"UPDATE `ctracker_data` SET `script_name`=NULL WHERE `script_name`=''",
"ALTER TABLE `ctracker_data` CHANGE `server_name` `server_name` TINYTEXT CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL COMMENT 'Server''s host name'",
"UPDATE `ctracker_data` SET `server_name`=NULL WHERE `server_name`=''",
"UPDATE `ctracker_data` SET `script_name`=NULL WHERE `script_name`=''",
"ALTER TABLE `ctracker_data` CHANGE `server_name` `server_name` TINYTEXT CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL COMMENT 'Server''s host name'",
"UPDATE `ctracker_data` SET `server_name`=NULL WHERE `server_name`=''",