[GitHub] [flink-table-store] JingsongLi commented on a diff in pull request #98: [FLINK-26457] Introduce PartialUpdateMergeFunction

[GitBox <gi...@apache.org>]

JingsongLi commented on code in PR #98:
URL: https://github.com/apache/flink-table-store/pull/98#discussion_r855104891


##########
docs/content/docs/development/create-table.md:
##########
@@ -233,3 +233,37 @@ The two methods do not behave in the same way when querying.
 Use approach one if you have a large number of filtered queries
 with only `user_id`, and use approach two if you have a large
 number of filtered queries with only `catalog_id`.
+
+## Partial Update
+
+You can configure partial update from options:
+
+```sql
+CREATE TABLE MyTable (
+  product_id BIGINT,
+  price DOUBLE,
+  number BIGINT,
+  detail STRING,
+  PRIMARY KEY (product_id) NOT ENFORCED
+) WITH (
+  'merge-engine' = 'partial-update'
+);
+```
+
+{{< hint info >}}
+__Note:__ Partial update is only supported for table with primary key.
+{{< /hint >}}
+
+{{< hint info >}}
+__Note:__ Partial update is not supported for streaming consuming.

Review Comment:
   No, just streaming consuming.
   User can insert into it under streaming mode.



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