oracle交集,并集,差集
[sql]
create
table
test1
(
name
varchar(10),
NN
varchar(10)
);
insert
into
test1 values("test","A");
insert
into
test1 values("test1","B");
insert
into
test1 values("test1","C");
insert
into
test1 values("test1","D");
insert
into
test1 values("test1","E");
create
table
test2
(
name
varchar(10),
NN
varchar(10)
);
insert
into
test2 values("test","A");
insert
into
test2 values("test2","B");
insert
into
test2 values("test2","C");
insert
into
test2 values
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