From 4eb46cf8a0d74c7918c6efa713cf1ac502641425 Mon Sep 17 00:00:00 2001
From: Nawaz Dhandala <hello@nawazdhandala.com>
Date: Mon, 27 Oct 2025 13:46:24 +0000
Subject: [PATCH] docs(clickhouse): add SQL to calculate average uncompressed
 row size per table and close code fence

---
 HelmChart/Docs/Clickhouse.md | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/HelmChart/Docs/Clickhouse.md b/HelmChart/Docs/Clickhouse.md
index 800a113fdc..a81f075a89 100644
--- a/HelmChart/Docs/Clickhouse.md
+++ b/HelmChart/Docs/Clickhouse.md
@@ -66,4 +66,21 @@ ORDER BY elapsed DESC;
 
 ```sql
 KILL QUERY WHERE query_id = 'your_query_id';
+```
+
+
+#### Get size of avg row in bytes by table. 
+
+```
+SELECT
+  c.table,
+  sum(c.data_uncompressed_bytes) AS total_uncompressed_bytes,
+  t.total_rows,
+  sum(c.data_uncompressed_bytes) / t.total_rows AS avg_uncompressed_row_size_bytes
+FROM system.columns c
+JOIN system.tables t
+  ON c.database = t.database AND c.table = t.name
+WHERE c.database = 'oneuptime'
+GROUP BY c.table, t.total_rows
+ORDER BY avg_uncompressed_row_size_bytes DESC;
 ```
\ No newline at end of file