https://dev.mysql.com/doc/refman/5.7/en/update.html
UPDATE some_table SET field1='Value 1' WHERE primary_key = 7
UPDATE `Table A`,`Table B` SET `Table A`.`text`=concat_ws('',`Table A`.`text`,`Table B`.`B-num`," from ",`Table B`.`date`,'/')
UPDATE `table` SET `keywords` = concat_ws(', ',`keywords`,'main')