luozenglin commented on code in PR #18689:
URL: https://github.com/apache/doris/pull/18689#discussion_r1167891757
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be/src/vec/functions/function_bitmap.cpp:
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@@ -412,7 +412,7 @@ class FunctionBitmapCount : public IFunction {
auto data_null_map = ColumnUInt8::create(input_rows_count, 0);
auto& null_map = data_null_map->get_data();
- auto& column = block.get_by_position(arguments[0]).column;
Review Comment:
Because in row 418, the `column` may be assigned to a non-nullable column
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