Merge pull request #7727 from taosdata/hotfix/TD-6477

[td-6477]fix data merge issue

src/tsdb/src/tsdbRead.c

@@ -930,7 +930,7 @@ static SMemRow getSMemRowInTableMem(STableCheckInfo* pCheckInfo, int32_t order,
         pCheckInfo->chosen = CHECKINFO_CHOSEN_IMEM;
         return rimem;
       } else {
-        pCheckInfo->chosen = CHECKINFO_CHOSEN_IMEM;
+        pCheckInfo->chosen = CHECKINFO_CHOSEN_MEM;
         return rmem;
       }
     }