morningman commented on code in PR #24207:
URL: https://github.com/apache/doris/pull/24207#discussion_r1323907766
##########
be/src/vec/data_types/serde/data_type_nullable_serde.cpp:
##########
@@ -117,24 +119,25 @@ Status
DataTypeNullableSerDe::deserialize_column_from_hive_text_vector(IColumn&
}
Status DataTypeNullableSerDe::deserialize_one_cell_from_json(IColumn& column,
Slice& slice,
- const
FormatOptions& options) const {
+ const
FormatOptions& options,
+ int
nesting_level) const {
auto& null_column = assert_cast<ColumnNullable&>(column);
// TODO(Amory) make null literal configurable
if (!(options.converted_from_string && slice.trim_quote())) {
//for map<string,string> type : {"abc","NULL"} , the NULL is string ,
instead of null values
- if (slice.size == 4 && slice[0] == 'N' && slice[1] == 'U' && slice[2]
== 'L' &&
- slice[3] == 'L') {
+ if (nesting_level >= 2 && slice.size == 4 && slice[0] == 'n' &&
slice[1] == 'u' &&
Review Comment:
Add comment to describe the logic here. Better give some example
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