From 7bab6b8cd950be79c040377b43b6ed6030fb98f4 Mon Sep 17 00:00:00 2001
From: Yoshiyuki Kinjo <yskkin@gmail.com>
Date: Wed, 20 Sep 2017 00:09:17 +0900
Subject: Add :comment option for add_column [ci skip]

---
 .../lib/active_record/connection_adapters/abstract/schema_statements.rb | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb b/activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb
index f57c7a5d4d..c9607df28c 100644
--- a/activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb
+++ b/activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb
@@ -522,6 +522,8 @@ module ActiveRecord
       #   Specifies the precision for the <tt>:decimal</tt> and <tt>:numeric</tt> columns.
       # * <tt>:scale</tt> -
       #   Specifies the scale for the <tt>:decimal</tt> and <tt>:numeric</tt> columns.
+      # * <tt>:comment</tt> -
+      #   Specifies the comment for the column. This option is ignored by some backends.
       #
       # Note: The precision is the total number of significant digits,
       # and the scale is the number of digits that can be stored following
-- 
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