Min of decode explaination
- From: Lee Lee <dumbdba@xxxxxxxxx>
- To: oracle-l <oracle-l@xxxxxxxxxxxxx>
- Date: Thu, 29 Jul 2004 07:31:56 -0700 (PDT)
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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