UPDATE table_name SET `field_name` = REPLACE(`field_name`, '<', '');
UPDATE table_name SET `field_name` = REPLACE(`field_name`, '>', '');
UPDATE table_name SET `field_name` = REPLACE(`field_name`, '"', '');
UPDATE table_name SET `field_name` = REPLACE(`field_name`, '%', '');
UPDATE table_name SET `field_name` = REPLACE(`field_name`, ';', '');
UPDATE table_name SET `field_name` = REPLACE(`field_name`, '(', '');
UPDATE table_name SET `field_name` = REPLACE(`field_name`, ')', '');
UPDATE table_name SET `field_name` = REPLACE(`field_name`, '\\', '');
UPDATE table_name SET `field_name` = REPLACE(`field_name`, '\'', '');
UPDATE table_name SET `field_name` = REPLACE(`field_name`, '&', 'AND');