Array or not Array?

From: Atif Jung <atifjung(at)gmail(dot)com>
To: pgsql-novice(at)postgresql(dot)org
Subject: Array or not Array?
Date: 2010-03-03 10:48:31
Message-ID: d1c6b9c51003030248s6e7d77dagbdb8cf81d4ebae51@mail.gmail.com
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If I have a table as follows:

CREATE TABLE test1 (a char(5));

how would I test that the 2nd character of column a is NOT the letter 'b'
for example.

In Informix I would say:

SELECT count(*) FROM test1 where a[2] <> 'b';

In POSTGRES I get an error saying "ERROR: cannot subscript type character
because it is not an array". I understand why I'm getting the error, but
I'm not sure how I do what I want to do?

Thanks to all in advance.

Atif

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