create table time_test(id INT PRIMARY KEY NOT NULL, time_zone timestamp with time zone); insert into time_test (id,time_zone) values (1,'2022-09-28 15:00:00'); show timezone; SET TIME ZONE 'Europe/Rome'; select
is a timestamp with time zone. PostgreSQL never examines the content of a literal string before determining its type, and therefore will treat both of the above as timestamp without time zone. To ensure that a literal is treated as timestamp with time zone, give it the correct explicit typ...
clock_timestamp()timestamp with time zone当前时间戳(语句执行时变化)select clock_timestamp();2016-07-08 15:14:04.197732-07 current_datedate当前日期select current_date;2016-07-08 current_timetime with time zone当前时间select current_time;15:15:56.394651-07 current_timestamptimestamp with time zo...
SELECT NOW(), CURRENT_TIMESTAMP; “` 3、LOCALTIMESTAMP LOCALTIMESTAMP函数返回当前日期和时间,但不包含时区信息。 “`sql SELECT LOCALTIMESTAMP; “` 注意事项 1、时区问题 PostgreSQL 默认使用服务器所在时区,如果你需要使用其他时区,可以在创建数据库时指定TimeZone参数,可以通过show timezone;命令查看当前数据...
SELECT timezone('MST', current_timestamp) -- 2021/3/6 3:17:49.921 1. 2. 3. 4. 5. 6. 7. 8. PostgreSQL时间格式化函数 to_char将时间戳转成字符串 SELECT to_char(current_timestamp, 'YYYY-MM-DD HH24:MI:SS'); -- 2021-03-06 17:03:45 ...
SELECT * FROM emp_data; A new record without a time zone information has been inserted into the “emp_joining_date” column. Example 3: Inserting DateTime Values Via Different Built-in Functions In Postgres, the functions likeNOW(),CURRENT_TIMESTAMP,TRANSACTION_TIMESTAMP(), etc., retrieve the...
create table time_test(id INT PRIMARY KEY NOT NULL, time_zone timestamp with time zone); insert into time_test (id,time_zone) values (1,'2022-09-28 15:00:00'); show timezone; SET TIME ZONE 'Europe/Rome'; select * from time_test; ...
time ：“hh:mm:ss”格式表示的时间值 datetime： “yyyy-mm-dd hh:mm:ss”格式 timestamp： “...
类型`time with time zone`是 SQL 标准定义的,但是该定义显示出了一些会影响可用性的性质。在大多数情况下, `date`、`time`、`timestamp without time zone`和`timestamp with time zone`的组合就应该能提供任何应用所需的全范围的日期/时间功能。 ### 1. 日期/时间输入 日期和时间的输入可以接受几乎任何...
1 select extract(epoch from now()); 1 select timestamp without time zone 'epoch',timestamp without time zone 'epoch' + 3600*interval '1 sec' 1 select timestamp without time zone 'epoch',timestamp with time zone 'epoch' 把epoch 值转换回时间戳 1 select timestamp without time zone 'ep...