Hi, David,
On Tue, Jul 3, 2018 at 1:46 PM, David G. Johnston
<david.g.johnston@xxxxxxxxx> wrote:
> On Tue, Jul 3, 2018 at 11:41 AM, Igor Korot <ikorot01@xxxxxxxxx> wrote:
>>
>>
>> I presume threre is a query which check for the function/trigger
>> existence? Something like:
>>
>> IF NOT EXIST(SELECT * FROM ) CREATE OR REPLACE FUNCTION....;
>
>
> CREATE OR REPLACE is how you re-create a function that (whose
> name/signature) might already exist; CREATE already assumes one doesn't
> exist.
Why do I need to re-create a function with exactly the same name and body?
Can't I just check if such function exists?
You can, and depending on how often you intend to execute said code, it is probably the better way. It also requires pl/pgsql while CREATE OR REPLACE "just works" as a single SQL command. It seems easier to give you the simple answer than to work out the details for the more complex one.
David J.
