Added indexes for notes.line_code and CI columns

This adds indexes for the following columns:

* notes.line_code
* ci_projects.gitlab_id
* ci_projects.shared_runners_enabled
* ci_builds.type
* ci_builds.status

db/migrate/20151016195451_add_ci_builds_and_projects_indexes.rb

+class AddCiBuildsAndProjectsIndexes < ActiveRecord::Migration
+  def change
+    add_index :ci_projects, :gitlab_id
+    add_index :ci_projects, :shared_runners_enabled
+
+    add_index :ci_builds, :type
+    add_index :ci_builds, :status
+  end
+end

db/migrate/20151016195706_add_notes_line_code_index.rb

+class AddNotesLineCodeIndex < ActiveRecord::Migration
+  def change
+    add_index :notes, :line_code
+  end
+end

db/schema.rb

@@ -11,7 +11,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
-ActiveRecord::Schema.define(version: 20151016131433) do
+ActiveRecord::Schema.define(version: 20151016195706) do
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -115,6 +115,8 @@ ActiveRecord::Schema.define(version: 20151016131433) do
   add_index "ci_builds", ["project_id", "commit_id"], name: "index_ci_builds_on_project_id_and_commit_id", using: :btree
   add_index "ci_builds", ["project_id"], name: "index_ci_builds_on_project_id", using: :btree
   add_index "ci_builds", ["runner_id"], name: "index_ci_builds_on_runner_id", using: :btree
+  add_index "ci_builds", ["status"], name: "index_ci_builds_on_status", using: :btree
+  add_index "ci_builds", ["type"], name: "index_ci_builds_on_type", using: :btree
   create_table "ci_commits", force: true do |t|
     t.integer  "project_id"
@@ -190,6 +192,9 @@ ActiveRecord::Schema.define(version: 20151016131433) do
     t.text     "generated_yaml_config"
   end
+  add_index "ci_projects", ["gitlab_id"], name: "index_ci_projects_on_gitlab_id", using: :btree
+  add_index "ci_projects", ["shared_runners_enabled"], name: "index_ci_projects_on_shared_runners_enabled", using: :btree
+
   create_table "ci_runner_projects", force: true do |t|
     t.integer  "runner_id",  null: false
     t.integer  "project_id", null: false
@@ -530,6 +535,7 @@ ActiveRecord::Schema.define(version: 20151016131433) do
   add_index "notes", ["commit_id"], name: "index_notes_on_commit_id", using: :btree
   add_index "notes", ["created_at", "id"], name: "index_notes_on_created_at_and_id", using: :btree
   add_index "notes", ["created_at"], name: "index_notes_on_created_at", using: :btree
+  add_index "notes", ["line_code"], name: "index_notes_on_line_code", using: :btree
   add_index "notes", ["noteable_id", "noteable_type"], name: "index_notes_on_noteable_id_and_noteable_type", using: :btree
   add_index "notes", ["noteable_type"], name: "index_notes_on_noteable_type", using: :btree
   add_index "notes", ["project_id", "noteable_type"], name: "index_notes_on_project_id_and_noteable_type", using: :btree