Error in executing UPDATE linktbl SET link_total = , link_clickedsince = , link_lastclicked='2020-11-27 23:50:14' WHERE link_id=20406error: 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='2020-11-27 23:50:14' WHERE link_id=' at line 1