insert - on conflict question

On Wed, Feb 1, 2017 at 4:15 PM, Johann Spies <johann.spies@gmail.com> wrote:

How do I formulate the on conflict do update-section of this query? When
I try set title=q.title, q is unknown. When I try and change 'title' in
the select-part to something else and try title=ti I get the message that
ti cannot be used in this part of the query.

INSERT INTO wos_2017_1.article (ut,
title,
author_count)WITH p AS (
SELECT
ARRAY [ ARRAY [ 't', 'some_namespace' ] ] AS ns),
q AS (
SELECT
ut,
unnest (xpath ('//t:title[@type= "item"]/text()',
xml,
p.ns))::text title,
unnest (xpath ('//t:summary/t:names/@count',
xml,
p.ns))::TEXT::INTEGER AS author_count
FROM
p,
source.cover_2016)SELECT
ut,
regexp_replace (regexp_replace (regexp_replace (title, '<', '<', 'g'), '&', '&', 'g'), '>', '>', 'g')
title,
author_countFROM
q

ON CONFLICT (ut)
DO UPDATESET
title = title,
author_count = author_count;

In the ON CONFLICT... SET we need to use EXCLUDED keyword.

ON CONFLICT (ut)
DO UPDATE
SET
title = EXCLUDED.title,
author_count = EXCLUDED.author_count;

--
Thank you,

Beena Emerson

Have a Great Day!