select current_timestamp,from_tz(current_timestamp,'Asia/Shanghia') from dual; //因为current_timestamp本身就带有时区,该语句会出现 expected TIMESTAMP got TIMESTAMP WITH TIME ZONE 1. 第一个参数就是不带时区的时间戳,如果带时区就会出错 select from_tz(timestamp '2022-08-25 14:11:30','Asia/S...
create table t(id number,c1 timestamp(10) with time zone ,c2 timestamp(10)) * ERROR at line 1: ORA-30088: datetime/interval precision is out of range --//timestamp 最高精度是9,输入10报错。 SCOTT@book01p> create table t(id number,c1 timestamp(9) with time zone ,c2 timestamp(9...
输出格式和语言由 NLS_TIMESTAMP_FORMAT和NLS_DATE_LANGUAGE 两个初始化参数决定。如果查询时不指定这两个参数也不进行类型转换,会按默认格式输出。 SQL> select localtimestamp from dual; LOCALTIMESTAMP --- 12-FEB-14 01.14.12.945256 AM SQL> alter session set nls_timestamp_format='YYYY-MM-DD HH24:M...
TIMESTAMP WITH LOCAL TIME ZONE INTERVAL YEAR TO MONTH INTERVAL DAY TO SECOND 20.2 DATE和TIMESTAMP类型 1)DATE只能精确到秒 SQL> select sysdate from dual; SYSDATE --- 2013-03-10 07:07:00 2)TIMESTAMP类型是DATE型的扩展 SQL> select localtimestamp from dual; LOCALTIMESTAMP --- 2013-06-17 1...
然后用system/oracle用户登录到oracle,执行下列sql建表: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 create tabletest(date_field date,ts_field timestamp,ts_tz_field timestampwithtime zone,ts_ltz_field timestampwithlocal time zone);
Select TO_TIMESTAMP_TZ('2018-05-14','yyyy-mm-dd') from dual; 结果: 5、current_date、current_timestamp、localtimestamp、sessiontimezone、dbtimezone函数 current_date:9i新增函数,返回当前会话时区所对应的日期时间(date型) current_timestamp:以 timestamp with time zone 数据类型返回当前会话时区所对应...
DATE，TIMESTAMP，TIMESTAMPWITHTIMEZONE和TIM ESTAMPWITHLOCALTIMEZONE。粗略介绍如下：DATE：存储⽇期和时间信息，精确到秒。SQL>alter sessionsetnls_date_format=''YYYY-MM-DDHH24:MI:SS'';Sessionalte red.SQL>selectto_date(''2009-01-1213:24:33'',''YYYY-MM-DDHH24:MI :SS'')fromdual;TO_DATE(...
和时区相关的数据类型主要有:DATE,TIMESTAMP,TIMESTAMP WITH TIME ZONE和TIMESTAMP WITH LOCAL TIME ZONE。粗略介绍如下: DATE:存储日期和时间信息,精确到秒。 SQL> alter session set nls_date_format='YYYY-MM-DD HH24:MI:SS'; Session altered.
sql oracle plsql timestamp sysdate 该代码给出了SYSDATE的正确答案select round((SYSDATE - date '1970-01-01')*24*60*60) from dual; 1662482430 (seconds) 我需要以GMT/UTC返回日期/时间。我需要语法方面的帮助。Thanks, Pete发布于 9 月前 ✅ 最佳回答: 如果您使用SYSTIMESTAMP而不是SYSDATE,则该值...
Oracle date/time types In Oracle, thedateformat and thetime zonefeatures include multiple data types, including:DATE,TIMESTAMP,TIMESTAMP WITH TIME ZONEandTIMESTAMP WITH LOCAL TIME ZONE. TheTIMESTAMPdata type is an extension of theDATEtype. ...