Changed-lines coverage:
  PR changed C/C++ lines covered by tests: 98.04% (150/153)

Uncovered changed code (with context):

================================================================================
src/Processors/QueryPlan/ReadFromMergeTree.cpp
================================================================================

--- uncovered block 1453-1453 ---
     1451 | 
     1452 |     if (info.sum_marks == 0)
>>   1453 |         return {};
     1454 | 
     1455 |     /// PREWHERE actions can remove some input columns (which are needed only for prewhere condition).

--- uncovered block 1867-1867 ---
     1865 |     const size_t total_marks_to_read = parts_with_ranges.getMarksCountAllParts();
     1866 |     if (total_marks_to_read == 0)
>>   1867 |         return {};
     1868 | 
     1869 |     const auto & settings = context->getSettingsRef();

--- uncovered block 2011-2011 ---
     2009 | 
     2010 |             if (new_parts.empty())
>>   2011 |                 continue;
     2012 | 
     2013 |             /// Maximal number of streams could be very small compared to the number of parts. It gets even worse when we split those parts further.
WARNING: Failed to get start time for [Print Uncovered Code] - start time and duration won't be set

--- Coverage counts ---
Lines     : baseline 933,556/1,079,270  ->  current 933,813/1,079,325  (delta +257 / +55)
Functions : baseline 806,506/877,530  ->  current 806,434/877,531  (delta -72 / +1)
Branches  : baseline 305,606/388,362  ->  current 305,724/388,400  (delta +118 / +38)