tomas@xxxxxxxxxx writes: > When PREPARing statements, the type guessing machinery seems to behave > differently for VARCHAR and TEXT. Is this intentional? Your example works for me, in all branches back to 8.2: regression=# create table foo(a text, b varchar); CREATE TABLE regression=# PREPARE s1 AS SELECT a, b FROM foo WHERE a = $1; PREPARE regression=# PREPARE s2 AS SELECT a, b FROM foo WHERE b = $1; PREPARE I wonder if you have some nondefault operators installed that are making the query ambiguous. regards, tom lane -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general