下列关于UPDATE语句的使用格式正确的是()
A、UPDATE table_name SET column=valuel,column2=value2 WHERE column3=value3;
B、UPDATE users1,users2 set age to 24 where name=123;
C、UPDATE mytable put 'ABC' to first_column where first_cloumn='mel';
D、UPDATE first_column='update' in table where secong_column='mel';