wuchong 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_r335338458
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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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@@ -129,7 +133,7 @@ public boolean isIfNotExists() {
public void validate() throws SqlValidateException {
Set<String> columnNames = new HashSet<>();
- if (columnList != null) {
+ if (columnList.size() > 0) {
Review comment:
+1 to remove it. It is useless.
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