Fix test

src/Storages/MergeTree/BoolMask.h

@@ -17,15 +17,16 @@ struct BoolMask
 
     bool operator==(const BoolMask & other) const { return can_be_true == other.can_be_true && can_be_false == other.can_be_false; }
 
-    /// Check if mask is no longer changeable under operation |.
+    /// Check if mask is no longer changeable under combine.
     /// We use this condition to early-exit KeyConditions::check{InRange,After} methods.
     bool isComplete(const BoolMask & initial_mask) const
     {
         if (initial_mask == consider_only_can_be_true)
             return can_be_true;
         else if (initial_mask == consider_only_can_be_false)
             return can_be_false;
-        return false;
+        else
+            return can_be_true && can_be_false;
     }
 
     /// Combine check result in different hyperrectangles.

tests/queries/0_stateless/01710_projection_pk_trivial_count.reference

@@ -1,7 +1,3 @@
-Expression ((Projection + Before ORDER BY))
-  AggregatingProjection
-    Expression (Before GROUP BY)
-      Filter (WHERE)
         ReadFromMergeTree (default.x)
     ReadFromPreparedSource (Optimized trivial count)
 5

tests/queries/0_stateless/01710_projection_pk_trivial_count.sql

@@ -2,7 +2,7 @@ drop table if exists x;
 
 create table x (i int) engine MergeTree order by i settings index_granularity = 3;
 insert into x select * from numbers(10);
-explain select count() from x where (i >= 3 and i <= 6) or i = 7;
+select * from (explain select count() from x where (i >= 3 and i <= 6) or i = 7) where explain like '%ReadFromPreparedSource%' or explain like '%ReadFromMergeTree%';
 select count() from x where (i >= 3 and i <= 6) or i = 7;
 
 drop table x;