mysql中当前日期的前一天后一天

SELECT CONCAT(CURRENT_DATE(),\' 00:00:00\');

SELECT CONCAT(CURRENT_DATE(),\' 23:59:59\');

SELECT DATE_SUB(\'2020-06-01\',INTERVAL 1 DAY);

SELECT DATE_ADD(\'2020-06-01\',INTERVAL -1 DAY);