eldenmoon commented on code in PR #24554:
URL: https://github.com/apache/doris/pull/24554#discussion_r1378913453
##########
be/src/vec/columns/column_nullable.cpp:
##########
@@ -564,9 +564,7 @@ bool ColumnNullable::has_null(size_t size) const {
}
ColumnPtr make_nullable(const ColumnPtr& column, bool is_nullable) {
- if (is_column_nullable(*column)) {
- return column;
- }
+ if (is_column_nullable(*column) || !column->can_be_inside_nullable())
return column;
Review Comment:
!can_be_inside_nullable表明这个column一定不是nullable的。make_nullable只是调用了一下。这个一定得确保!can_be_inside_nullable是非nullable的函数，否则会挂
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