add readme

risingwavelabs · Oct 25, 2023 · d9c0d0c · d9c0d0c
1 parent 434e69a
commit d9c0d0c
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/integration_tests/clickhouse-sink/README.md b/integration_tests/clickhouse-sink/README.md
@@ -23,6 +23,8 @@ docker compose exec clickhouse-server bash /opt/clickhouse/clickhouse-sql/run-sq
 - create_mv.sql
 - create_sink.sql
 
+We only support `upsert` with clickhouse' `CollapsingMergeTree` and `VersionedCollapsingMergeTree`
+
 4. Execute a simple query:
 
 ```sh