Initial commit

db/migrate/20180524170927_improve_indexes.rb

@@ -0,0 +1,8 @@
+class ImproveIndexes < ActiveRecord::Migration[4.2]
+  def change
+    remove_index :trades, column: [:market_id]
+    remove_index :accounts, column: [:currency_id]
+    add_index :currencies, [:enabled, :code]
+    remove_index :currencies, column: [:enabled]
+  end
+end