From 4b75ccf89faa1e742a7b33e5b2a7c073a0711bbb Mon Sep 17 00:00:00 2001
From: Albert Yi <albert@carbonfive.com>
Date: Thu, 13 Sep 2018 11:43:57 -0700
Subject: [PATCH] fix index on tag name prefixes (#3858)

---
 db/migrate/20180913184128_fix_tag_prefix_index.rb | 7 +++++++
 1 file changed, 7 insertions(+)
 create mode 100644 db/migrate/20180913184128_fix_tag_prefix_index.rb

diff --git a/db/migrate/20180913184128_fix_tag_prefix_index.rb b/db/migrate/20180913184128_fix_tag_prefix_index.rb
new file mode 100644
index 000000000..f26799404
--- /dev/null
+++ b/db/migrate/20180913184128_fix_tag_prefix_index.rb
@@ -0,0 +1,7 @@
+class FixTagPrefixIndex < ActiveRecord::Migration[5.2]
+  def change
+    execute "set statement_timeout = 0"
+    execute "DROP INDEX index_tags_on_name_prefix"
+    execute "CREATE INDEX index_tags_on_name_prefix ON tags USING gin (REGEXP_REPLACE(name, '([a-z0-9])[a-z0-9'']*($|[^a-z0-9'']+)', '\\1', 'g') gin_trgm_ops)"
+  end
+end