eldenmoon commented on code in PR #54406:
URL: https://github.com/apache/doris/pull/54406#discussion_r2259520659
##########
fe/fe-core/src/main/java/org/apache/doris/catalog/Column.java:
##########
@@ -946,6 +946,18 @@ public void checkSchemaChangeAllowed(Column other) throws
DdlException {
if (generatedColumnInfo != null || other.getGeneratedColumnInfo() !=
null) {
throw new DdlException("Not supporting alter table modify
generated columns.");
}
+
+ if (type.isVariantType() && other.type.isVariantType()) {
+ if (this.getVariantMaxSubcolumnsCount() !=
other.getVariantMaxSubcolumnsCount()) {
Review Comment:
need test case
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