snuyanzin commented on code in PR #27807:
URL: https://github.com/apache/flink/pull/27807#discussion_r2973736557
##########
flink-table/flink-table-api-java/src/main/java/org/apache/flink/table/operations/ddl/AlterTableChangeOperation.java:
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@@ -97,7 +97,9 @@ public static String toString(TableChange tableChange) {
return String.format(
" MODIFY %s COMMENT '%s'",
EncodingUtils.escapeIdentifier(modifyColumnComment.getNewColumn().getName()),
- modifyColumnComment.getNewComment());
+ modifyColumnComment.getNewComment() == null
+ ? ""
+ : modifyColumnComment.getNewComment());
Review Comment:
no, this type modification means it is removed
since there is no a dedicated table change for that
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