buptljy commented on a change in pull request #9843: [FLINK-14296] [Table SQL]
Use Optional for optional parameters in parser module
URL: https://github.com/apache/flink/pull/9843#discussion_r334327984
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File path:
flink-table/flink-sql-parser/src/main/java/org/apache/flink/sql/parser/ddl/SqlCreateTable.java
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@@ -57,12 +60,15 @@
private final SqlNodeList propertyList;
+ @Nullable
Review comment:
Thanks for pointing it out. I'm not sure about the use case =_= (Maybe
creating an empty table firstly and adding columns into it?). My motivation is
that we should make `primaryKeyList` and `uniqueKeysList`'s default value
consistent with other fields like `partitionKeyList`.
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