Message-Id: <sdafde4f.055@mail.tpchd.org>
Date: Fri, 18 Oct 2002 10:10:15 -0700
From: "Ian Harding" <ianh@tpchd.org>
To: <wweng@kencast.com>, <bruno@wolff.to>
Cc: <pgsql-sql@postgresql.org>
Subject: Re: Is there anyway to do this?
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MSSQL Server does not recognize this syntax, but it does accept=20

select distinct substring(username, 1, 1)

Ian A. Harding
Programmer/Analyst II
Tacoma-Pierce County Health Department
(253) 798-3549
iharding@tpchd.org

>>> Bruno Wolff III <bruno@wolff.to> 10/18/02 10:13AM >>>
On Fri, Oct 18, 2002 at 12:45:56 -0400,
  Wei Weng <wweng@kencast.com> wrote:
> I have a table=20
>=20
>                Table "Users"
>   Column   |          Type          | Modifiers=20
> -----------+------------------------+-----------
>  userid    | character varying(40)  | not null
>  username  | character varying(64)  |=20
>=20
> I want to get all the distinct first character of all usernames. And do
> it in a way that is the most portable to MS SQL server.
>=20
> Is there anyway?

Looking through the documentation on string functions would be helpful.
An example solution is:
select distinct substring(username from 1 for 1) from users;

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