SQL
ä»åãåå¿é²ã¬ãã«ã§ãã ä»äºã§ä½ææ¥ã®æã«ï¼ã足ãã15æ¥ãå¤ãå ¥ããã¨ããSQLæ¸ããªãã¨ãããªãã¦ããã ä½ææ¥ã6/2ã®ã¨ãã8/15ãããããã£ã¦æã§ãã update table1 t set t.delete_date=date_format(date_add(t.created_at, interval 2 month),'â¦
ããå¿ãã¡ããã®ã§ã update table1 inner join table2 on table1.column1 = table2.column2 set table1.column2 = table2.column2;