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A jack 2010-1-29
A K 2010-1-28
B mike 2010-1-27
B L 2010-1-26
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A jack 2010-1-29
B mike ¡¡2010-1-27
SQL code:
SELECT ²¿ÃÅ,ÐÕÃû, MAX(Èëְʱ¼ä) from test GROUP BY ²¿ÃÅ,ÐÕÃû
select * from test t
where not exists(
select 1 from test where ²¿ÃÅ=t.²¿ÃÅ and Èëְʱ¼ä>t.Èëְʱ¼ä)
SQL code:
select * from test where Èëְʱ¼ä in
(
select max(Èëְʱ¼ä) from test
)
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declare
TYPE test_rec IS record(
code varchar(10),
name varchar(30)
);
v_book test_rec;
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