Thread: Weird behaviour of = ANY ( SUBQUERY ) ?

Version - 8.5devel.

Why this doesn't work:

# SELECT 1 = ANY( ( SELECT '{1,2}'::int4[]) );
ERROR:  operator does not exist: integer = integer[]
LINE 1: SELECT 1 = ANY( ( SELECT '{1,2}'::int4[]) );
                 ^
HINT:  No operator matches the given name and argument type(s). You might need to add explicit type casts.

direct usage of array of course works:
# select 1 = any ( '{1,2}'::int4[] );
 ?column?
----------
 t
(1 row)

depesz

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hubert depesz lubaczewski <depesz@depesz.com> writes:
> Why this doesn't work:

> # SELECT 1 = ANY( ( SELECT '{1,2}'::int4[]) );
> ERROR:  operator does not exist: integer = integer[]
> LINE 1: SELECT 1 = ANY( ( SELECT '{1,2}'::int4[]) );
>                  ^

Why would you expect it to work?  The datatypes aren't compatible.

> direct usage of array of course works:
> # select 1 = any ( '{1,2}'::int4[] );

ANY with a sub-SELECT and ANY without one are two completely different
things.

            regards, tom lane