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ÎÊÌâÊÇÕâÑùµÄÎÒÏÖÔÚÓÐÁ½¸ö±í table_a ºÍ table_b, »¹ÓÐÒ»¸öÊÓͼ view_a, ±íºÍÊÓͼµÄ½á¹¹ÈçÏÂ
SQL code:
-- Create table
create table table_a
(
a number,
b varchar2(30),
c varchar2(30)
);
-- Create/Recreate primary, unique and foreign key constraints
alter table table_a
add constraint PK_table_a primary key (A);
===================================================================
-- Create table
create table table_b
(
a number,
b varchar2(30),
c varchar2(30)
);
-- Create/Recreate primary, unique and foreign key constraints
alter table table_b
add constraint PK_table_b primary key (A);
===================================================================
create view view_a as select * from table_b;
µ«ÎÒ¶Ô table_b ûÓÐÈκβÙ×÷ȨÏÞ£¬Ö»¶Ô table_a ºÍ view_a ÓвÙ×÷ȨÏÞ£¬ ÎÒÏÖÔÚҪʵÏֵŦÄÜÊÇ table_b ÖеÄÊý¾ÝÓб仯(inser, update, delete)ʱ£¬¾Í½« table_a ÖеļǼ¶ÔÓ¦¸üУ¬ ÓÚÊǽ¨Á¢ÁËÏÂÃæÕâ¸ö´¥·¢Æ÷£º
SQL code:
create or replace trigger trg_insurance
instead of update or insert or delete on view_a
begin
if inserting then
insert into table_a(a,b,c) values(:new.a,:new.b,:new.c);
elsif updating then
if (:new.b=1) then
insert into table_a(a,b,c) values(:new.a
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