Re: INSERT... WHERE

On 15/01/13 09:43, Chris Angelico wrote:
> On Tue, Jan 15, 2013 at 5:26 AM, Robert James <srobertjames(at)gmail(dot)com> wrote:
>> On 1/13/13, Chris Angelico <rosuav(at)gmail(dot)com> wrote:
>>> On Mon, Jan 14, 2013 at 3:37 PM, Robert James <srobertjames(at)gmail(dot)com>
>>> wrote:
>>>> Thanks. But how do I do that where I have many literals? Something like:
>>>>
>>>> INSERT INTO seltest (id, a, b) SELECT (1,2,3),(4,5,6),(7,8,9) WHERE b
>>>> IN (SELECT ...)
>>> You can use WITH clauses in crazy ways with PostgreSQL. I haven't
>>> actually tried it, but you should be able to put your VALUES behind a
>>> WITH, then SELECT from that WHERE blah blah, and INSERT that SELECT.
>>>
>>> As they say, knock yourself out! :)
>>>
>>> ChrisA
>>
>> I don't quite follow - could you please elaborate?
> Here's something that I just tried:
>
> postgres=# create table seltest (id int,a int,b int);
> CREATE TABLE
> postgres=# with v(id,a,b) as (values (1,2,3),(4,5,6),(7,8,9)) insert
> into seltest select * from v where b>4;
> INSERT 0 2
> postgres=# select * from seltest;
> id | a | b
> ----+---+---
> 4 | 5 | 6
> 7 | 8 | 9
> (2 rows)
>
> Effectively, the values() statement is given a name (and a set of
> column names), and can then be selected from like any other table or
> CTE.
>
> ChrisA
>
>

* select * from seltest;*
can be simply written as
* table seltest;*

Cheers,
Gavin
(Who is running away smartly,
as no likes a smart alec!)