DB pipes: warn about NULLs when using custom partition key

serprex · serprex · commit 793be14807d0 · 2025-09-04T03:03:06.000Z
diff --git a/docs/integrations/data-ingestion/clickpipes/mysql/parallel_initial_load.md b/docs/integrations/data-ingestion/clickpipes/mysql/parallel_initial_load.md
@@ -48,3 +48,4 @@ You can run **SHOW processlist** in MySQL to see the parallel snapshot in action
 ### Limitations {#limitations-parallel-mysql-snapshot}
 - The snapshot parameters cannot be edited after pipe creation. If you want to change them, you will have to create a new ClickPipe.
 - When adding tables to an existing ClickPipe, you cannot change the snapshot parameters. The ClickPipe will use the existing parameters for the new tables.
+- The partition key column should not contain `NULL`s, as they will be skipped by the partitioning logic.
diff --git a/docs/integrations/data-ingestion/clickpipes/postgres/parallel_initial_load.md b/docs/integrations/data-ingestion/clickpipes/postgres/parallel_initial_load.md
@@ -45,3 +45,4 @@ You can analyze **pg_stat_activity** to see the parallel snapshot in action. The
 
 - The snapshot parameters cannot be edited after pipe creation. If you want to change them, you will have to create a new ClickPipe.
 - When adding tables to an existing ClickPipe, you cannot change the snapshot parameters. The ClickPipe will use the existing parameters for the new tables.
+- The partition key column should not contain `NULL`s, as they will be skipped by the partitioning logic.

Original file line number	Diff line number	Diff line change
`@@ -45,3 +45,4 @@ You can analyze pg_stat_activity to see the parallel snapshot in action. The`
`45`	`45`
`46`	`46`	`- The snapshot parameters cannot be edited after pipe creation. If you want to change them, you will have to create a new ClickPipe.`
`47`	`47`	`- When adding tables to an existing ClickPipe, you cannot change the snapshot parameters. The ClickPipe will use the existing parameters for the new tables.`
	`48`	+- The partition key column should not contain `NULL`s, as they will be skipped by the partitioning logic.