1/準(zhǔn)備測(cè)試數(shù)據(jù)
---------------------------------------------------------------------------------
create table t1(
c1 integer,
c2 integer,
c3 integer
);
insert into t1 values(1,2,3)
insert into t1 values(1,8,4)
insert into t1 values(1,4,4)
insert into t1 values(1,4,5)
insert into t1 values(1,5,5)
insert into t1 values(2,2,3)
insert into t1 values(2,8,4)
insert into t1 values(2,4,4)
insert into t1 values(2,4,5)
insert into t1 values(2,5,5)
2/查看排名
---------------------------------------------------------------------------------
A/單記錄排名
select c1,c3,
(select count( c3)+1 from t1 a where a.c3>b.c3
and a.c1=b.c1 and a.c1 =1
) order_num
from t1 b
where c1 =1
order by c1,c3
c1 c3 order_num
----------- ----------- ----------------------
1 3 5
1 4 3
1 4 3
1 5 1
1 5 1
B/多記錄排名
select c1,c2,c3,
(select count( c3)+1 from t1 a where a.c3>b.c3
and a.c1=b.c1
) order_num
from t1 b
order by c1,c3
c1 c2 c3 order_num
----------- ----------- ----------- ----------------------
1 2 3 5
1 8 4 3
1 4 4 3
1 4 5 1
1 5 5 1
2 2 3 5
2 8 4 3
2 4 4 3
2 4 5 1
2 5 5 1
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