Sql server 2000中的Row_Number模拟 [英] Row_Number simulation in Sql server 2000

问题描述

我有一个示例输入表

Declare  @input TABLE(Name VARCHAR(8))
INSERT INTO @input(Name)  values('Aryan') 
INSERT INTO @input(Name)  values('Aryan') 
INSERT INTO @input(Name)  values('Joseph') 
INSERT INTO @input(Name)  values('Vicky') 
INSERT INTO @input(Name)  values('Jaesmin') 
INSERT INTO @input(Name)  values('Aryan') 
INSERT INTO @input(Name)  values('Jaesmin') 
INSERT INTO @input(Name)  values('Vicky') 
INSERT INTO @input(Name)  values('Padukon') 
INSERT INTO @input(Name)  values('Aryan') 
INSERT INTO @input(Name)  values('Jaesmin') 
INSERT INTO @input(Name)  values('Vick') 
INSERT INTO @input(Name)  values('Padukon') 
INSERT INTO @input(Name)  values('Joseph') 
INSERT INTO @input(Name)  values('Marya') 
INSERT INTO @input(Name)  values('Vicky')

我还有一个理货表如下

declare @t table(n int)
insert into @t select 1 union all select 2 union all
select 3 union all select 4 union all select 5 union all
select 6 union all select 7 union all select 8 union all
select 9 union all select 10 union all select 11 union all
select 12 union all select 13 union all select 14 union all
select 15 union all select 16 union all select 17 union all
select 18 union all select 19 union all select 20

在 Sql Server 2005 中，如果我这样做

In Sql Server 2005 if I do as

 Select rn, name from (
    select ROW_NUMBER()over (order by Name) as rn , * from @input) x
    where rn % 2 <> 0

我得到的输出为

rn  name
1   Aryan
3   Aryan
5   Jaesmin
7   Jaesmin
9   Joseph
11  Padukon
13  Vick
15  Vicky

但我仅限于 Sql server 2000.我怎样才能得到相同的输出?

Bu I am restricted to Sql server 2000. How can I get the same output?

我试过

SELECT name, (SELECT COUNT(*) FROM @input AS i2 WHERE i2.Name <= i1.Name) As rn
FROM @input AS i1

但输出错误

name    rn
Aryan   4
Aryan   4
Joseph  9
Vicky   16
Jaesmin 7
Aryan   4
Jaesmin 7
Vicky   16
Padukon 12
Aryan   4
Jaesmin 7
Vick    13
Padukon 12
Joseph  9
Marya   10
Vicky   16

推荐答案

使用这个查询:

SELECT t1.name, t.n
FROM
(
    SELECT a.name, a.c, (SELECT COUNT(*) FROM @input AS i2 WHERE i2.Name <= a.Name) [rn]
    FROM
    (
        SELECT i.name, count(*) c
        FROM @input i
        GROUP BY i.name
    )a
)t1
JOIN @t t ON t.n <= t1.rn
WHERE t.n > t1.rn - t1.c 

它产生所需的输出:

name     n
-------- -----------
Aryan    1
Aryan    2
Aryan    3
Aryan    4
Jaesmin  5
Jaesmin  6
Jaesmin  7
Joseph   8
Joseph   9
Marya    10
Padukon  11
Padukon  12
Vick     13
Vicky    14
Vicky    15
Vicky    16

这篇关于Sql server 2000中的Row_Number模拟的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！