On Tue, Apr 19, 2005 at 01:27:09PM -0700, Zuoxin.Wang@xxxxxx wrote: > test=# select used from patient; > used > ------ > N > N > (2 rows) Try select '{' || used || '}' from patient; > test=# select first_name, last_name, used, birthday from patient; > first_name | last_name | used | birthday > ------------+-----------+------+------------ > | 1960-02-01DI | N > | 1960-02-01DI | N > (2 rows) Looks like you have some non-printable character in the used column. -- Alvaro Herrera (<alvherre[@]dcc.uchile.cl>) "La conclusión que podemos sacar de esos estudios es que no podemos sacar ninguna conclusión de ellos" (Tanenbaum)