如何使用前綴使MySQL表主鍵自動遞增我有這樣的桌子tableid Varchar(45) NOT NULL AUTO_INCREMENT PRIMARY KEY,name CHAR(30) NOT NULL,我想增加我的id字段，就像'LHPL001','LHPL002','LHPL003'..等等，我該怎么做？請告訴我任何可能的方法。
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ZEROFILLLPADCONCAT
create table so (
id int(3) unsigned zerofill not null auto_increment primary key,
name varchar(30) not null);insert into so set name = 'John';insert into so set name = 'Mark';select concat('LHPL', id) as id, name from so;+---------+------+| id | name |+---------+------+| LHPL001 | John || LHPL002 | Mark |+---------+------+create table so (
id int unsigned not null auto_increment primary key,
name varchar(30) not null);insert into so set name = 'John';insert into so set name = 'Mark';select concat('LHPL', LPAD(id, 3, 0)) as id, name from so;+---------+------+| id | name |+---------+------+| LHPL001 | John || LHPL002 | Mark |+---------+------+添加回答
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