Write a postgre SQL statement to change the data type of the column region_id to text in the table locations

  • Postgre SQL

Write a  postgre SQL statement to change the data type of the column region_id to text in the table locations.

Here is the structure of the table locations.

postgres=# \d locations
     Column     |         Type          | Modifiers
----------------+-----------------------+-----------
 location_id    | numeric(4,0)          |
 street_address | character varying(40) |
 postal_code    | character varying(12) |
 city           | character varying(30) |
 state_province | character varying(25) |
 country_id     | character varying(2)  |
 region_id      | integer               |

الأجوبة

ALTER TABLE locations
ALTER region_id TYPE text;

Output:

Now see the structure of the table locations after alteration.

     Column     |         Type          | Modifiers
----------------+-----------------------+-----------
 location_id    | numeric(4,0)          |
 street_address | character varying(40) |
 postal_code    | character varying(12) |
 city           | character varying(30) |
 state_province | character varying(25) |
 country_id     | character varying(2)  |
 region_id      | text                  |
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أسئلة مشابهة

Write a postgre SQL statement to change the name of the column state_province to state, keeping the same size and data type and size
Write a postgre SQL statement to add a column region_id to the table locations
Write a postgre SQL statement to drop the existing primary from the table locations on a combination of columns location_id and country_id
Write a postgre SQL statement to drop the column city from the table locations

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