Merge pull request #7897 from ClickHouse/better-exception-messages

Slightly better usability of exception messages

dbms/src/Common/Exception.cpp

@@ -261,7 +261,7 @@ std::string getExceptionMessage(const Exception & e, bool with_stacktrace, bool
         stream << "Code: " << e.code() << ", e.displayText() = " << text;
 
         if (with_stacktrace && !has_embedded_stack_trace)
-            stream << ", Stack trace:\n\n" << e.getStackTrace().toString();
+            stream << ", Stack trace (when copying this message, always include the lines below):\n\n" << e.getStackTrace().toString();
     }
     catch (...) {}
 

dbms/src/Interpreters/executeQuery.cpp

@@ -143,7 +143,7 @@ static void logException(Context & context, QueryLogElement & elem)
     LOG_ERROR(&Logger::get("executeQuery"), elem.exception
         << " (from " << context.getClientInfo().current_address.toString() << ")"
         << " (in query: " << joinLines(elem.query) << ")"
-        << (!elem.stack_trace.empty() ? ", Stack trace:\n\n" + elem.stack_trace : ""));
+        << (!elem.stack_trace.empty() ? ", Stack trace (when copying this message, always include the lines below):\n\n" + elem.stack_trace : ""));
 }