[..]
> Do I have to change the signature of my aggregate to take anycompatiblearray as argument?
Yeah you'll need to do that or write your own transition function that
takes an anyarray. The docs mention:
"the sfunc must take N+1 arguments, the first being of type state_data_type"
array_cat no longer takes anyarray.
regression=# \dfS array_cat
List of functions
Schema | Name | Result data type | Argument data
types | Type
------------+-----------+--------------------+----------------------------------------+------
pg_catalog | array_cat | anycompatiblearray | anycompatiblearray,
anycompatiblearray | func
(1 row)
This was changed in [1].
David
[1] https://git.postgresql.org/gitweb/?p=postgresql.git;a=commitdiff;h=9e38c2bb5093ceb0c04d6315ccd8975bd17add66
Ok, thanks.