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Fixed a copy paste errors and filtered out all edges with form (x,x)

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Before, there were edges in this form (x,x) included but they shouldn't be included.
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Nilan 2013-07-27 19:42:28 +02:00
parent fe6543ad0b
commit 8d0fccde3a
1 changed files with 2 additions and 1 deletions
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3
documents/musterloesung-db-2012-09-24/d2c2.sql
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@ -4,9 +4,10 @@ FROM (
) f1
JOIN ON
(
SELECT personni FROM FriendshipSymmetric WHERE person1 = <id>
SELECT person2 FROM FriendshipSymmetric WHERE person1 = <id>
) f2
EXCEPT
(
SELECT * FROM FriendshipSymmetric
)
WHERE f1.person2 != f2.person2