Tom Lane wrote:
"Marc G. Fournier" <[EMAIL PROTECTED]> writes:
On Mon, 29 Aug 2005, Tom Lane wrote:
No, because there's no built-in cast from smallint to bool.
'k, I just took a read through the "CREATE CAST" man page, and don't think
I can use that for this,
Sure you can. Make a SQL or PLPGSQL function that does the conversion
you want and then create a cast using it.
That probably won't help him much with "values(0)":
andrew=# create function ibool(smallint) returns boolean language sql as
$$ select $1 <> 0 $$;
CREATE FUNCTION
andrew=# create cast (smallint as boolean) with function ibool(smallint)
as implicit;
CREATE CAST
andrew=# insert into foobool values(0);
ERROR: column "x" is of type boolean but expression is of type integer
HINT: You will need to rewrite or cast the expression.
Is there a way to make the builtin int to bool cast implicit?
cheers
andrew
---------------------------(end of broadcast)---------------------------
TIP 6: explain analyze is your friend