/SQL/Postgresql change timezone on timestamp without timezone

Postgresql change timezone on timestamp without timezone

Postgres set timezone

SET TIME ZONE 'Europe/Moscow';

Postgresql change timezone on timestamp without timezone

-- You have an issue where entries in the database are recorded in local time without the timezone
-- Postgresql assumes that these entries are in fact UTC
-- This corrects these entries by converting them to actual UTC
-- You might want to update the column (from timestamp) to a timestamptz, then perform the command below
UPDATE <table>
SET <timestamptz_field> = 
  (<timestamptz_field> AT TIME ZONE 'UTC') AT TIME ZONE '<correct_time_zone>';
  
-- e.g start_date_time before = '2021-07-29 18:15:16+00' (This is from a location at GMT+2)
-- start_date_time after = '2021-07-29 16:15:16+00' (This is the actual UTC timestamp)
UPDATE public.uut_result
	SET start_date_time= (start_date_time at time zone 'utc') at time zone 'Africa/Harare'

Source: stackoverflow.com

Postgres insert timestamp without timezone

            
                
            
         INSERT INTO timestamp_demo (ts, tstz)
VALUES('2016-06-22 19:10:25-07','2016-06-22 19:10:25-07');Code language: SQL (Structured Query Language) (sql)

Source: postgresqltutorial.com

Timestamp with timezone postgres

foo=> SET TIMEZONE TO 'Japan';
SET
foo=> SELECT '2011-01-01 00:00:00'::TIMESTAMP;
      timestamp      
---------------------
 2011-01-01 00:00:00
(1 row)

foo=> SELECT '2011-01-01 00:00:00'::TIMESTAMP WITH TIME ZONE;
      timestamptz       
------------------------
 2011-01-01 00:00:00+09
(1 row)

foo=> SELECT '2011-01-01 00:00:00+03'::TIMESTAMP;
      timestamp      
---------------------
 2011-01-01 00:00:00
(1 row)

foo=> SELECT '2011-01-01 00:00:00+03'::TIMESTAMP WITH TIME ZONE;
      timestamptz       
------------------------
 2011-01-01 06:00:00+09
(1 row)

foo=> SET TIMEZONE TO 'Australia/Melbourne';
SET
foo=> SELECT '2011-01-01 00:00:00'::TIMESTAMP;
      timestamp      
---------------------
 2011-01-01 00:00:00
(1 row)

foo=> SELECT '2011-01-01 00:00:00'::TIMESTAMP WITH TIME ZONE;
      timestamptz       
------------------------
 2011-01-01 00:00:00+11
(1 row)

foo=> SELECT '2011-01-01 00:00:00+03'::TIMESTAMP;
      timestamp      
---------------------
 2011-01-01 00:00:00
(1 row)

foo=> SELECT '2011-01-01 00:00:00+03'::TIMESTAMP WITH TIME ZONE;
      timestamptz       
------------------------
 2011-01-01 08:00:00+11
(1 row)

Source: stackoverflow.com

Similar codes

1 vote347 views2 answers
Mysql extract number from string
SQL
1 vote366 views1 answer
Oracle select first row order by
SQL
1 vote333 views1 answer
What is a Database?
SQL
0 vote310 views1 answer
Get foreign table names mysql
SQL
1 vote299 views1 answer
Primary key reset in SQL database
SQL
3 votes302 views1 answer
Convert sqlite table to pandas dataframe
SQL
2 votes314 views1 answer
Sql missing records from another table
SQL
0 vote360 views1 answer
Insufficient privileges while creating view in sql oracle
SQL
0 vote331 views1 answer
Sql convert unix time to date
SQL
0 vote326 views1 answer
Ms sql filter all sympbol
SQL