From: | "Scott Marlowe" <scott(dot)marlowe(at)gmail(dot)com> |
---|---|
To: | "Masis, Alexander (US SSA)" <alexander(dot)masis(at)baesystems(dot)com> |
Cc: | pgsql-general(at)postgresql(dot)org |
Subject: | Re: MySQL LAST_INSERT_ID() to Postgres |
Date: | 2008-08-28 19:09:03 |
Message-ID: | dcc563d10808281209o5099a45asb3accdea36190e01@mail.gmail.com |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-general |
On Thu, Aug 28, 2008 at 10:14 AM, Masis, Alexander (US SSA)
<alexander(dot)masis(at)baesystems(dot)com> wrote:
> I was mapping C++ application code that works with mySQL to work with
> Postgres.
> There were a number of articles on line regarding the conversion from
> mySQL to Postgres like:
SNIP
> Well, in MySQL it's easy you just do:
> "SELECT LAST_INSERT_ID();"
> In Postgres, however it is not that simple. You have to know the
> name of so called "insert sequence". Postgres has a system function for
> that( SQL line below ).
> In Postgres you will have to provide the table and column name(
> "auto_increment" type in MySQL or "serial or bigserial" in Postgres).
>
> Here is that SQL query that returns the last inserted ID:
>
> "SELECT CURRVAL(
> pg_get_serial_sequence('my_tbl_name','id_col_name'));"
That's the hard way. Starting with pgsql 8.2 you can do it much more easily:
create table tester (id serial primary key, info text);
insert into tester (info) values ('this is a text string') returning id;
tada! All done, that insert will return the id for you.
From | Date | Subject | |
---|---|---|---|
Next Message | Dave Page | 2008-08-28 19:11:45 | Re: temp schemas |
Previous Message | Scott Marlowe | 2008-08-28 19:06:55 | Re: importing dates |