Re: take my index, please

Lyn A Headley <laheadle@cs.uchicago.edu> writes:
>                   Table "allocation"
>    Attribute    |           Type           | Modifier
> ----------------+--------------------------+----------
>  allocation_oid | bigint                   | not null

> webco=# explain select * from allocation where allocation_oid = 5;
> NOTICE:  QUERY PLAN:

> Seq Scan on allocation  (cost=0.00..2295.79 rows=1 width=104)

Try

select * from allocation where allocation_oid = 5::int8;

As you wrote it, it's a cross-datatype operator (int8 vs int4)
and the planner is not very smart about those at the moment.

You should probably also ask yourself whether you *really* need int8
for this column, at least for the next release or two that it's likely
to be before something is done about this problem.

            regards, tom lane