From 2faf3fe10da4285fe9d8a20801d71770e79232f7 Mon Sep 17 00:00:00 2001
From: Raphael Sofaer <raphael@joindiaspora.com>
Date: Fri, 11 Feb 2011 13:16:56 -0800
Subject: [PATCH] delete dup pvs in migration
---
...11204804_unique_index_post_visibilities.rb | 23 +++++++++++++++++++
1 file changed, 23 insertions(+)
diff --git a/db/migrate/20110211204804_unique_index_post_visibilities.rb b/db/migrate/20110211204804_unique_index_post_visibilities.rb
index 4e11ea684e..624a407d2d 100644
--- a/db/migrate/20110211204804_unique_index_post_visibilities.rb
+++ b/db/migrate/20110211204804_unique_index_post_visibilities.rb
@@ -1,5 +1,28 @@
class UniqueIndexPostVisibilities < ActiveRecord::Migration
def self.up
+ sql = <<-SQL
+ SELECT `post_visibilities`.post_id, `post_visibilities`.aspect_id FROM `post_visibilities`
+ GROUP BY post_id, aspect_id
+ HAVING COUNT(*)>1;
+ SQL
+
+ result = execute(sql)
+ dup_pvs = result.to_a
+ undesired_ids = []
+
+ dup_pvs.each do |arr|
+ post_id, aspect_id = arr
+ pv_ids = execute("
+ SELECT `post_visibilities`.id FROM `post_visibilities`
+ WHERE `post_visibilities`.post_id = #{post_id}
+ AND `post_visibilities`.aspect_id = #{aspect_id};"
+ )
+ pv_ids.pop
+ undesired_ids.concat(pv_ids)
+ end
+ execute("DELETE FROM `post_visibilities` WHERE `post_visibiilties`.id IN (#{undesired_ids.join(",")});") unless undesired_ids.empty?
+
+
remove_index :post_visibilities, [:aspect_id, :post_id]
add_index :post_visibilities, [:aspect_id, :post_id], :unique => true
end
--
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