multi-key index

railstutorial · Sep 16, 2011 · 65dac0c · 65dac0c
1 parent 8c6ca9b
commit 65dac0c
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Showing 2 changed files with 2 additions and 4 deletions.
diff --git a/db/migrate/20100829210229_create_microposts.rb b/db/migrate/20100829210229_create_microposts.rb
@@ -6,8 +6,7 @@ def self.up
 
       t.timestamps
     end
-    add_index :microposts, :user_id
-    add_index :microposts, :created_at
+    add_index :microposts, [:user_id, :created_at]
   end
 
   def self.down

diff --git a/db/schema.rb b/db/schema.rb
@@ -19,8 +19,7 @@
     t.datetime "updated_at"
   end
 
-  add_index "microposts", ["created_at"], :name => "index_microposts_on_created_at"
-  add_index "microposts", ["user_id"], :name => "index_microposts_on_user_id"
+  add_index "microposts", ["user_id", "created_at"], :name => "index_microposts_on_user_id_and_created_at"
 
   create_table "relationships", :force => true do |t|
     t.integer  "follower_id"