xinyiZzz commented on code in PR #20635:
URL: https://github.com/apache/doris/pull/20635#discussion_r1223928589
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be/src/vec/functions/function_case.h:
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@@ -332,13 +332,15 @@ class FunctionCase : public IFunction {
bool then_null = false;
for (int i = 1 + has_case; i < arguments.size() - has_else; i += 2) {
auto then_column_ptr = block.get_by_position(arguments[i]).column;
- if (then_column_ptr->is_nullable() ||
then_column_ptr->only_null()) {
+ if (then_column_ptr->is_nullable() ||
Review Comment:
It seems to be ok, for `ColumnConst`, it seems that `get_data_type() ==
TypeIndex::Nullable` is the real `is_nullable`
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