raminqaf commented on code in PR #28277:
URL: https://github.com/apache/flink/pull/28277#discussion_r3354269919
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flink-table/flink-sql-parser/src/main/java/org/apache/flink/sql/parser/ddl/materializedtable/SqlAlterMaterializedTableAsQuery.java:
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@@ -36,16 +38,35 @@ public class SqlAlterMaterializedTableAsQuery extends
SqlAlterMaterializedTable
private final SqlNode asQuery;
+ private final @Nullable SqlParserPos asKeywordPos;
Review Comment:
The `AS` keyword in alter is optional.
```sql
ALTER MATERIALIZED TABLE mt SUSPEND;
```
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