Error in executing UPDATE linktbl SET link_total = , link_clickedsince = , link_lastclicked='2019-05-26 15:28:45' WHERE link_id=39682error: 1064 You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ' link_clickedsince = , link_lastclicked='2019-05-26 15:28:45' WHERE link_id=' at line 1