ZhangChaoming commented on a change in pull request #3823:
URL: https://github.com/apache/iceberg/pull/3823#discussion_r776985793
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File path: site/docs/flink.md
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@@ -301,7 +301,22 @@ Table create commands support the most commonly used
[flink create clauses](http
* `COMMENT 'table document'` to set a table description.
* `WITH ('key'='value', ...)` to set [table configuration](./configuration.md)
which will be stored in apache iceberg table properties.
-Currently, it does not support computed column, primary key and watermark
definition etc.
+Currently, it does not support computed column and watermark definition etc.
+
+### `PRIMARY KEY`
+
+To declare primary key(s) in a table, use `PRIMARY KEY ... NOT ENFORCED`:
+
+```sql
+CREATE TABLE `hive_catalog`.`default`.`sample` (
+ id BIGINT COMMENT 'unique id',
+ data STRING,
+ PRIMARY KEY (id) NOT ENFORCED
+);
+```
+
+Flink only support declare primary key(s) in not enforced mode.
+More information see in [flink create
clauses](https://ci.apache.org/projects/flink/flink-docs-release-1.11/dev/table/sql/create.html#create-table).
Review comment:
OK, I'll remove it.
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