create table timetest(
tme date,
tmestp timestamp(3),
tmestp_tz timestamp(3) with time zone,
tmpstp_tzl timestamp(3) with local time zone)
insert into timetest values(sysdate,sysdate,sysdate,sysdate)
select * from timetest
alter session set time_zone='-4:00'
select * from timetest
运行完后为什么一直都是那个结果?时区为什么不会改变? |
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