1 files changed, 21 insertions, 0 deletions
diff --git a/db/post_migrate/20220913082728_drop_index_cadence_create_iterations_automation.rb b/db/post_migrate/20220913082728_drop_index_cadence_create_iterations_automation.rb
new file mode 100644
index 00000000000..8b961bc1c7e
--- /dev/null
+++ b/db/post_migrate/20220913082728_drop_index_cadence_create_iterations_automation.rb
@@ -0,0 +1,21 @@
+# frozen_string_literal: true
+
+class DropIndexCadenceCreateIterationsAutomation < Gitlab::Database::Migration[2.0]
+  INDEX_NAME = 'cadence_create_iterations_automation'
+
+  disable_ddl_transaction!
+
+  def up
+    remove_concurrent_index_by_name :iterations_cadences, INDEX_NAME
+  end
+
+  def down
+    execute(
+      <<-SQL
+        CREATE INDEX CONCURRENTLY #{INDEX_NAME} ON iterations_cadences
+        USING BTREE(automatic, duration_in_weeks, (DATE ((COALESCE("iterations_cadences"."last_run_date", DATE('01-01-1970')) + "iterations_cadences"."duration_in_weeks" * INTERVAL '1 week')))) 
+        WHERE duration_in_weeks IS NOT NULL
+      SQL
+    )
+  end
+end