1 files changed, 35 insertions, 0 deletions
diff --git a/db/migrate/20190910125852_create_analytics_language_trend_repository_languages.rb b/db/migrate/20190910125852_create_analytics_language_trend_repository_languages.rb
new file mode 100644
index 00000000000..07da4c20d55
--- /dev/null
+++ b/db/migrate/20190910125852_create_analytics_language_trend_repository_languages.rb
@@ -0,0 +1,35 @@
+# frozen_string_literal: true
+
+class CreateAnalyticsLanguageTrendRepositoryLanguages < ActiveRecord::Migration[5.2]
+  DOWNTIME = false
+  INDEX_PREFIX = 'analytics_repository_languages_'
+
+  def change
+    create_table :analytics_language_trend_repository_languages, id: false do |t|
+      t.integer :file_count, null: false, default: 0
+      t.references :programming_language, {
+        null: false,
+        foreign_key: { on_delete: :cascade },
+        index: false
+      }
+      t.references :project, {
+        null: false,
+        foreign_key: { on_delete: :cascade },
+        index: { name: INDEX_PREFIX + 'on_project_id' }
+      }
+      t.integer :loc, null: false, default: 0
+      t.integer :bytes, null: false, default: 0
+      # Storing percentage (with 2 decimal places), on 2 bytes.
+      # 50.25% => 5025
+      # Max: 100.00% => 10000 (fits smallint: 32767)
+      t.integer :percentage, limit: 2, null: false, default: 0
+      t.date :snapshot_date, null: false
+    end
+
+    add_index :analytics_language_trend_repository_languages, %I[
+      programming_language_id
+      project_id
+      snapshot_date
+    ], name: INDEX_PREFIX + 'unique_index', unique: true
+  end
+end