Comments on: Double many-to-one? http://jasondentler.com/blog/2009/08/double-many-to-one/ I'm just here for the code Mon, 06 Sep 2010 12:21:16 +0000 http://wordpress.org/?v=2.9.2 hourly 1 By: Tuna Toksoz http://jasondentler.com/blog/2009/08/double-many-to-one/comment-page-1/#comment-113 Tuna Toksoz Fri, 21 Aug 2009 09:56:44 +0000 http://jasondentler.com/blog/?p=303#comment-113 If I detail the situation, even if we know the id's, we will anyway have to insert two records into database in 2 insert statemetns. INSERT INTO "Lens" (Monocle_id, ID) VALUES (@p0, @p1); @p0 = '', @p1 = 'f6f37089-a66b-4007-b732-9c6b008d1448' INSERT INTO "Monocle" (Lens_id, ID) VALUES (@p0, @p1); @p0 = 'f6f37089-a66b-4007-b732-9c6b008d1448', @p1 = 'bb2879f6-d27a-4eb0-8bf0-9c6b008d143b' If we say p0=something and this something doesn't exist in Monocle table, we'll run into trouble with FK violation exception. This is why we can't make the both sides not-null, too. If I detail the situation, even if we know the id’s, we will anyway have to insert two records into database in 2 insert statemetns.

INSERT INTO “Lens” (Monocle_id, ID) VALUES (@p0, @p1); @p0 = ”, @p1 = ‘f6f37089-a66b-4007-b732-9c6b008d1448′
INSERT INTO “Monocle” (Lens_id, ID) VALUES (@p0, @p1); @p0 = ‘f6f37089-a66b-4007-b732-9c6b008d1448′, @p1 = ‘bb2879f6-d27a-4eb0-8bf0-9c6b008d143b’

If we say p0=something and this something doesn’t exist in Monocle table, we’ll run into trouble with FK violation exception. This is why we can’t make the both sides not-null, too.

]]> By: Jason http://jasondentler.com/blog/2009/08/double-many-to-one/comment-page-1/#comment-103 Jason Thu, 20 Aug 2009 18:30:59 +0000 http://jasondentler.com/blog/?p=303#comment-103 This is as good as it gets. Tuna figured out why it wasn't possible to eliminate the update. Thanks! http://twitter.com/tehlike/statuses/3431907077 This is as good as it gets. Tuna figured out why it wasn’t possible to eliminate the update. Thanks!

http://twitter.com/tehlike/statuses/3431907077

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