Re: Variable-length Types - Mailing list pgsql-sql

From Josh Berkus
Subject Re: Variable-length Types
Date
Msg-id 39EA4E56.CAD35C88@agliodbs.com
Whole thread Raw
In response to Variable-length Types  (Itai Zukerman <zukerman@math-hat.com>)
Responses Re: Variable-length Types
List pgsql-sql
KuroiNeko,

>  I remember from  the old days of Delphi/InterBase, and  even older days of
> Paradox, there were so called input masks, US phone code mask would be like

Input masks still exist for some languages (VB, Paradox) but I've found
that even in those platforms that support them I tend to replace them
with custom functions, because actually using them is too buggy.

>  I'm just not sure what to do if 8 or 9 digits are supplied? Maybe, reject,
> assuming that  such things should  be caught  by UI, and  if we get  such a
> weird thing, there's something really really wrong?

Or, if you're using an interface that doesn't readily support entry
validation (e.g. PHP) then you can nest functions and have the "Save"
button test for a reply indicating that something's wrong.

To wit:

Create Function save_candidate (Lots of candidate data variables) RETURNS VARCHAR (100)
ASDeclare output_string VARCHAR(100)Do a whole bunch of stuffSELECT first_phone = phoneformat(first_phone)IF
first_phone= 'fail' (    SELECT output_string = 'Bad phone number for Primary Phone'    RETURN output_string    )More
code

-Josh

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