sql - Remove sequential dupelicates -


I have an event management system that enters rows in a DB by updating a record every time

A work may start - & gt; Edit - & gt; Approve - & gt; Decline - & gt; Edit - approval->

However, it can be updated some time by somebody, so there are several entries for a position such as

Start - & gt; Edit - & gt; Edit - & gt; Edit - & gt; Approve - & gt; Decline - & gt; Decline - & gt; Edit - approval->

I would like to remove squalidity duplicates, but if this situation is later, then

I 

  SELECT taskid, version, taskstats, ROW_NUMBER ()   
 Which product is  
  in sqtaskflow in sideways    > Id var status rank 16 1 qa full 1 16 2 qa full 2 ​​16 3 qa full 3 16 4 in line 16 5 in queue 2 16 6 in queue 3 16 7 q Full 4 16 8 QA Full 5 16 9 QA Full 6 16 10 Functions Completed 1   
 The desired output will be  
  id var status position 16 1 QA full 1 16 4 queue 1 16 7 QA Full 4 16 10 work complete 1    
 
 
 Assume that  version  is always sequential, no interval ...  
  SELECT taskid, repeats MIN (version) first_version, taskstatus, COUNT (*) (SELECT taskid, CAST (version AS INT) AS version, TaskSthis, ROW_NUMBER () o RA (tasked by tasked, order by function, cast (version as integer)) AS Task_Ordinal, ROW_NUMBER () Over (tasked by division, taskasat order or tasked, cast (version as int)) from workstation_status_ordinal to eskatsacflo ) AS Indexed Group By Tasked, TaskStatus, Task_Ordinal - Task_Status_Ordinal ORDER By Tasked, TaskStatus, Min (Version)   
 
  
 Example D Id  
  ID Vir Status Status Rank Rank 161 QA Full 1 0 16, QA Full, 0 16 2 QA Full 2 ​​0 16, QA Full, 0 16 3 QA Full 3 0 16, QA Full, 0 16 4 in line 1 3 16, in line, 3 16 5 queue 2 3 16, in line, 3 16 6 line 3 3 16, in line, 3 16 7 QA Full 4 3 16, QA Full, 3 16 8 QA Full 5 3 16, QA Full, 3 16 9 QA Full 6 3 16, QA Full, 3 16 10 Work Complete 1916, Work Completed, 9   
  Edit:

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