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yanhechao 2021-12-28 16:21:57

mysql 查看叶子节点

sql sql 
select
	dept_id,
	dept_name as name ,
	parent_id as pid,
	case
		when exists(
		select
			1
		from
			sys_dept t2
		where
			a.dept_id = t2.parent_id) then 0
		else 1
	end as leaf
from
	sys_dept a

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