Howto check for existing aggregate functions in Postgres?

Question

In Postgresql you can create additional Aggregate Functions with

CREATE AGGREGATE name(...);

But this gives an error if the aggregate already exists inside the database, so how can I check if a Aggregate already exists in the Postgres Database?

Kent Fredric · Accepted Answer · 2008-11-21 11:35:52Z

9

SELECT * FROM pg_proc WHERE proname = 'name' AND proisagg;

answered Nov 21, 2008 at 11:35

Kent Fredric

57.6k14 gold badges112 silver badges151 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

gavenkoa · Accepted Answer · 2019-06-11 12:42:11Z

-1

drop aggregate if exists my_agg(varchar);

create aggregate my_agg(varchar) (...);

select * from pg_aggregate
where aggfnoid = 'my_agg'::regproc;

edited Jun 11, 2019 at 12:42

answered Jun 11, 2019 at 12:34

gavenkoa

49.7k28 gold badges274 silver badges343 bronze badges

Collectives™ on Stack Overflow

Howto check for existing aggregate functions in Postgres?

2 Answers 2

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related