如何解决查找具有其他属性的最小最大?
假设我有桌子
Clickhouse中的select * from t where stringB in (select stringB from (select * from (select * from t where (stringB in (select stringB from t where oID = 1 and dID > 0 group by stringB having count(*) > 1) or
stringA in (select stringA from t where oID = 1 and dID > 0 group by stringA having count(*) > 1))
and dID in (select dID from t where oID = 1 and dID > 0 group by dID having count(*) > 1)) as foo) as bar where oID = 1 and dID > 0 group by stringB having count(*) > 1) or
stringA in (select stringA from (select * from (select * from t where (stringB in (select stringB from t where oID = 1 and dID > 0 group by stringB having count(*) > 1) or
stringA in (select stringA from t where oID = 1 and dID > 0 group by stringA having count(*) > 1))
and dID in (select dID from t where oID = 1 and dID > 0 group by dID having count(*) > 1)) as foo1) as bar1 where oID = 1 and dID > 0 group by stringA having count(*) > 1);
列。
如何找到time_created,view_type,view_id
分组的适当time_created
的最小和最大view_id
?
这是启动sql:
view_type
以及如何将select min(time_created) as min_time_created,max(time_created) as max_time_created,view_type from views
group by view_type;
添加到每个结果列。同样考虑到view_id
不是唯一的。
解决方法
该查询似乎可以帮助您
SELECT view_type,min(time_created) as min_time_created,max(time_created) as max_time_created
argMin(view_id,time_created) as min_view_id,argMax(view_id,time_created) as max_view_id
FROM views
GROUP BY view_type
,
尝试一下并使用窗口功能
using AutoMapper;
using Newtonsoft.Json;
using System;
using System.Collections.Generic;
public class WarehouseObj
{
public Warehouse[] Whs { get; set; }
public string Location { get; set; }
}
public class Warehouse
{
public string Id { get; set; }
public string Name { get; set; }
}
public class Wareh
{
public string wid { get; set; }
public string wname { get; set; }
}
public class Root
{
public List<Wareh> wareh { get; set; }
public string lc { get; set; }
}
public class Program
{
public static void Main()
{
var jsonString = @"{ 'wareh': [{
'wid': '1234','wname': 'W0986E'
},{
'wid': '1235','wname': 'E0948T'
}],'lc' : 'TTR0'}";
var config = new MapperConfiguration(cfg =>
{
cfg.CreateMap<Root,WarehouseObj>()
.ForMember(dest => dest.Whs,opts => opts.MapFrom(src => src.wareh))
.ForMember(dest => dest.Location,opts => opts.MapFrom(src => src.lc));
cfg.CreateMap<Wareh,Warehouse>()
.ForMember(dest => dest.Id,opts => opts.MapFrom(src => src.wid))
.ForMember(dest => dest.Name,opts => opts.MapFrom(src => src.wname));
});
IMapper mapper = config.CreateMapper();
var jArray = JsonConvert.DeserializeObject<Root>(jsonString);
var mapped = mapper.Map<WarehouseObj>(jArray);
Console.WriteLine("{0}-{1}",JsonConvert.SerializeObject(mapper.Map<WarehouseObj>(jArray).Whs),mapper.Map<WarehouseObj>(jArray).Location);
}
}
版权声明:本文内容由互联网用户自发贡献,该文观点与技术仅代表作者本人。本站仅提供信息存储空间服务,不拥有所有权,不承担相关法律责任。如发现本站有涉嫌侵权/违法违规的内容, 请发送邮件至 dio@foxmail.com 举报,一经查实,本站将立刻删除。