1 files changed, 13 insertions, 0 deletions
diff --git a/lib/arel/extensions/array.rb b/lib/arel/extensions/array.rb
new file mode 100644
index 0000000000..793c06aad8
--- /dev/null
+++ b/lib/arel/extensions/array.rb
@@ -0,0 +1,13 @@
+class Array
+  def to_hash
+    Hash[*flatten]
+  end
+  
+  def to_sql(formatter = nil)
+    "(" + collect { |e| e.to_sql(formatter) }.join(', ') + ")"
+  end
+  
+  def inclusion_predicate_sql
+    "IN"
+  end
+end
+\ No newline at end of file