MXS-1196: Turn on Oracle compatibility

query_classifier/qc_mysqlembedded/qc_mysqlembedded.cc

@@ -2838,6 +2838,10 @@ int32_t qc_mysql_process_init(void)
 #endif
             MXS_NOTICE("Query classifier initialized.");
             inited = true;
+
+#if MYSQL_VERSION_MINOR >= 3
+            global_system_variables.sql_mode |= MODE_ORACLE;
+#endif
         }
     }