Re: Unique UUID value - PostgreSQL 9.2

Поиск
Список
Период
Сортировка
От David G. Johnston
Тема Re: Unique UUID value - PostgreSQL 9.2
Дата
Msg-id CAKFQuwZOrs--MPnLsF2uHWzyQ2xvFbsvyRGTC7Ojq3eJTuFrag@mail.gmail.com
обсуждение исходный текст
Ответ на Re: Unique UUID value - PostgreSQL 9.2  ("drum.lucas@gmail.com" <drum.lucas@gmail.com>)
Ответы Re: Unique UUID value - PostgreSQL 9.2
Список pgsql-general
Дерево обсуждения
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.

В списке pgsql-general по дате отправления: