Revert "remove n_tuples from MysqlRes, won't be set if using SQL_NO_CACHE"
Revert "remove n_tuples from MysqlRes, won't be set if using SQL_NO_CACHE"

This reverts commit 2701946ac90c1d4eff3abaa606dd3ae2bce2b570.

willbryant/kitchen_sync,willbryant/kitchen_sync,willbryant/kitchen_sync,willbryant/kitchen_sync,willbryant/kitchen_sync,willbryant/kitchen_sync