Alter timezone constraint PostgreSQL

问题

I have an attribute in a table like this:

created_date timestamp without timezone

Now my requirement is to change the created_date field to the timestamp with timezone on the production database but I don't know how to alter this constraint.

回答1:

To change a column type use ALTER TABLE command:

ALTER TABLE yourtable ALTER COLUMN column_name TYPE timestamptz;

You can change more than 1 column type in one operation by delimiting ALTER COLUMN statements with a comma:

ALTER TABLE yourtable 
  ALTER COLUMN column_name TYPE timestamptz,
  ALTER COLUMN column_name2 TYPE datatype;

For more information check documentation.

来源：https://stackoverflow.com/questions/35676323/alter-timezone-constraint-postgresql