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create table tree_table 
(
id number,
pId number,
orderNumber number,
name varchar2(255)
)
select tt.*
from tree_table tt
start with tt.pId = 0
connect by prior tt.id = ttd.pId
order siblings by orderNumber 


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Oracle Approvals Management Actions

Actions
Every action belongs to an action type. An action type is a collection of actions having similar functionality. For example, actions in the absolute-job-level action type all require approvals up to a certain job level in the HR supervisory hierarchy.
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create user janely identified by wawa
default tablespace testSP--ĬÈϱí¿Õ¼äÊÇ system
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