Hi, The docs at http://developer.postgresql.org/pgdocs/postgres/functions-aggregate.html don't prohibit using array values with array_arg(), so I assumed that it would work. However, with CVS HEAD from Friday afternoon, I get
test=> select version() ; version ---------------------------------------------------------------------------------------------------------------------- PostgreSQL 8.4devel on x86_64-unknown-linux-gnu, compiled by GCC gcc (GCC) 4.1.2 20070502 (Red Hat 4.1.2-12), 64-bit (1 row) test=> select v.a, pg_typeof(v.a) from (values (array[1,2]), (array[3,4])) as v(a) ; a | pg_typeof -------+----------- {1,2} | integer[] {3,4} | integer[] (2 rows) test=> select array_agg(v.a) from (values (array[1,2]), (array[3,4])) as v(a) ; ERROR: could not find array type for data type integer[] test=> If this is expected behavior, the docs should mention the restriction. -- todd -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers