DBD::Sybase::st execute failed: Server message number=257 severity=16 state=1 line=0 server=DB_SERVER procedure=DBD2 text=Implicit conversion from datatype 'VARCHAR' to 'UNSIGNED INT' is not allowed.  Use the CONVERT function to run this query.
 Statement=    UPDATE db..table
    SET col =
          :p1
          -- %d
    WHERE search_col = :p2

##</code><code>##

DBD::Sybase::db prepare failed: Server message number=12828 severity=16 state=1 line=1 server=DB_SERVER procedure=DBD2 text=The datatype of a parameter marker used in the dynamic prepare statement could not be resolved.
 Statement=    UPDATE db..table
    SET
      col
      =
      --?
      CONVERT( UNSIGNED INT , :p1 )
      -- %d
    WHERE search_col = :p2

##</code><code>##

# SQL.
create table pqr
(
  x  numeric(9,0)  not null
, y  unsigned int  not null
)
insert into pqr values( 0 , 0 )


# Perl
$n = 1;
#  Works.
$dbh->do( q/UPDATE pqr SET x = ?/ , undef , $n );

$n = 2;
#  Fails;
$dbh->do( q/UPDATE pqr SET y = ?/ , undef , $n );

$n = 3;
#  works (same as %s, this is all string in the end).
$dbh->do( sprintf q/UPDATE pqr SET y = %d/ , $n );