INSERT
INTO
Node
(Nod_nodecode,
Nod_parentcode,
Nod_nodetype,
Nod_nodeip,
Nod_nodename,
Nod_nodestate,
Nod_nodeport)
select
各个变量
from dual
where not exists( select * from node
where 关键条件 )
if not exists(select * from Node where Nod_nodecode = '')
用exists可以判断啊
采用 insert into select 判断.
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