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db getext

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Martin Thoma 2013-07-27 17:14:28 +02:00
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commit fe6543ad0b
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documents/musterloesung-db-2012-09-24/d2b.sql Normal file
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CREATE VIEW FriendshipSymmetric AS (
(
SELECT person1, person2
FROM Friendship
)
UNION
(
SELECT person2 AS person1, person1 AS person2
FROM Friendship
)
)