Merge pull request #210 from puzzle/fix/fix_join_tables

Add id primary key to order_team_members table

db/migrate/20240311175613_add_id_to_order_team_members.rb

@@ -0,0 +1,38 @@
+class AddIdToOrderTeamMembers < ActiveRecord::Migration[7.1]
+
+  def change
+      remove_index :order_team_members, column: :employee_id
+      remove_index :order_team_members, column: :order_id
+
+      reversible do |dir|
+        dir.up { deduplicate_entries }
+      end
+
+      add_column :order_team_members, :id, :primary_key
+      add_index :order_team_members, [:employee_id, :order_id], unique: true
+  end
+
+  private
+
+  def deduplicate_entries
+    execute <<~SQL
+      DELETE FROM "order_team_members"
+      WHERE "ctid" IN (
+        SELECT "ctid"
+        FROM (
+          SELECT
+            "ctid",
+            "employee_id",
+            "order_id",
+            row_number() OVER (
+              PARTITION BY "employee_id", "order_id"
+              ORDER BY "employee_id", "order_id"
+            ) AS "rnum"
+          FROM "order_team_members"
+        ) "t"
+        WHERE "t"."rnum" > 1
+      );
+    SQL
+  end
+
+end