function ave(integer) does not exist

Started by Benedict Hollandalmost 14 years ago3 messagesgeneral
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#1Benedict Holland
benedict.m.holland@gmail.com

Hi All,

This one is confusing. The only difference in my db is that it comes from a
user specific template not pg_default.

I run this:

***********************************************************************************************************************************************************
create temp table test (var int);
insert into test (var) values
(1), (2), (3), (4), (5), (6), (243);

select ave(var)
from test;
***********************************************************************************************************************************************************

and I get this as the error:

***********************************************************************************************************************************************************
ERROR: function ave(integer) does not exist
LINE 1: select ave(var)
^
HINT: No function matches the given name and argument types. You might
need to add explicit type casts.

********** Error **********

ERROR: function ave(integer) does not exist
SQL state: 42883
Hint: No function matches the given name and argument types. You might need
to add explicit type casts.
Character: 8
***********************************************************************************************************************************************************

So why is this happening? I can run a "select sum(var)" and it works.

Thanks,
~Ben

In reply to: Benedict Holland (#1)
Re: function ave(integer) does not exist

On Tue, Jul 03, 2012 at 02:07:54PM -0400, Benedict Holland wrote:

This one is confusing. The only difference in my db is that it comes from a
user specific template not pg_default.

"difference"? between what and what?

select ave(var)
from test;
***********************************************************************************************************************************************************

and I get this as the error:

***********************************************************************************************************************************************************
ERROR: function ave(integer) does not exist
LINE 1: select ave(var)
^

Never heard of ave() function. What should it do?

So why is this happening? I can run a "select sum(var)" and it works.

Well, sum() works, because such function (aggregate actually) exists.

Hmm .. perhaps you're looking for avg() - to get average value?

Best regards,

depesz

--
The best thing about modern society is how easy it is to avoid contact with it.
http://depesz.com/

#3Benedict Holland
benedict.m.holland@gmail.com
In reply to: hubert depesz lubaczewski (#2)
Re: function ave(integer) does not exist

Oh heck. Yes, I misread avg(expression as ave. Sorry for this.

~ben

On Tue, Jul 3, 2012 at 2:13 PM, hubert depesz lubaczewski <depesz@depesz.com

Show quoted text

wrote:

On Tue, Jul 03, 2012 at 02:07:54PM -0400, Benedict Holland wrote:

This one is confusing. The only difference in my db is that it comes

from a

user specific template not pg_default.

"difference"? between what and what?

select ave(var)
from test;

***********************************************************************************************************************************************************

and I get this as the error:

***********************************************************************************************************************************************************

ERROR: function ave(integer) does not exist
LINE 1: select ave(var)
^

Never heard of ave() function. What should it do?

So why is this happening? I can run a "select sum(var)" and it works.

Well, sum() works, because such function (aggregate actually) exists.

Hmm .. perhaps you're looking for avg() - to get average value?

Best regards,

depesz

--
The best thing about modern society is how easy it is to avoid contact
with it.

http://depesz.com/