Обсуждение: CREATE TYPE similar CHAR type
I want use CREATE TYPE to create one type similar to char.
I want to when I create type, then my type behave similar to char:CREATE TABLE test (oneChar char);
when I want insert one column with length>1 to it, so it gets this error:
ERROR: value too long for type character(1)
ERROR: value too long for type character(1)
I want my type behave similar this but it behaves similar varchar type.
On 6 March 2014 11:24, Mohsen SM <mohsensoodkhah@gmail.com> wrote:
I want use CREATE TYPE to create one type similar to char.I want to when I create type, then my type behave similar to char:CREATE TABLE test (oneChar char);when I want insert one column with length>1 to it, so it gets this error:
ERROR: value too long for type character(1)I want my type behave similar this but it behaves similar varchar type.
If you did that, you'd have a char field padded out to fill up 10 megabytes-worth of characters. I doubt that's what you want.
It's not clear what you want this for though. If you want an arbitrary number of characters, just use the text data type.
-- Thom
mohsencs wrote > I want use CREATE TYPE to create one type similar to char. > I want to when I create type, then my type behave similar to char: > > CREATE TABLE test (oneChar char); > > when I want insert one column with length>1 to it, so it gets this error: > ERROR: value too long for type character(1) > > I want my type behave similar this but it behaves similar varchar type. If you can get over the need for using CREATE TYPE you'll find that using CREATE DOMAIN with a check constraint will probably meet your needs perfectly. David J. -- View this message in context: http://postgresql.1045698.n5.nabble.com/CREATE-TYPE-similar-CHAR-type-tp5794946p5794981.html Sent from the PostgreSQL - hackers mailing list archive at Nabble.com.