concatinating the time with date...
HelloI have the column in a table that store the time from 00:00 to 23:00 hr with a different interval for each item.
I show this column with the current date time.
for example:
Table A:
expected_time
22:40
23:00
20 x 30
01:20
04:10
04:40
Table B:
Article expected_dep
XYZ
ABC
I want the query to insert into table B as sysdate expected_dep + the expected_time min value where to_char(sysdate,'hh24:mi) > present
Assume that sysdate is 2012-12-08 and sys the time now is 23:25, then the expected_dep should be 2012-12-09 00:30.
Can anyone help solve this query.
Thanks in advance...
Benz says:
This is the output result you can see the time is ok, but the date is not correct.
You must be more precise. What result do you expect? The way I understand your reqs is we find then next time sysdate in the table has. So if the current time is 02:01 next time nearest you to table a is 06:00. If you want to get the closest time to the current time any direction:
update b
set expected_dep = (
with t1 as (
select expected_time - trunc(expected_time) d
from a
union all
select 1
from dual
),
t2 as (
select trunc(sysdate) + d expected_dep,
row_number() over(order by abs(d - (sysdate - trunc(sysdate)))) r
from t1
)
select expected_dep
from t2
where r = 1
)
/
And to imitate 2012-12-10 02:01:
update b
set expected_dep = (
with t1 as (
select expected_time - trunc(expected_time) d
from a
union all
select 1
from dual
),
t2 as (
select trunc(to_date('2012-12-10 02:01','yyyy-mm-dd hh24:mi')) + d expected_dep,
row_number() over(order by abs(d - (to_date('2012-12-10 02:01','yyyy-mm-dd hh24:mi') -
trunc(to_date('2012-12-10 02:01','yyyy-mm-dd hh24:mi'))))) r
from t1
)
select expected_dep
from t2
where r = 1
)
/
4 rows updated.
SQL> select *
2 from b
3 /
ITEM EXPECTED_DEP
---------- -------------------
xyz 12/10/2012 02:00:00
abc 12/10/2012 02:00:00
def 12/10/2012 02:00:00
ghi 12/10/2012 02:00:00
SQL>
SY.
Tags: Database
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