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create table MAIN_NODE (
MLA_ID INTEGER not null , //½ÚµãID
MLA_ROOTID INTEGER, //¸ù½ÚµãID
MLA_PARENTID INTEGER, //¸¸½ÚµãID
MLA_NAME VARCHAR2(50), //½ÚµãÃû³Æ
constraint P_mlaid primary key (MLA_ID) );
MLA_ID MLA_PARENTID MLA_ROOTID MLA_NAME
1 0 0 ¸¸½Úµã1
2 1 0 £¨¸¸½Úµã1µÄ/£©×Ó½Úµã1
3 2 0 £¨¸¸½Úµã1µÄ/×Ó½Úµã1µÄ/£©Ëï×Ó½Úµã1
4 0 0  
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create [or replace] procedure <¹ý³ÌÃû>[(²ÎÊý)]
is|as
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begin
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create or replace trigger tri_update_emp_bak
after update
on emp_bak
for each row --ÿ¸üÐÂÒ»ÐÐ ¾Í´¥·¢Ò»´Î
begin
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