Databases
StackOverflow2013
Postsdbo
POChanging time zone value of data
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POChanging time zone value of data
    primarykey
    data
    text
    <p>I have to import <strong>data without time zone information</strong> in it (however, I know the specific time zone of the data I want to import), but I need the <code>timestamp with time zone</code> format in the database. Once I import it and set the timestamp data type to <code>timestamp with time zone</code>, Postgres will automatically assume that the data in the table is from my time zone and assign my time zone to it. Unfortunately the data I want to import is not from my time frame, so this does not work.</p> <p>The database also contains data with different time zones. However, the time zone within one table is always the same.</p> <p>Now, I could set the time zone of the database to the time zone of the data I want to import before importing the data (using <code>SET time zone</code> command) and change it back to my time zone once the import is done, and I am pretty sure already stored data will not be affected by the time zone change of the database. But this seems to be a pretty dirty approach and may cause problems later on.</p> <p>I wonder if there is a more elegant way to specify the time zone for the import without having the time zone data in the data itself?</p> <p>Also, I have not found a way to edit time zone information after import. Is there a way not to convert, but simply to edit the time zone for a whole table, assuming that the whole table has the same time zone offset (i.e. if a wrong one has been assigned upon data entry/import)?</p> <p>Edit:<br> I managed to specify a time zone upon import, the whole command being:</p> <pre><code>set session time zone 'UTC'; COPY tbl FROM 'c:\Users\Public\Downloads\test.csv' DELIMITERS ',' CSV; set session time zone 'CET'; </code></pre> <p>The data then gets imported using the session time zone. I assume this has no effect on any other queries on the database at the same time from other connections?</p> <p>Edit 2:<br> I found out how to change the time zone of a table afterwards:<br> <a href="https://stackoverflow.com/questions/6492657/postgresql-update-time-zone-offset?rq=1">PostgreSQL update time zone offset</a></p> <p>I suppose it is more elegant to change the time zone of the table after import then to use session to change the local time zone temporary. Assuming the whole table has the same time zone of course.</p> <p>So the code would be now something along the line of:</p> <pre><code>COPY tbl FROM 'c:\Users\Public\Downloads\test.csv' DELIMITERS ',' CSV; UPDATE tbl SET &lt;tstz_field&gt; = &lt;tstz_field&gt; AT TIME ZONE '&lt;correct_time_zone&gt;'; </code></pre>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USErwin Brandstetter
    1. USharbun
    plurals
    1. PL
      singulars
      1. LTLinked
    2. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POChanging time zone value of data
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. POChanging time zone value of data
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. POChanging time zone value of data
      1. USJames Richard
      1. VTFavorite
    1. COHow are you performing your import? can't you assign the timezone while importing?
      singulars
      1. POChanging time zone value of data
      1. USertx
    2. COThanks for the tip, I've updated my post but I am not sure what kind of effect setting session time zone has on other processes within the database at the time of execution?
      singulars
      1. POChanging time zone value of data
      1. USharbun
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload