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@@ -2055,9 +2055,10 @@ module ActiveRecord #:nodoc:
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         end
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         def replace_named_bind_variables(statement, bind_vars) #:nodoc:
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-          statement.gsub(/:([a-zA-Z]\w*)/) do
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-            match = $1.to_sym
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-            if bind_vars.include?(match)
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+          statement.gsub(/(:?):([a-zA-Z]\w*)/) do
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+            if $1 == ':' # skip postgresql casts
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+              $& # return the whole match
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+            elsif bind_vars.include?(match = $2.to_sym)
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               quote_bound_value(bind_vars[match])
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             else
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               raise PreparedStatementInvalid, "missing value for :#{match} in #{statement}"

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@@ -1,5 +1,6 @@
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 require "cases/helper"
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 require 'models/author'
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+require 'models/categorization'
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 require 'models/comment'
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 require 'models/company'
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 require 'models/topic'
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@@ -394,6 +395,12 @@ class FinderTest < ActiveRecord::TestCase
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     assert_equal '1,1,1', bind('?', os)
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   end
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+  def test_named_bind_with_postgresql_type_casts
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+    l = Proc.new { bind(":a::integer '2009-01-01'::date", :a => '10') }
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+    assert_nothing_raised(&l)
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+    assert_equal "#{ActiveRecord::Base.quote_value('10')}::integer '2009-01-01'::date", l.call
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+  end
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+
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   def test_string_sanitation
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     assert_not_equal "#{ActiveRecord::Base.connection.quoted_string_prefix}'something ' 1=1'", ActiveRecord::Base.sanitize("something ' 1=1")
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     assert_equal "#{ActiveRecord::Base.connection.quoted_string_prefix}'something; select table'", ActiveRecord::Base.sanitize("something; select table")