snuyanzin commented on code in PR #27199:
URL: https://github.com/apache/flink/pull/27199#discussion_r2532191817
##########
docs/content/docs/dev/table/materialized-table/statements.md:
##########
@@ -228,6 +228,30 @@ CREATE MATERIALIZED TABLE my_materialized_table
AS SELECT * FROM kafka_catalog.db1.kafka_table;
```
+## OR ALTER
+
+The `OR ALTER` clause provides create-or-update semantics:
+
+- **If the table does not exist**: Creates a new materialized table with the
specified options
+- **If the table exists**: Modifies the query definition (behaves like `ALTER
MATERIALIZED TABLE AS`)
Review Comment:
```suggestion
- **If the materialized table exists**: Modifies the query definition
(behaves like `ALTER MATERIALIZED TABLE AS`)
```
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