Làm sao tôi có thể lấy:
id slug id_slug
---------- ------------- --------------
1 xl 10
1 s 10
1 m 10
1 black 12
1 white 12
2 xl 10
2 l 10
2 blue 12
2 pink 12
đến
id return
1 1-xl-black
1 1-xl-white
1 1-s-black
1 1-s-white
1 1-m-black
1 1-m-white
2 2-xl-blue
2 2-xl-pink
2 2-l-blue
2 2-l-pink
