[pick](Variant) casting to decimal type may lost precision (#39843)

#39650
2024-08-23 22:47:32 +08:00
parent 37443aa7e1
commit 3103bb08dc
13 changed files with 56 additions and 39 deletions
--- a/be/src/olap/tablet_reader.cpp
+++ b/be/src/olap/tablet_reader.cpp
@ -272,7 +272,8 @@ TabletColumn TabletReader::materialize_column(const TabletColumn& orig) {
    }
    TabletColumn column_with_cast_type = orig;
    auto cast_type = _reader_context.target_cast_type_for_variants.at(orig.name());
-    column_with_cast_type.set_type(TabletColumn::get_field_type_by_type(cast_type));
+    FieldType filed_type = TabletColumn::get_field_type_by_type(cast_type.type);
+    column_with_cast_type.set_type(filed_type);
    return column_with_cast_type;
 }