选择mysql中的所有父记录

Question

Table structure:

id(int)    title(varchar)                 parent(int)
1          Accessories                    0
2          Man                            1
3          Women                          1
4          Watches                        2
5          New Watches                    4
6          Used Watches                   5

Suppose If I am on a forth or fifth level children category, How to retrieve all its parent categories in a query. Basically I want to show breadcrumbs hierarchy.

Answer 1

You can try with:

select @start := id as 'id', title, parent
from table1
join 
(select @start := 0) temp
where parent = @start and id <= 4;

Note that without the id < 4 check, you'll get the full tree from the "top" ( 0 ) to the "bottom" ( 6 ).

Checkout the SQLFiddle , too.