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-rw-r--r--lib/arel/algebra/relations/operations/alias.rb7
1 files changed, 7 insertions, 0 deletions
diff --git a/lib/arel/algebra/relations/operations/alias.rb b/lib/arel/algebra/relations/operations/alias.rb
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index 0000000000..0331d98b85
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+++ b/lib/arel/algebra/relations/operations/alias.rb
@@ -0,0 +1,7 @@
+module Arel
+ class Alias < Compound
+ attributes :relation
+ deriving :initialize
+ alias_method :==, :equal?
+ end
+end