RES: Creating a new type

  Ok, let me explain better! In my table example I will store datas like

  Considering the overlaps of emp_time and this question: what is the salary of employee Rodrigo on 2006-apr-01 ??? This data is inconsistent because the overlaps of time!

  So, I have to guarantee that this situation doesn’t occur! But I don’t want to use triggers because this check must be done on almost all tables that uses the type:

CREATE TYPE time_interval (

    Tbegin date,

    Tend date

   )

 And be easy to the user. For example, any table that is created using this type garantees that the overlaps will not occur! To do this I have to get access for the past data of the table, and so, I have to know wich table is using the type and have data being inserted!

  Is that a way of doing this?

-----Mensagem original-----
De: pgsql-interfaces-owner@postgresql.org [mailto:pgsql-interfaces-owner@postgresql.org] Em nome de Tom Lane
Enviada em: quarta-feira, 28 de junho de 2006 12:00
Para: rodrigo.sakai@zanthus.com.br
Cc: pgsql-interfaces@postgresql.org
Assunto: Re: [INTERFACES] Creating a new type

"Rodrigo Sakai" <rodrigo.sakai@zanthus.com.br> writes:

>   So, when I execute an INSERT operation on this table, the functions that

> deals with this type need the id or name of the table that the data was

> inserted!

Why?  Your example datatype doesn't seem to require any such thing.

>   How can I get this ID or NAME inside this functions???

You can't.  The question itself is bogus because it assumes that data

values only exist within tables.  You could not have a transient value

of the datatype (eg, a function result) because that is not stored in

any table.

                  regards, tom lane

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