- From: Richard Cyganiak <richard@cyganiak.de>
- Date: Thu, 7 Jun 2012 18:31:04 +0200
- To: Boris Villazón-Terrazas <bvillazon@fi.upm.es>, Eric Prud'hommeaux <eric@w3.org>
- Cc: "public-rdb2rdf-wg@w3.org WG" <public-rdb2rdf-wg@w3.org>
And D021 has a similar case, two triples over NULL.
Best,
Richard
On 7 Jun 2012, at 17:32, Richard Cyganiak wrote:
> Hi Boris, Eric,
>
> The DM spec says that the row graph contains:
>
> [[
> a reference triple for each <column name list> in a table's foreign keys where none of the column values is NULL.
> ]]
>
> In create.sql for D024 we have:
>
> [[
> INSERT INTO "Source" ("ID", "attrA", "attrB")
> VALUES (1101, 'K2A22', NULL );
> ]]
>
> And then we have a triple in directGraph.ttl:
>
> [[
> <Source/ID=1101> <Source#ref-attrA;attrB> <Target/PK=1011> .
> ]]
>
> I believe this triple shouldn't be there, because one of the involved column values is NULL.
>
> Or am I misunderstanding something?
>
> Best,
> Richard
Received on Thursday, 7 June 2012 16:31:49 UTC