Alter user-defined type column type in postgres

Question

I have two user-defined types:

CREATE TYPE s.s_stavp_kv AS ENUM('k','v');

and

CREATE TYPE s.stavp_kv AS ENUM('k','v');

Table looks like this

CREATE TABLE s.zv_stavp
(
   version integer NOT NULL,
   id integer NOT NULL,
   tudu integer NOT NULL,
   kv s_stavp_kv NOT NULL,
   cobj text NOT NULL,
   iobj text NOT NULL,
   typev text
)

Now i need to change type of kv to stavp_kv type. Im trying something like:

ALTER TABLE s.zv_stavp 
  ALTER COLUMN kv TYPE stavp_kv USING ...???...;

But I dont know at all what to write as USING expression.

Khamyl · Accepted Answer · 2015-08-26 11:11:53Z

1

The answer is:

ALTER TABLE s.zv_stavp 
  ALTER COLUMN kv TYPE stavp_kv USING kv::text::stavp_kv;

answered Aug 26, 2015 at 11:11

Khamyl

4063 silver badges15 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Alter user-defined type column type in postgres

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related