Re: type aliases

>
> You probably should define your domain like this:
>
> CREATE DOMAIN myvarchar varchar(42);
>

That's what I thought, so it won't do what I want. I need to be able to set the length at the time of declaration.

So suppose I wanted to implement myvarchar in C. In my _in function, how do I know how big my column declaration is? Eg if someone tries to insert 50 characters into my 42 character field, how do I get the declared length and then tell postgres that the data to be inserted is too big?

Thanks

James