From df9d662dab25aaaeae16598c62b956efc360d03c Mon Sep 17 00:00:00 2001
From: Guo Xiang Tan <tgx_world@hotmail.com>
Date: Wed, 30 Aug 2017 15:54:27 +0800
Subject: [PATCH] FIX: Use `CASCADE` when dropping function.

---
 lib/column_dropper.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/column_dropper.rb b/lib/column_dropper.rb
index ff001ca46da..a291d212bc2 100644
--- a/lib/column_dropper.rb
+++ b/lib/column_dropper.rb
@@ -32,7 +32,7 @@ class ColumnDropper
       columns.each do |column|
         ActiveRecord::Base.exec_sql <<~SQL
         DROP TRIGGER IF EXISTS #{readonly_trigger_name(table, column)} ON #{table};
-        DROP FUNCTION IF EXISTS #{readonly_function_name(table, column)};
+        DROP FUNCTION IF EXISTS #{readonly_function_name(table, column)} CASCADE;
         SQL
 
         # safe cause it is protected on method entry, can not be passed in params