When a timestamp with time zone value is output, it is always converted from UTC to the current timezone zone, and displayed as local time in that zone. To see the time in another time zone, either change timezone or use the AT TIME ZONE construct (see Section 9.9.4). 带时区的时间...
Postgres offers atimezone()function that accepts a zone and a timestamp as arguments and converts the timestamp to some other timestamp based on the specified/given timezone: timezone(zone, timestamp); Specify the “timezone” of your choice in place of the “zone” argument. Example: Ho...
EN将UTC设置为JVM-Duser.timezone=UTC的默认时区，或将整个操作系统设置为UTC。
"带时区的时间戳"是指在PostgreSQL中存储时间信息时,同时包含了时区信息的时间戳。这种时间戳可以在不同的时区之间进行转换,并且可以自动处理夏令时等时区变化。在PostgreSQL中,可以使用"timestamp with time zone"数据类型来存储带时区的时间戳。 "时区"的别名是"时差"。时区是指在地球上不同地区的时间差异,...
adsrc 是历史遗留,最好不要使用它,因为它并未跟踪可能影响缺省值表现形式的外部变化。反编译 adbin 字段(比如,用 pg_get_expr)是更好的显示缺省值的方法。 pg_attribute pg_attribute 表存储关于表的字段的信息。数据库里每个表的每个字段都在 pg_attribute 里有一行。还有用于索引,以及所有在 pg_class 里有记...
stats_ext扩展的计划器统计信息pg_tables表pg_timezone_abbrevs时区简写pg_timezone_names时区名字pg_...
selecting default time zone ... Asia/Shanghai creating configuration files ... ok running bootstrap script ... ok performing post-bootstrap initialization ... ok syncing data to disk ... ok initdb: warning: enabling "trust" authentication for local connections ...
current_date,current_timestamp,dbtimezone,extract,from_tz,last_day,months_between,new_time,next_day,numtodsinternal,numtoyminternal,round,sys_extract_utc,sysdate,systimestamp,to_dsinternal,to_timestamp,to_timestamp_tz,to_yminternal,trunc,tz_offset) 说明:日期时间函数用于处理date和timestamp类型的...
SELECT CURRENT_TIME; Output: current_time --- 21:02:13.648512-05 (1 row) Note that both CURRENT_TIMESTAMP and CURRENT_TIME return the current time with the time zone. To get the time of day in the string format, you use the timeofday() function. SELECT TIMEOFDAY(); timeofday ---...
PostgreSQL shell (psql) will try to connect and set the session to the local time zone as defined by yourtimezonesetting inpostgresql.conf, whereas CockroachDB will default to UTC. We can observe this withCURRENT_TIMESTAMP, which returns the current timestamp in the default session time zone:...