Add column 'sort_title' to titles, ids table

migration/sort_title.12.cr

@@ -0,0 +1,17 @@
+class SortTitle < MG::Base
+  def up : String
+    <<-SQL
+    -- add sort_title column to ids and titles
+    ALTER TABLE ids ADD COLUMN sort_title TEXT;
+    ALTER TABLE titles ADD COLUMN sort_title TEXT;
+    SQL
+  end
+
+  def down : String
+    <<-SQL
+    -- drop sort_title column to ids and titles
+    ALTER TABLE ids DROP COLUMN sort_title;
+    ALTER TABLE titles DROP COLUMN sort_title;
+    SQL
+  end
+end