Hello I don't know where is a problem, but I can put a two advices
a) start by extending some known extension b) look to source code, where and why a exception was raised. Verbose mode can help [pavel@localhost ~]$ psql postgres psql (9.4devel) Type "help" for help. postgres=# \set VERBOSITY verbose postgres=# SELECT 10/0; ERROR: 22012: division by zero LOCATION: int4div, int.c:719 postgres=# Regards Pavel 2014-03-16 14:41 GMT+01:00 Mohsen SM <mohsensoodk...@gmail.com>: > I create one new type with CREATE TYPE command. > for my type its INTERNALLENGTH is VARIABLE . > but I want to my type behavior similar to char and when I type this query: > CREATE TABLE tbl (col1 NEWTYPE); > then when I write this query, so it get an error for it's length: > insert into tbl values('dd'); > its error is : > ERROR: value too long for type character(1) > but my NEWTYPE don't get this error and work similar to varchar. > how I can do it? > I check for char type the bpchar() function. when I work with char type > and want to insert one word longest one character so, bpchar() called. > but for my NEWTYPE don't call the newtype() function. > how can I correct this problem? > >