mysql触发器之姓名转姓名拼音

人员表people 字段：id，peopleNumber,name,namePinyin,sex,birthday,nation。

namePinyin不用填写，根据name自动生成。

wordlib为字库表，内容为文字拼音对照

创建表

create table people(
id int auto_increment primary key,
peopleNumber varchar(18),
name varchar(20),
namePinyin varchar(50),
sex varchar(4),
birthday date,
nation varchar(30)
)character set utf8;

插入触发器

drop trigger if exists insert_pinyin;
delimiter //
create trigger insert_pinyin before insert on people
for each row
begin
    declare num int default 1;
    declare single_word varchar(2);
    declare single_py varchar(10);
    declare total_py varchar(50) default '';

    while num <= char_length(new.name) do
        set single_word = substr(new.name,num,1);
        select pinyin into single_py from wordlib where word = single_word;
        set total_py = concat(total_py,single_py);
        set num = num + 1;
    end while;
    set new.namePinyin = total_py;
end
//
delimiter ;

更新触发器

drop trigger if exists update_pinyin;
delimiter //
create trigger update_pinyin before update on people
for each row
begin
    declare num int default 1;
    declare single_word varchar(2);
    declare single_py varchar(10);
    declare total_py varchar(50) default '';

    while num <= char_length(new.name) do
        set single_word = substr(new.name,num,1);
        select pinyin into single_py from wordlib where word = single_word;
        set total_py = concat(total_py,single_py);
        set num = num + 1;
    end while;
    set new.namePinyin = total_py;
end
//
delimiter ;

insert into people (name,sex,peopleNumber,birthday,nation) values('张三','男','','','汉族')