oracle sql日期比较:
在今天之前:
<!---->
select
*
from
up_date
where
update
<
to_date(
'
2007-09-07 00:00:00
'
,
'
yyyy-mm-dd hh24:mi:ss
'
)
select
*
from
up_date
where
update
<=
to_date(
'
2007-09-07 00:00:00
'
,
'
yyyy-mm-dd hh24:mi:ss
'
)
在今天只后:
<!---->
select
*
from
up_date
where
update
>
to_date(
'
2007-09-07 00:00:00
'
,
'
yyyy-mm-dd hh24:mi:ss
'
)
select
*
from
up_date
where
update
>=
to_date(
'
2007-09-07 00:00:00
'
,
'
yyyy-mm-dd hh24:mi:ss
'
)
精确时间:
<!---->
select
*
from
up_date
where
update
=
to_date(
'
2007-09-07 00:00:00
'
,
'
yyyy-mm-dd hh24:mi:ss
'
)
在某段时间内:
<!---->
select
*
from
up_date
where
update
between
to_date(
'
2007-07-07 00:00:00
'
,
'
yyyy-mm-dd hh24:mi:ss
'
)
and
to_date(
'
2007-09-07 00:00:00
'
,
'
yyyy-mm-dd hh24:mi:ss
'
)
select
*
from
up_date
where
update
<
to_date(
'
2007-09-07 00:00:00
'
,
'
yyyy-mm-dd hh24:mi:ss
'
)
and
update
>
to_date(
'
2007-07-07 00:00:00
'
,
'
yyyy-mm-dd hh24:mi:ss
'
)
select
*
from
up_date
where
update
<=
to_date(
'
2007-09-07 00:00:00
'
,
'
yyyy-mm-dd hh24:mi:ss
'
)
and
update
>=
to_date(
'
2007-07-07 00:00:00
'
,
'
yyyy-mm-dd hh24:mi:ss
'
)
