Loop Through Dates in SQL

DECLARE @StartDate DATE = '2019-12-17';
DECLARE @EndDate DATE = '2021-05-01'
declare @Edate date
declare @sdate date
set @Edate = DATEADD(day, 30, @StartDate)
set @sdate = @StartDate
WHILE (@Edate <= @EndDate)

BEGIN
print 'start'
print @sdate
print @Edate

set @sdate = @Edate
set @Edate = DATEADD(day, 30, @sdate);

print @sdate
print @Edate
print 'end'
END

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