如何检查每条路线的完整出行次数

Question

我的桌子每条路线有多个点。我想检索每条路线发生的完整旅行次数。标记1 - ＆gt; 5次一趟。

任何建议都将不胜感激。

Answer 1

如果旅程始终从标记1和步骤标记开始，但它可以在到达最终标记之前停止，您可以使用：

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如果旅行“触及”的标记完全是随机的，但您需要计算您拥有的标记数量，请使用此标记：

select routeid, count(marker) trip_n
from RouteTable 
where marker=5
group by routeid

Answer 2

select distinct m1.routeid, isnull(m2.[Trips],0)
from [TableName] m1
left join
(SELECT routeid, count(*) / 5 as [Trips]
  FROM [Tablename] m
  where 5 = (select count(distinct marker) 
  from [TableName]
  where routeid=m.routeid)
  group by routeid) m2
  on m1.routeid=m2.routeid

添加了[标记]表中的动态标记数：

select distinct m1.routeid, isnull(m2.[Trips],0)
from [TableName] m1
left join
(SELECT routeid, count(*) / 5 as [Trips]
  FROM [Tablename] m
  where (select [no_of_markers] from [Markers] where [route_id]=m.route_id) = (select count(distinct marker) 
  from [TableName]
  where routeid=m.routeid)
  group by routeid) m2
  on m1.routeid=m2.routeid