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; 从上图可以看到,我们的time with zone 的字段的时...
是一个 timestamp with time zone。 +08:表示 时区与全球统一时间 UTC 偏移量为 8 小时 AT TIME ZONE 构造允许把时间戳转换成不同的时区与timezone(zone,timestamp) 函数等效 SELECT current_timestamp AT TIME ZONE 'HKT' -- 2021/3/6 18:17:26.277 SELECT current_timestamp AT TIME ZONE 'MST' -- ...
这些配置信息是放在$PGHOME/share/timezone里面。 4.实验: 美国西7区与中国东八区相差15个小时,格林威治时间UTC和东八区相差8个小时 test=#settimezone="US/Pacific"; SET test=# show timezone; TimeZone---US/Pacific (1row) test=#selectnow()::timestamp with time zone, now()::timestamp withou...
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 * 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...
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;命令查看当前数据库的时区设置。 在处理跨时区的日期时间数据时,要注意以下两点:
SELECT timezone('UTC', timestamp_column) AS utc_timestamp FROM table_name; 复制代码 这也会将 timestamp_column 中的时间戳转换为 UTC 时区的时间戳。 要注意的是,PostgreSQL 使用 timestamp with time zone 类型来存储日期和时间信息,因此如果需要根据不同的时区进行转换,可以先确保数据存储的时区是正确的...
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; ...
SELECTTIMEZONE('Canada/Mountain', TIMESTAMPTZ '2020-11-1108:30:15-08'); The input timestamp has been converted according to the specified time zone. Date/Time Functions With Time Zone Postgres offers several date-time functions to deal with temporal data. The below-provided functions retrieve...
select * from pg_timezone_names where utc_offset = '+08:00:00'; 查询结果中的"PRC","Asia/Shanghai","Asia/Chongqing"均表示中国 生成一个日期时间示例 select make_timestamptz(1970,1,1,0,0,0.0,'Asia/Shanghai') 注意避免使用timestamp类型相关函数,如:make_timestamp...