Re: Unique UUID value - PostgreSQL 9.2

On 16 March 2016 at 10:30, David G. Johnston <david.g.johnston@gmail.com> wrote:

On Tue, Mar 15, 2016 at 2:01 PM, drum.lucas@gmail.com <drum.lucas@gmail.com> wrote:

Not reading the documentation for functions you've never heard of makes the list.

David J.

INSERT INTO junk.test1 (account_id, code, info)
SELECT account_id, uuid_generate_v4(), info
FROM junk.test2;

It works but I get data like:

abc77f31-0ee6-44fd-b954-08a3a3aa7b28
f307fb42-23e5-4742-ab8f-8ce5c0a8e852

Is it possible to do the same, but with TEXT on the beginning?

Example:

test_32152563bdc4db11aa 

test_321525694417ad6b5f 

​Yes, it is possible.  Did you even try?  

"test" in that example is called a string.  There are bunch of functions and operators that work with strings.  They are documented here:

http://www.postgresql.org/docs/9.4/static/functions-string.html

You'll find the ones that "concatenate" - which basically is a fancy way to say: "to combine" or "to join together" - to be quite useful when faced with problems of this sort.

David J.

I wouldn't ask if I wouldn't have tested it!

Will have a look.