diff --git a/docs/questions/sharing/visualizations/table.md b/docs/questions/sharing/visualizations/table.md
index 08849aabd38ed9e3fc11f0e1b5c77389cd2f88c4..dff29741b40ef88de678ba7cc4e6b48484ad48d8 100644
--- a/docs/questions/sharing/visualizations/table.md
+++ b/docs/questions/sharing/visualizations/table.md
@@ -72,6 +72,8 @@ Grab the domain or host from a URL or email. So if you have `https://www.example
 - Domain: `example`
 - Subdomain: `www`
 
+> Extracting domain and host from a URL or email is unavailable for MongoDB, SQLite, and SQL Server. For Druid, extracting domain and host is only available for the Druid-JDBC driver.
+
 ### Sum over time
 
 Add up all the values and group by a time period, generally by month.