Select a random date within specific range

Question

How can I select a random date within a specific inclusive range, let's say '1950-01-01' and '1999-12-31' with SQL Server?

Answer 1

select DateAdd(d, ROUND(DateDiff(d, '1950-01-01', '1999-12-31') * RAND(), 0), '1950-01-01')

EDIT

If this is to be executed as part of a statement that returns multiple rows or as part of update, the RAND() would return single value for the whole resultset. For that case RAND(CHECKSUM(NEWID())) can be used.

select DateAdd(d, ROUND(DateDiff(d, '1950-01-01', '1999-12-31') * RAND(), 0), '1950-01-01'),
       DateAdd(d, ROUND(DateDiff(d, '1950-01-01', '1999-12-31') * RAND(CHECKSUM(NEWID())), 0), '1950-01-01')
from master..spt_values where type = 'P'