Question

尝试编写一个返回分页/排序结果的查询，该结果也在桶中进行分组，如下所示：

0-9999,10,000-99,999,10,000-999,999,1,000,000-49,999,999,50,000,000 +

每个人都应该有一个startIndex，当他们点击它时会跳转到哪里

以下是加载此数据的示例查询。用户可以在页面底部看到这些组，但它们取决于他们正在排序的列。单击其中一个组然后将用户跳转到该页面和索引。就我而言，还有更多列，但我认为分组归结为字符串，数字或日期时间。对于字符串，UI希望字母表中的每个字母都是一个组，但只有那些有数据的字母。对于其他一切，应该有大约5或6个桶。

有谁知道怎么做？甚至这叫什么？在网络上找不到任何东西，但我不确定该找什么。

declare @startIndex int
declare @pageSize int
declare @Names table
(
    FirstName varchar(100),
    LastName varchar(100),
    Age int,
    NetWorth money
)

select @startIndex = 1
select @pageSize = 10

insert into @Names (FirstName, LastName, Age, NetWorth) values ('John', 'Smith', 24, 304050)
insert into @Names (FirstName, LastName, Age, NetWorth) values ('John', 'Williams', 31, 430901)
insert into @Names (FirstName, LastName, Age, NetWorth) values ('Adam', 'Wilson', 29, 121000)
insert into @Names (FirstName, LastName, Age, NetWorth) values ('Jen', 'Phillips', 75, 1450000)
insert into @Names (FirstName, LastName, Age, NetWorth) values ('Tommy', 'John', 33, 99000)
insert into @Names (FirstName, LastName, Age, NetWorth) values ('Alex', 'Smith', 48, 12800000)
insert into @Names (FirstName, LastName, Age, NetWorth) values ('Dianne', 'Lane', 60, 94000000)
insert into @Names (FirstName, LastName, Age, NetWorth) values ('Charles', 'Barkley', 46, 21500000)
insert into @Names (FirstName, LastName, Age, NetWorth) values ('Will', 'Allen', 21, 4000)
insert into @Names (FirstName, LastName, Age, NetWorth) values ('Michael', 'Jordan', 50, 94500000)
insert into @Names (FirstName, LastName, Age, NetWorth) values ('Jenny', 'Block', 43, 509000)
insert into @Names (FirstName, LastName, Age, NetWorth) values ('Oprah', 'Winfrey', 61, 55000000)
insert into @Names (FirstName, LastName, Age, NetWorth) values ('Charles', 'Smith',50, 3400000)
insert into @Names (FirstName, LastName, Age, NetWorth) values ('LeBron', 'James', 29, 74678000)
insert into @Names (FirstName, LastName, Age, NetWorth) values ('Chris', 'Paul', 30, 19400000)
insert into @Names (FirstName, LastName, Age, NetWorth) values ('Kobe', 'Bryant', 38, 124600000)
insert into @Names (FirstName, LastName, Age, NetWorth) values ('Antonio', 'Gates', 36, 17040190)
insert into @Names (FirstName, LastName, Age, NetWorth) values ('Tony', 'Romo', 35, 28403400)
insert into @Names (FirstName, LastName, Age, NetWorth) values ('Nancy', 'Cammo', 44, 167880)
insert into @Names (FirstName, LastName, Age, NetWorth) values ('Bill', 'Brown', 45, 98000)
insert into @Names (FirstName, LastName, Age, NetWorth) values ('Paul', 'Jones', 26, 987900);

WITH SearchResults AS 
(
        SELECT 
            'RowNum' = ROW_NUMBER() over(ORDER BY NetWorth asc)
            ,Age
            ,NetWorth
            ,FirstName
            ,LastName
        FROM @Names
        group by Age, NetWorth, FirstName, LastName
),
counts as (
    select 'TotalRows' = count(*) from @Names
),
maxvalue as (
    select 'Val' = max(NetWorth) from @Names
)
SELECT  sr.RowNum
        ,sr.FirstName
        ,sr.LastName
        ,sr.Age
        ,sr.NetWorth
        ,'TotalRows' = c.TotalRows
        ,'MaxValue' = mv.Val
FROM    SearchResults sr
cross apply counts c
cross apply maxvalue mv
WHERE   sr.RowNum BETWEEN @startIndex AND @pageSize - @startIndex + 1

/*
select  NetWorth,
        count(NetWorth) 
from    @Names
group by NetWorth
order by NetWorth
*/

任何帮助都将不胜感激。

Answer 1

这是一次尝试，我没有sql-server（我假设您正在使用），因此您可能需要轻微调整查询：

select * from (
    select ROW_NUMBER() over(ORDER BY NetWorth asc) as rn
         , Age, NetWorth, FirstName, LastName
         , count(*) over () as totalrows
         , max(networth) over () as max_value
    from names
) as t 
where rn between 1 and 10;

如何编写也返回组存储桶的分页排序查询

1 个答案: