插入时的MySQL slug函数

Question

我有一个带有slug字段的表.通过操纵另一个字段,可以通过函数自动填充此字段吗？

就像是:

INSERT INTO people('name','slug') VALUES ('xxxx',SLUG(name));

Answer 1

你在找这样的东西吗？

CREATE TABLE people
(`name` varchar(128), `slug` varchar(128));

-- It's not a real function it's just an oversimplified example
-- you need to implement your own logic     
CREATE FUNCTION NAME_SLUG(name VARCHAR(128))
RETURNS VARCHAR(128)
  RETURN LOWER(REPLACE(name, ' ', '-'));

CREATE TRIGGER tg_people_insert
BEFORE INSERT ON people
FOR EACH ROW
  SET NEW.slug = NAME_SLUG(NEW.name);

INSERT INTO people (`name`)
VALUES ('Jhon Doe'),('Ian Martin Louis'), ('Mark Lee');

SELECT * FROM people;

输出:

|             NAME |             SLUG |
---------------------------------------
|         Jhon Doe |         jhon-doe |
| Ian Martin Louis | ian-martin-louis |
|         Mark Lee |         mark-lee |

这是SQLFiddle演示