[GitHub] [incubator-doris] chaoyli commented on a change in pull request #3424: allow delete duplicated non-key column using delete from

[GitBox <gi...@apache.org>]

chaoyli commented on a change in pull request #3424:
URL: https://github.com/apache/incubator-doris/pull/3424#discussion_r417936230



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File path: be/src/olap/rowset/segment_group.cpp
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@@ -697,6 +697,13 @@ const TabletSchema& SegmentGroup::get_tablet_schema() {
     return *_schema;
 }
 
+int SegmentGroup::get_num_zone_map_columns() {

Review comment:
       ZoneMap is not used for un-sorted column.
   Most of the time, you will have to filter the delete predicate row by row.




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