On 05/23/2018 10:00 AM, David G. Johnston wrote:
> On Wednesday, May 23, 2018, tango ward <tangoward15@gmail.com
> <mailto:tangoward15@gmail.com>> wrote:
>
> I just want to ask if it's possible to insert data if it's not
> existing yet.
>
>
> This seems more like a philosophical question than a technical one...
> but the answer is yes:
>
> CREATE TABLE test_t (a varchar, b varchar, c integer);
> INSERT INTO test_t
> SELECT '1', '2', 3 WHERE false; --where false causes the data to
> effectively "not exist"
>
> As for ON CONFLICT: conflicts can only happen between things that exist.
Well that made my day:)
>
> David J.
>
--
Adrian Klaver
adrian.klaver@aklaver.com