diff --git a/docs/libraries/workflow/USEFUL_QUERIES.md b/docs/libraries/workflow/USEFUL_QUERIES.md
new file mode 100644
index 0000000000..5579b9198f
--- /dev/null
+++ b/docs/libraries/workflow/USEFUL_QUERIES.md
@@ -0,0 +1,36 @@
+# Aggregate entire history
+
+```sql
+SELECT location, 'activity' AS t, activity_name AS name
+FROM db_workflow.workflow_activity_events
+WHERE
+	workflow_id = $1 AND NOT forgotten
+UNION ALL
+SELECT location, 'signal' AS t, signal_name AS name
+FROM db_workflow.workflow_signal_events
+WHERE
+	workflow_id = $1 AND NOT forgotten
+UNION ALL
+SELECT location, 'sub_workflow' AS t, sub_workflow_id::STRING AS name
+FROM db_workflow.workflow_sub_workflow_events
+WHERE
+	workflow_id = $1 AND NOT forgotten
+UNION ALL
+SELECT location, 'signal_send' AS t, signal_name AS name
+FROM db_workflow.workflow_signal_send_events
+WHERE
+	workflow_id = $1 AND NOT forgotten
+UNION ALL
+SELECT location, 'message_send' AS t, message_name AS name
+FROM db_workflow.workflow_message_send_events
+WHERE
+	workflow_id = $1 AND NOT forgotten
+UNION ALL
+SELECT location, 'loop' AS t, NULL AS name
+FROM db_workflow.workflow_loop_events
+WHERE
+	workflow_id = $1 AND NOT forgotten
+ORDER BY location ASC;
+```
+
+> Remove `AND NOT forgotten` to show all events, including past loop executions
diff --git a/lib/chirp-workflow/core/src/ctx/workflow.rs b/lib/chirp-workflow/core/src/ctx/workflow.rs
index 61907036b3..ae638f2036 100644
--- a/lib/chirp-workflow/core/src/ctx/workflow.rs
+++ b/lib/chirp-workflow/core/src/ctx/workflow.rs
@@ -54,10 +54,6 @@ pub struct WorkflowCtx {
 	conn: rivet_connection::Connection,
 
 	/// All events that have ever been recorded on this workflow.
-	///
-	/// If replaying, the workflow will check that the `ActivityId` is the same for all activities
-	/// to make sure the workflow hasn't diverged.
-	///
 	/// The reason this type is a hashmap is to allow querying by location.
 	event_history: Arc<HashMap<Location, Vec<Event>>>,
 	/// Input data passed to this workflow.
diff --git a/svc/pkg/cluster/standalone/datacenter-tls-renew/src/lib.rs b/svc/pkg/cluster/standalone/datacenter-tls-renew/src/lib.rs
index 80ea4d9d2f..407759e18c 100644
--- a/svc/pkg/cluster/standalone/datacenter-tls-renew/src/lib.rs
+++ b/svc/pkg/cluster/standalone/datacenter-tls-renew/src/lib.rs
@@ -23,7 +23,6 @@ pub async fn run_from_env(pools: rivet_pools::Pools) -> GlobalResult<()> {
 		"
 		UPDATE db_cluster.datacenter_tls
 		SET state2 = $3
-		FROM db_cluster.datacenter_tls
 		WHERE
 			state2 = $1 AND
 			expire_ts < $2