On Thu, 2 May 2024 at 23:25, Hans Buschmann <buschm...@nidsa.net> wrote:
> postgres=# select -32768::smallint;
> ERROR:  smallint out of range

The precedence order of operations applies the cast before the unary
minus operator.

Any of the following will work:

postgres=# select cast(-32768 as smallint), (-32768)::smallint,
'-32768'::smallint;
  int2  |  int2  |  int2
--------+--------+--------
 -32768 | -32768 | -32768
(1 row)

David


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