adonis0147 commented on code in PR #13428:
URL: https://github.com/apache/doris/pull/13428#discussion_r1000202738
##########
be/src/vec/data_types/data_type_array.cpp:
##########
@@ -210,13 +217,9 @@ Status DataTypeArray::from_string(ReadBuffer& rb, IColumn*
column) const {
// dispose the case of [123,,,]
if (nested_str_len == 0) {
- if (nested_column.is_nullable()) {
- auto& nested_null_col =
reinterpret_cast<ColumnNullable&>(nested_column);
- nested_null_col.get_nested_column().insert_default();
- nested_null_col.get_null_map_data().push_back(0);
- } else {
- nested_column.insert_default();
- }
+ auto& nested_null_col =
reinterpret_cast<ColumnNullable&>(nested_column);
+ nested_null_col.get_nested_column().insert_default();
+ nested_null_col.get_null_map_data().push_back(0);
Review Comment:
We should check whether the nested column is nullable here. In future, we
may enable the `not_null` syntax to create an array with the elements which are
all not nullable.
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