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Declare @YourTable Table ([NAME] varchar(50),[STARTDATE] date,[ENDDATE] date) Insert Into @YourTable Values ('MIKE','2019-05-15','2019-05-16') ,('MIKE','2019-05-17','2019-05-18') ,('MIKE','2020-05-18','2020-05-19') ;with cte as ( Select A.[Name] ,B.D ,Grp = datediff(day,'1900-01-01',D) - row_number() over (partition by [Name] Order by D) From @YourTable A Cross Apply ( Select Top (DateDiff(DAY,StartDate,EndDate)+1) D=DateAdd(DAY,-1+Row_Number() Over (Order By (Select Null)),StartDate) From master..spt_values n1,master..spt_values n2 ) B ) Select [Name] ,StartDate= min(D) ,EndDate = max(D) From cte Group By [Name],Grp
Name
StartDate
EndDate
MIKE
2019-05-15
2019-05-18
MIKE
2020-05-18
2020-05-19