sql查询数据排名的方法

      有时候我们在数据库的操作中需要查询某个范围的数据排行，那么应该怎么办呢？下面是爱站小编为大家总结出sql查询数据排名的方法，感兴趣的朋友们一起看看吧。

1/准备测试数据

---------------------------------------------------------------------------------
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

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A/单记录排名

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/多记录排名

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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