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.
