1 files changed, 23 insertions, 0 deletions
diff --git a/db/post_migrate/20220128155814_fix_approval_rules_code_owners_rule_type_index.rb b/db/post_migrate/20220128155814_fix_approval_rules_code_owners_rule_type_index.rb
new file mode 100644
index 00000000000..eccfab25126
--- /dev/null
+++ b/db/post_migrate/20220128155814_fix_approval_rules_code_owners_rule_type_index.rb
@@ -0,0 +1,23 @@
+# frozen_string_literal: true
+
+class FixApprovalRulesCodeOwnersRuleTypeIndex < Gitlab::Database::Migration[1.0]
+  INDEX_NAME = 'index_approval_rules_code_owners_rule_type'
+  OLD_INDEX_NAME = 'index_approval_rules_code_owners_rule_type_old'
+  TABLE = :approval_merge_request_rules
+  COLUMN = :merge_request_id
+  WHERE_CONDITION = 'rule_type = 2'
+
+  disable_ddl_transaction!
+
+  def up
+    rename_index TABLE, INDEX_NAME, OLD_INDEX_NAME if index_exists_by_name?(TABLE, INDEX_NAME) && !index_exists_by_name?(TABLE, OLD_INDEX_NAME)
+
+    add_concurrent_index TABLE, COLUMN, where: WHERE_CONDITION, name: INDEX_NAME
+
+    remove_concurrent_index_by_name TABLE, OLD_INDEX_NAME
+  end
+
+  def down
+    # No-op
+  end
+end