Re: BUG #7550: NULL result when coercing a subquery result into an array

tom@tomforb.es writes:
> I have two queries:
> http://pgsql.privatepaste.com/7d1473defa
> http://pgsql.privatepaste.com/85e1d43b7a

> The first query returns NULL and the second one returns an int[] with 623
> elements in it. The only difference between the two queries is the last
> string - 'J. P. Bickella' returns NULL and 'J. P. Bickell' returns an
> int[].

That's ... bizarre.  I assume you were running this same query without
issues on earlier PG versions?  Which?

> If needed I can host the database this query is executing on for people to
> download upon request, but it is 1.2gb in size.

I suspect that you could reproduce the problem with a much smaller
extract from the table, perhaps a couple thousand rows.  Please try
to create a self-contained test case along those lines --- it'll be
easier all around than dealing with 1GB of data.

            regards, tom lane