morningman commented on a change in pull request #1739: Added MIN/MAX aggregate
function compatible with char/varchar
URL: https://github.com/apache/incubator-doris/pull/1739#discussion_r320539275
##########
File path: be/src/olap/aggregate_func.h
##########
@@ -203,6 +203,36 @@ struct AggregateFuncTraits<OLAP_FIELD_AGGREGATION_MIN,
OLAP_FIELD_TYPE_LARGEINT>
}
};
+template <>
+struct AggregateFuncTraits<OLAP_FIELD_AGGREGATION_MIN,
OLAP_FIELD_TYPE_VARCHAR> :
+ public AggregateFuncTraits<OLAP_FIELD_AGGREGATION_NONE,
OLAP_FIELD_TYPE_VARCHAR> {
+ static void update(RowCursorCell* dst, const RowCursorCell& src, Arena*
arena) {
+ bool src_null = src.is_null();
Review comment:
Oh, I see~
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