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...
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' -- ...
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...
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...
SELECT*FROMemp_data; The output shows that the current DateTime values have been inserted into the “emp_joining_date” column, and the timezone information has been skipped successfully. Conclusion The PostgreSQL “TIMESTAMP” or “TIMESTAMP WITHOUT TIME ZONE” data type stores a timestamp value...
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...
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 * 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...
selecttimestampwithouttimezone'epoch',timestampwithtimezone'epoch',timestamp'epoch',timestamptz'epoch' 1. PostgreSQL的时间/日期函数使用 postgreSQL格式化时间的函数详解 mysql转为postgesql SELECTFROM_UNIXTIME(UNIX_TIMESTAMP(UTC_TIMESTAMP())+tz.gmt_offset,'%a, %d %b %Y, %H:%i:%s')ASlocal_time...
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...