mysql的树形结构的删除节点的存储过程
CREATE PROCEDURE proc_delete_department(IN rootid int)
begin
declare _level int DEFAULT 0;
DROP TABLE IF EXISTS temptab;
create table temptab(id int, level int);
insert into temptab(id, level) values(rootid, _level);
REPEAT
insert into temptab(id, level)
select root.id, _level+1
from department root, temptab sub
where root.parentId= sub.id and sub.level = _level;
set _level = _level + 1;
until ROW_COUNT() = 0
end REPEAT;
delete from department whereid in (select id from temptab);
DROP TABLE IF EXISTS temptab;
end;
department 表 id 和 parentId
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