--On Dienstag, November 06, 2007 16:31:05 +0100 Peter Eisentraut
<[EMAIL PROTECTED]> wrote:
I noticed this problem in 8.2 and 8.3:
pei=# select mod( trunc( 1 ), 2 );
ERROR: 42883: function mod(double precision, integer) does not exist
LINE 1: select mod( trunc( 1 ), 2 );
^
It apparently casts the 1 to double precision to pick the variant
trunc(dp)=>dp instead of trunc(numeric)=>numeric. I was under the
impression that we didn't want to cast integers to float types
implicitly because this loses information. Clearly, the numeric variant
should be preferred anyway. What's wrong here?
Indeed, if i go and make the implicit cast from int4 to float8 explicit or
implicit on assignment it's going to work:
[EMAIL PROTECTED]:bernd #= UPDATE pg_cast SET castcontext = 'e' WHERE
castsource = 23 AND casttarget = 701;
UPDATE 1
Time: 7,320 ms
[EMAIL PROTECTED]:bernd #= select mod( trunc( 1 ), 2 );
mod
-----
1
(1 row)
--
Thanks
Bernd
---------------------------(end of broadcast)---------------------------
TIP 6: explain analyze is your friend
