如何添加自动递增到php中另一列的主键值？

Question

I have a tree and I want to I have a table which has an id also, I want to use this id by adding to another column.

clearly, I want to add id column'value to parent_root column.

   sql = "INSERT INTO agac_menu (id,isim,aciklama,parent_id,parent_root,yetki,sira,tip,created)
        VALUES (NULL,'".$isim."','".$aciklama."','".$parent_id."','".$parent_root."','".$yetki."','".$sira."','".$tip."','".date('Y-m-d H:i:s')."')";

Answer 1

如果是MySQL（是的，我知道它更通用），则可以使用触发器： MySQL触发器last_insert_id（）

Answer 2

You can't do this in the same query--the auto incremented id doesn't exist until the record is inserted. After your query runs in php, grab the last insert id and run an update query.