zhangstar333 commented on code in PR #17315:
URL: https://github.com/apache/doris/pull/17315#discussion_r1122561704
##########
be/src/vec/aggregate_functions/aggregate_function_window.h:
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@@ -274,6 +274,8 @@ struct LeadLagData {
const auto* nullable_column = assert_cast<const
ColumnNullable*>(column);
if (nullable_column->is_null_at(0)) {
_default_value.reset();
+ } else {
+
_default_value.set_value(nullable_column->get_nested_column_ptr(), 0);
Review Comment:
seems the default value must be const, so if it's nullable_column, the
default value must be NULL?
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