Re: INSERT or UPDATE
От | James B. Byrne |
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Тема | Re: INSERT or UPDATE |
Дата | |
Msg-id | 38641.216.185.71.24.1239051949.squirrel@webmail.harte-lyne.ca обсуждение исходный текст |
Ответ на | INSERT or UPDATE ("James B. Byrne" <byrnejb@harte-lyne.ca>) |
Ответы |
Re: INSERT or UPDATE
|
Список | pgsql-general |
On Mon, April 6, 2009 17:00, Dann Corbit wrote: . > > It is a difficult question. > > For instance, there are many possibilities when a collision occurs. > > I guess that for some collisions, sharing the name is OK. > I failed to explicitly state what the PK looked like. entity_id(entities.id) + identifier_type ('AKNA') + identifier_value(entities.common_name) There will only be a PK collision when we attempt to add a duplicate common name for the same entity, which means it already exists and does not need to be added again. -- *** E-Mail is NOT a SECURE channel *** James B. Byrne mailto:ByrneJB@Harte-Lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3
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