From 3f9b1ecdb3bbaab6ec35d28d066759985ce25e0e Mon Sep 17 00:00:00 2001 From: Heinrich Lee Yu Date: Wed, 24 Jul 2019 22:36:39 +0800 Subject: Use SQL to find the gap instead of iterating Also removes unnecessary methods causing extra queries --- ...er_issues_project_id_relative_position_index.rb | 24 ++++++++++++++++++++++ db/schema.rb | 4 ++-- 2 files changed, 26 insertions(+), 2 deletions(-) create mode 100644 db/migrate/20190802012622_reorder_issues_project_id_relative_position_index.rb (limited to 'db') diff --git a/db/migrate/20190802012622_reorder_issues_project_id_relative_position_index.rb b/db/migrate/20190802012622_reorder_issues_project_id_relative_position_index.rb new file mode 100644 index 00000000000..12088dd763f --- /dev/null +++ b/db/migrate/20190802012622_reorder_issues_project_id_relative_position_index.rb @@ -0,0 +1,24 @@ +# frozen_string_literal: true + +class ReorderIssuesProjectIdRelativePositionIndex < ActiveRecord::Migration[5.2] + include Gitlab::Database::MigrationHelpers + + DOWNTIME = false + + disable_ddl_transaction! + + OLD_INDEX_NAME = 'index_issues_on_project_id_and_state_and_rel_position_and_id' + NEW_INDEX_NAME = 'index_issues_on_project_id_and_rel_position_and_state_and_id' + + def up + add_concurrent_index :issues, [:project_id, :relative_position, :state, :id], order: { id: :desc }, name: NEW_INDEX_NAME + + remove_concurrent_index_by_name :issues, OLD_INDEX_NAME + end + + def down + add_concurrent_index :issues, [:project_id, :state, :relative_position, :id], order: { id: :desc }, name: OLD_INDEX_NAME + + remove_concurrent_index_by_name :issues, NEW_INDEX_NAME + end +end diff --git a/db/schema.rb b/db/schema.rb index fe3fa597006..a9b7c1930e3 100644 --- a/db/schema.rb +++ b/db/schema.rb @@ -10,7 +10,7 @@ # # It's strongly recommended that you check this file into your version control system. -ActiveRecord::Schema.define(version: 2019_08_01_114109) do +ActiveRecord::Schema.define(version: 2019_08_02_012622) do # These are extensions that must be enabled in order to support this database enable_extension "pg_trgm" @@ -1716,7 +1716,7 @@ ActiveRecord::Schema.define(version: 2019_08_01_114109) do t.index ["project_id", "created_at", "id", "state"], name: "index_issues_on_project_id_and_created_at_and_id_and_state" t.index ["project_id", "due_date", "id", "state"], name: "idx_issues_on_project_id_and_due_date_and_id_and_state_partial", where: "(due_date IS NOT NULL)" t.index ["project_id", "iid"], name: "index_issues_on_project_id_and_iid", unique: true - t.index ["project_id", "state", "relative_position", "id"], name: "index_issues_on_project_id_and_state_and_rel_position_and_id", order: { id: :desc } + t.index ["project_id", "relative_position", "state", "id"], name: "index_issues_on_project_id_and_rel_position_and_state_and_id", order: { id: :desc } t.index ["project_id", "updated_at", "id", "state"], name: "index_issues_on_project_id_and_updated_at_and_id_and_state" t.index ["relative_position"], name: "index_issues_on_relative_position" t.index ["state"], name: "index_issues_on_state" -- cgit v1.2.3