                  1002003004 30-NOV-04 FP
> 1234-567                  1002003004 29-NOV-04 FP
> 1234-567                  1002003004 23-NOV-04 FP
> 1234-567                  1002003004 22-NOV-04 FP
> 1234-567                  1002003004 19-NOV-04 FP
> 1234-567                  1002003004 18-NOV-04 FP
> 1234-567                  1002003004 17-NOV-04 FP
> 1234-567                  1002003004 16-NOV-04 FP
> 1234-567                  1002003004 15-NOV-04 FP
> 1234-567                  1002003004 11-NOV-04 FP
> 1234-567                  1002003004 10-NOV-04 FP
> 1234-567                  1002003004 10-NOV-04 FP
> 1234-567                  1002003004 10-NOV-04 FP
> 1234-567                  1002003004 09-NOV-04 FP
> 1234-567                  1002003004 08-NOV-04 FP
> 1234-567                  1002003004 05-NOV-04 FP
> 1234-567                  1002003004 05-NOV-04 FP
> 1234-567                  1002003004 03-NOV-04 FP
>
> Why does this query return different values for each
> column, shouldn't they be the same.
>
> SQL> select min(plan_start_dt),
>     min(decode(ord_stat,'OP','',plan_start_dt))
>
>     from test_tbl;
>
> MIN(PLAN_ MIN(DECOD
> --------- ---------
> 03-NOV-04 01-DEC-04
>
> 1 row selected.
>
>
> Thanks,
> Dummy
>
>
>
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=====
Best Regards
Raj
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